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Is it mine? Hemispheric asymmetries in corporeal self recognition| old_uid | 3078 |
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| title | Is it mine? Hemispheric asymmetries in corporeal self recognition |
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| start_date | 2007/06/21 |
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| schedule | 11h30 |
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| online | no |
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| summary | The aim of the studies I will present is to investigate whether the recognition of “self body-parts” is independent from the recognition of other people's body–parts. If this is the case, the ability to recognize “self body-parts” should be selectively impaired after lesions involving specific brain areas. To verify this hypothesis, patients with a lesion of the right (RBD) or the left (LBD) hemisphere and healthy subjects, were submitted to a visual matching-to-sample task, in which stimuli depicting their own body-parts or other people’s body-parts were presented. The results showed that the task indirectly tapped into bodily self processing mechanisms, in that both LBD patients and controls performed better the task when they visually matched their own, as compared to others’, body-parts. In contrast, RBD patients did not show such an advantage for self body-parts. These findings suggest that the right hemisphere may be involved in the recognition of self body-parts, through a fronto-parietal network. Using a similar procedure, a second single case study investigates whether the recognition of “corporal-self” is a modular function and, as a consequence, whether the ability to recognize “self body-parts” and “self-face-parts” could be selectively impaired, after brain lesion. This patient was impaired compared to controls in “self body-parts” recognition but not in “others’ body-parts” recognition. However, he was impaired compared to controls in “others’ face-parts” but not in “self-face” parts recognition. This pattern of results was not present in a control right brain damaged patient. The anatomic correlates of these deficit will also be discussed. |
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| responsibles | Farnè |
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