ФМРТ-реакции мозга при выполнении активных и пассивных движений у леворуких испытуемых
Hemodynamic brain reactions (functional magnetic resonance imaging (fMRI), 3T) during active and passive movements by dominant and non-dominant hands were investigated in 15 left-handed healthy volunteers. Group and individual fMRI-reactions were analyzed during various movement performances. It was found that the main cluster of activation was localized in pre- and postcentral areas of the contralateral hemisphere and was topographically similar during active and passive movements performed by the dominant and non-dominant hand. A larger cluster activation and larger diffuseness were observed during movements of the non-dominant hand as compared with those of the dominant one. Smaller volumes of clusters were observed during passive movements compared with those during active movements; this difference is more noticeable in the non-dominant hand movements. It probably indicates that the cortical control is weaker during passive hand movements. Keywords: left-handedness, fMRI, active and passive movements, dominant and not-dominant hand.