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Common and segregated processing of observed actions in human SPL.
Abdollahi, Rouhollah O; Jastorff, Jan; Orban, Guy A.
Afiliação
  • Abdollahi RO; Laboratorium voor Neuro-en Psychofysiologie, KU Leuven Medical School, Leuven, Belgium and.
Cereb Cortex ; 23(11): 2734-53, 2013 Nov.
Article em En | MEDLINE | ID: mdl-22918981
To clarify the functional organization of parietal cortex involved in action observation, we scanned subjects observing 3 widely different classes of actions: Manipulation with the hands, locomotion, and climbing. An effector-based organization predicts that parietal regions involved in the observation of climbing should not differ from those involved in observing manipulation and locomotion, opposite to the prediction of an organization based upon the action performed. Compared with individual controls, the observation of climbing evoked activity in dorsal superior parietal lobule (SPL), extending into precuneus and posterior cingulate sulcus. Observation of locomotion differentially activated similar regions less strongly. Observation of manipulation activated ventro-rostral SPL, including putative human AIP (phAIP). Using interaction testing and exclusive masking to directly compare the parietal regions involved in observing the 3 action classes, relative to the controls, revealed that the rostral part of dorsal SPL was specifically involved in observing climbing and phAIP in observing manipulation. Parietal regions common to observing all 3 action classes were restricted and likely reflected higher order visual processing of body posture and 3D structure from motion. These results support a functional organization of some parietal regions involved in action observation according to the type of action in the case of climbing and manipulation.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Lobo Parietal / Desempenho Psicomotor / Percepção Visual Limite: Adult / Female / Humans / Male Idioma: En Ano de publicação: 2013 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Lobo Parietal / Desempenho Psicomotor / Percepção Visual Limite: Adult / Female / Humans / Male Idioma: En Ano de publicação: 2013 Tipo de documento: Article