{"id":21355,"date":"2026-06-10T15:13:36","date_gmt":"2026-06-10T14:13:36","guid":{"rendered":"https:\/\/www.revue3emillenaire.com\/blog\/?p=21355"},"modified":"2026-06-10T15:13:36","modified_gmt":"2026-06-10T14:13:36","slug":"letonnant-fait-que-revelent-les-patients-au-cerveau-divise-par-denyse-oleary","status":"publish","type":"post","link":"https:\/\/www.revue3emillenaire.com\/blog\/letonnant-fait-que-revelent-les-patients-au-cerveau-divise-par-denyse-oleary\/","title":{"rendered":"L\u2019\u00e9tonnant fait que r\u00e9v\u00e8lent les patients au cerveau divis\u00e9 par Denyse O\u2019Leary"},"content":{"rendered":"<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>La perception (ce que nous captons du monde qui nous entoure) peut \u00eatre divis\u00e9e, mais la conception (les id\u00e9es) ne l\u2019est pas. Et personne n\u2019a deux esprits.<\/i><\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">En avril, <\/span><\/span><\/span><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>Popular Mechanics <\/i><\/span><\/span><\/span><\/em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">a publi\u00e9 un <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.popularmechanics.com\/science\/a71165853\/brain-science-soul-immortality\/\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">article<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> faisant r\u00e9f\u00e9rence \u00e0 <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.amazon.com\/Immortal-Mind-Neurosurgeons-Case-Existence\/dp\/1546006354\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>The Immortal Mind :<\/i><\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> (2025), un livre \u00e9crit par le neurochirurgien <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.stonybrook.edu\/experts\/profile\/michael-egnor\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Michael Egnor<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> et moi-m\u00eame. Le livre a \u00e9t\u00e9 qualifi\u00e9 de \u00ab <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">nuisible<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> \u00bb. Plus pr\u00e9cis\u00e9ment,<\/span><\/span><\/span><\/p>\n<p style=\"padding-left: 80px;\" align=\"justify\"><span style=\"color: #000000;\"><i><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Il est pr\u00e9judiciable de se pr\u00e9senter en disant\u00a0: \u00ab Je suis neurochirurgien, et voici comment fonctionne la science \u00bb, puis de s\u00e9lectionner <\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">arbitrairement<\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> ces exemples d\u00e9form\u00e9s qui peuvent donner aux gens l\u2019impression que quelque chose est vrai, alors que ce n\u2019est pas le cas.<\/span><\/span><\/i><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\">\u2014\u00a0<span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Le neurologue Steven Novella, cit\u00e9 dans Hanna Webster, \u00ab <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">This Neurosurgeon Studies the Brain Close to Death. He Believes the Soul Transcends the Body <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">(<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Ce neurochirurgien <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.popularmechanics.com\/science\/a71165853\/brain-science-soul-immortality\/\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">\u00e9tudie le cerveau<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> \u00e0 l\u2019approche de la mort. Il croit que l\u2019\u00e2me transcende le corps<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">)<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> \u00bb, <\/span><\/span><\/span><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>Popular Mechanics,<\/i><\/span><\/span><\/span><\/em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> 30\u00a0avril 2026<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">En r\u00e9alit\u00e9, la science est <\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">largement<\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> de notre c\u00f4t\u00e9 sur <\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">cette question<\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">, nous avons donc pens\u00e9 prendre un peu de temps pour l\u2019expliquer. Nous avons choisi un format de dialogue, dans lequel je pose les questions\u00a0:<\/span><\/span><\/span><\/p>\n<h2 align=\"justify\"><span style=\"color: #000000;\"><b><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Des opinions <\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">divis<\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">\u00e9es sur les cerveaux divis\u00e9s<\/span><\/span><\/b><\/span><\/h2>\n<p align=\"justify\"><img decoding=\"async\" src=\"https:\/\/mindmatters.ai\/wp-content\/uploads\/sites\/2\/2026\/05\/250px-RogerWolcottSperry.jpg\" \/><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"> <span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Roger Sperry<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Nous avons commenc\u00e9 par l\u2019un des sujets abord\u00e9s dans l\u2019article\u00a0: les personnes qui ont subi une division du cerveau en dernier recours pour traiter une \u00e9pilepsie r\u00e9fractaire.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Extrait de <\/span><\/span><\/span><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>Popular Mechanics :<\/i><\/span><\/span><\/span><\/em><\/p>\n<p style=\"padding-left: 80px;\" align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>Egnor ouvre son livre en \u00e9voquant les patients <\/i><\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>au<\/i><\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i> \u00ab cerveau divis\u00e9 \u00bb, chez qui <\/i><\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>une importante voie de<\/i><\/span><\/span><\/span><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>substanc<\/i><\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>e blanche reliant les deux h\u00e9misph\u00e8res, appel\u00e9 corps calleux, a \u00e9t\u00e9 sectionn\u00e9 afin de mettre fin \u00e0 une activit\u00e9 \u00e9pileptique invalidante. \u00ab <\/i><\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.popularmechanics.com\/science\/a71165853\/brain-science-soul-immortality\/\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>Studies the Brain<\/i><\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i> \u00bb<\/i><\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Diviser le cerveau humain en deux peut sembler radical, mais cela a permis d\u2019emp\u00eacher des crises d\u2019\u00e9pilepsie autrement incurables de se propager \u00e0 l\u2019ensemble du cerveau. <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.britannica.com\/biography\/Roger-Wolcott-Sperry\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Roger Sperry<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> (1913\u20131994) a re\u00e7u le prix Nobel pour avoir d\u00e9couvert les subtils handicaps dont souffraient les patients <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">au cerveau divis\u00e9<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">. Il a \u00e9tabli que les h\u00e9misph\u00e8res droit et gauche remplissaient des fonctions diff\u00e9rentes. Cependant, en <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">r\u00e8gle <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">g\u00e9n\u00e9ral, les patients m\u00e8nent une vie normale par la suite.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>O\u2019Leary\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">D\u2019accord, vous avez <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">d\u00e9j\u00e0 <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">d\u00fb diviser le cerveau d\u2019un homme\u2026<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>Egnor\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Dans l\u2019interview accord\u00e9e \u00e0 <\/span><\/span><\/span><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>Popular Mechanics, <\/i><\/span><\/span><\/span><\/em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">nous avons discut\u00e9 de la conclusion g\u00e9n\u00e9rale de Roger Sperry \u2014 qui est celle de toutes les personnes ayant travaill\u00e9 avec des patients <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">au cerveau divis\u00e9<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> \u2014 selon laquelle ces patients ne pr\u00e9sentent pratiquement aucun signe de division dans leur vie quotidienne. C\u2019est un fait, on le constate tout le temps.<\/span><\/span><\/span><\/p>\n<h2 align=\"justify\"><span style=\"color: #000000;\"><b><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Perception vs conception<\/span><\/span><\/b><\/span><\/h2>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>Egnor\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Ce qui est fascinant, c\u2019est la dichotomie entre la division assez radicale de<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">s<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> capacit\u00e9<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">s<\/span><\/span><\/span> <em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>de perception <\/i><\/span><\/span><\/span><\/em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">\u2014 la capacit\u00e9 de percevoir ou de remarquer des choses \u2014 et l\u2019absence presque totale de division de la capacit\u00e9 <\/span><\/span><\/span><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>conceptuelle <\/i><\/span><\/span><\/span><\/em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">\u2014 la capacit\u00e9 de r\u00e9fl\u00e9chir \u00e0 des concepts, des id\u00e9es.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Ce qui est \u00e9tonnant, et qui, je crois, a \u00e9t\u00e9 remarqu\u00e9 pour la premi\u00e8re fois par <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.researchgate.net\/scientific-contributions\/Justine-Sergent-72133868\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Justine Sergent<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">, puis approfondi par <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.bu.edu\/psych\/profile\/alice-cronin-golomb\/\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Alice Kronin-Golom<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> au MIT et <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/scholar.google.ca\/citations?user=E-fv1Y8AAAAJ\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Yair Pinto<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> aux Pays-Bas, c\u2019est que, malgr\u00e9 la division radicale de la perception, il n\u2019<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">existe<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> pratiquement aucune division conceptuelle \u2014 m\u00eame lorsque, \u00e0 toutes fins pratiques, aucune partie de leur cerveau n\u2019a acc\u00e8s \u00e0 l\u2019ensemble des informations dont le concept d\u00e9pend.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Autrement dit, les personnes peuvent toujours former des concepts entre les h\u00e9misph\u00e8res, m\u00eame si elles ne peuvent pas transf\u00e9rer de perceptions entre les h\u00e9misph\u00e8res.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>O\u2019Leary\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Il est donc clair que l\u2019esprit n\u2019est pas simplement ce que fait le cerveau, comme on l\u2019<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">affirm<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">e souvent.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">D\u2019accord, qu\u2019en est-il de l\u2019affirmation surprenante faite dans l\u2019article selon laquelle ces personnes auraient deux esprits ? \u00ab Bien que ces patients continuent <\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">\u00e0<\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> se reconna\u00eetre comme une seule entit\u00e9 apr\u00e8s l\u2019op\u00e9ration, ils ont bel et bien deux esprits, affirment d\u2019autres neuroscientifiques \u00bb. Honn\u00eatement, je ne comprends pas de quoi ces gens parlent.<\/span><\/span><\/span><\/p>\n<p style=\"padding-left: 80px;\" align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>Bien que ces patients <\/i><\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>continuent \u00e0 se reconna\u00eetre<\/i><\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i> comme une seule entit\u00e9 apr\u00e8s l\u2019op\u00e9ration, ils ont bel et bien deux esprits, affirment d\u2019autres neuroscientifiques. Lorsque les scientifiques pr\u00e9sentent une image \u00e0 l\u2019\u0153il gauche \u2014 trait\u00e9e par l\u2019h\u00e9misph\u00e8re droit \u2014, les patients ne peuvent pas expliquer pourquoi ils ont appuy\u00e9 sur le bouton correspondant \u00e0 une image associ\u00e9e \u00e0 celle-ci, car l\u2019h\u00e9misph\u00e8re droit n\u2019a pas de capacit\u00e9s linguistiques. Ils justifient plut\u00f4t le lien entre cette image et celle que l\u2019autre \u0153il a vue<\/i><\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">. \u00ab <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.popularmechanics.com\/science\/a71165853\/brain-science-soul-immortality\/\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Studies the<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> Brain \u00bb<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>Egnor\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Ce ne sont que des balivernes. Un certain nombre de scientifiques ont tent\u00e9 d\u2019avancer cette th\u00e8se, mais, honn\u00eatement, <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">aucune <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">personne qui r\u00e9fl\u00e9chit s\u00e9rieusement \u00e0 la question ne peut la soutenir.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Tout d\u2019abord, ils ne d\u00e9finissent pas ce qu\u2019ils entendent par \u00ab <\/span><\/span><\/span><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>esprits \u00bb. <\/i><\/span><\/span><\/span><\/em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Imaginons que je <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">sois en train de taper au clavier.<\/span><\/span><\/span> <span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">J<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">e ne s<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">u<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">is pas tr\u00e8s dou\u00e9 pour \u00e7a, je fais beaucoup de fautes. Je veux taper un A avec le petit doigt de ma main gauche, mais j\u2019appuie \u00e0 la place sur la touche S. \u00c7a m\u2019arrive assez souvent, en fait, alors je reviens en arri\u00e8re et je corrige.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Une partie de moi voulait taper un A. Mais une autre partie de moi a tap\u00e9 un S. Est-ce que cela signifie que j\u2019ai deux esprits ? Non. Cela signifie simplement que j\u2019ai <\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">commis<\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> une erreur.<\/span><\/span><\/span><\/p>\n<h2 align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Combien d\u2019esprits un cerveau peut-il g\u00e9rer ?<\/span><\/span><\/span><\/h2>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>O\u2019Leary\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Eh bien, que pensez-vous de <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">ceci<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> ? Un <\/span><\/span><\/span><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>troisi\u00e8me <\/i><\/span><\/span><\/span><\/em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">esprit a reconnu l\u2019erreur !<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>Egnor\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Eh bien, oui, c\u2019est vrai, sauf qu\u2019il n\u2019y a pas de troisi\u00e8me esprit, ce qui signifie que\u2026<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>O\u2019Leary\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Attendez une minute, comment <\/span><\/span><\/span><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>le savons-nous ?<\/i><\/span><\/span><\/span><\/em><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>Egnor :<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Exactement. Et on peut pousser le raisonnement encore plus loin et dire qu\u2019un quatri\u00e8me esprit reconna\u00eet que le troisi\u00e8me esprit reconna\u00eet qu\u2019une erreur a \u00e9t\u00e9 commise. On <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">aboutit alors<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> \u00e0 un<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">e<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> infini<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">t\u00e9<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> d\u2019esprits.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>O\u2019Leary\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Bien s\u00fbr. Peut-\u00eatre qu\u2019\u00e0 chaque fois que vous faites une erreur, un autre esprit se scinde\u2026 Tout comme l\u2019univers d\u2019Everett.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>Egnor\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Il existe un livre formidable de <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.sydney.edu.au\/research\/opportunities\/supervisors\/1534\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Maxwell Bennett<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> et <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.pmshacker.co.uk\/\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">P. M. S.\u00a0Hacker<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> intitul\u00e9 <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.amazon.com\/Philosophical-Foundations-Neuroscience-M-Bennett\/dp\/140510838X\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>The Philosophical Basis of Neuroscience<\/i><\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> (2003)<\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/www.amazon.com\/Philosophical-Foundations-Neuroscience-M-Bennett\/dp\/140510838X\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>,<\/i><\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> dans lequel ils abordent ce genre de sujet de mani\u00e8re tr\u00e8s d\u00e9taill\u00e9e. Ils y consacrent un chapitre relativement court \u00e0 la chirurgie du cerveau divis\u00e9. Et ils soulignent que le fonctionnement humain normal implique l\u2019int\u00e9gration d\u2019une multitude de perceptions et de conceptions diff\u00e9rentes.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Et m\u00eame dans la vie de tous les jours, nous ne sommes pas parfaitement int\u00e9gr\u00e9s. Nous commettons des erreurs. Nous avons des lapsus freudiens, nous tapons la mauvaise lettre\u2026 Vous voyez, l\u2019int\u00e9gration est un projet en cours chez <\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">tout<\/span><\/span><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> \u00eatre humain.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i><b>O\u2019Leary\u00a0:<\/b><\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Donc, pour r\u00e9sumer, la pens\u00e9e conceptuelle \u2014 les id\u00e9es \u2014 n\u2019est pas divis\u00e9e par la division du cerveau.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><em><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"><i>\u00c0 suivre :<\/i><\/span><\/span><\/span><\/em><i> <\/i><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Les personnes <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">au<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> cerveau divis\u00e9 disposent-elles de <\/span><\/span><\/span><span style=\"color: #000080;\"><a href=\"https:\/\/mindmatters.ai\/2026\/05\/do-people-with-split-brains-have-back-door-communications\/\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">m\u00e9thodes<\/span><\/span><\/span><\/a><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> de communication <\/span><\/span><\/span><span style=\"color: #000080;\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">discr\u00e8tes<\/span><\/span><\/span><\/span> <span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">et m\u00e9<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">connues ?<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">Texte original publi\u00e9 le <\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">20\u00a0<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">mai<\/span><\/span><\/span><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\"> 2026\u00a0: <\/span><\/span><\/span><span style=\"color: #000080;\"><u><a href=\"https:\/\/mindmatters.ai\/2026\/05\/the-astonishing-fact-that-split-brain-patients-reveal\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #000000;\"><span style=\"font-family: Times New Roman, serif;\"><span style=\"font-size: medium;\">https:\/\/mindmatters.ai\/2026\/05\/the-astonishing-fact-that-split-brain-patients-reveal\/<\/span><\/span><\/span><\/a><\/u><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Diviser le cerveau humain en deux peut sembler radical, mais cela a permis d\u2019emp\u00eacher des crises d\u2019\u00e9pilepsie autrement incurables de se propager \u00e0 l\u2019ensemble du cerveau. Roger Sperry (1913\u20131994) a re\u00e7u le prix Nobel pour avoir d\u00e9couvert les subtils handicaps dont souffraient les patients au cerveau divis\u00e9. Il a \u00e9tabli que les h\u00e9misph\u00e8res droit et gauche remplissaient des fonctions diff\u00e9rentes. Cependant, en r\u00e8gle g\u00e9n\u00e9ral, les patients m\u00e8nent une vie normale par la suite. Ce qui est \u00e9tonnant, c\u2019est que, malgr\u00e9 la division radicale de la perception, il n\u2019existe pratiquement aucune division conceptuelle \u2014 m\u00eame lorsque, \u00e0 toutes fins pratiques, aucune partie de leur cerveau n\u2019a acc\u00e8s \u00e0 l\u2019ensemble des informations dont le concept d\u00e9pend.<\/p>\n","protected":false},"author":2,"featured_media":20738,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2205],"tags":[116,512,2374],"class_list":["post-21355","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oleary-denyse","tag-cerveau","tag-esprit","tag-hemispheres-cerebraux"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>L\u2019\u00e9tonnant fait que r\u00e9v\u00e8lent les patients au cerveau divis\u00e9 par Denyse O\u2019Leary - 3e mill\u00e9naire - Spiritualit\u00e9 - Connaissance de soi - Non-dualit\u00e9 - M\u00e9ditation<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.revue3emillenaire.com\/blog\/letonnant-fait-que-revelent-les-patients-au-cerveau-divise-par-denyse-oleary\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u2019\u00e9tonnant fait que r\u00e9v\u00e8lent les patients au cerveau divis\u00e9 par Denyse O\u2019Leary - 3e mill\u00e9naire - Spiritualit\u00e9 - Connaissance de soi - Non-dualit\u00e9 - M\u00e9ditation\" \/>\n<meta property=\"og:description\" content=\"Diviser le cerveau humain en deux peut sembler radical, mais cela a permis d\u2019emp\u00eacher des crises d\u2019\u00e9pilepsie autrement incurables de se propager \u00e0 l\u2019ensemble du cerveau. Roger Sperry (1913\u20131994) a re\u00e7u le prix Nobel pour avoir d\u00e9couvert les subtils handicaps dont souffraient les patients au cerveau divis\u00e9. Il a \u00e9tabli que les h\u00e9misph\u00e8res droit et gauche remplissaient des fonctions diff\u00e9rentes. Cependant, en r\u00e8gle g\u00e9n\u00e9ral, les patients m\u00e8nent une vie normale par la suite. Ce qui est \u00e9tonnant, c\u2019est que, malgr\u00e9 la division radicale de la perception, il n\u2019existe pratiquement aucune division conceptuelle \u2014 m\u00eame lorsque, \u00e0 toutes fins pratiques, aucune partie de leur cerveau n\u2019a acc\u00e8s \u00e0 l\u2019ensemble des informations dont le concept d\u00e9pend.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.revue3emillenaire.com\/blog\/letonnant-fait-que-revelent-les-patients-au-cerveau-divise-par-denyse-oleary\/\" \/>\n<meta property=\"og:site_name\" content=\"3e mill\u00e9naire - Spiritualit\u00e9 - Connaissance de soi - Non-dualit\u00e9 - M\u00e9ditation\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-10T14:13:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.revue3emillenaire.com\/blog\/wp-content\/uploads\/2025\/08\/Denyse-OLeary.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"319\" \/>\n\t<meta property=\"og:image:height\" content=\"346\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"3e mill\u00e9naire\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"3e mill\u00e9naire\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.revue3emillenaire.com\\\/blog\\\/letonnant-fait-que-revelent-les-patients-au-cerveau-divise-par-denyse-oleary\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.revue3emillenaire.com\\\/blog\\\/letonnant-fait-que-revelent-les-patients-au-cerveau-divise-par-denyse-oleary\\\/\"},\"author\":{\"name\":\"3e mill\u00e9naire\",\"@id\":\"https:\\\/\\\/www.revue3emillenaire.com\\\/blog\\\/#\\\/schema\\\/person\\\/b692dacff720a5344a6190bc714397eb\"},\"headline\":\"L\u2019\u00e9tonnant fait que r\u00e9v\u00e8lent les patients au cerveau divis\u00e9 par Denyse O\u2019Leary\",\"datePublished\":\"2026-06-10T14:13:36+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.revue3emillenaire.com\\\/blog\\\/letonnant-fait-que-revelent-les-patients-au-cerveau-divise-par-denyse-oleary\\\/\"},\"wordCount\":1241,\"image\":{\"@id\":\"https:\\\/\\\/www.revue3emillenaire.com\\\/blog\\\/letonnant-fait-que-revelent-les-patients-au-cerveau-divise-par-denyse-oleary\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.revue3emillenaire.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/Denyse-OLeary.jpg\",\"keywords\":[\"cerveau\",\"esprit\",\"h\u00e9misph\u00e8res c\u00e9r\u00e9braux\"],\"articleSection\":[\"O\u2019Leary Denyse\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.revue3emillenaire.com\\\/blog\\\/letonnant-fait-que-revelent-les-patients-au-cerveau-divise-par-denyse-oleary\\\/\",\"url\":\"https:\\\/\\\/www.revue3emillenaire.com\\\/blog\\\/letonnant-fait-que-revelent-les-patients-au-cerveau-divise-par-denyse-oleary\\\/\",\"name\":\"L\u2019\u00e9tonnant fait que r\u00e9v\u00e8lent les patients au cerveau divis\u00e9 par Denyse O\u2019Leary - 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