オブジェクト表象に関わる脳活動は遮蔽時間に伴って変化するか(第23回大会優秀発表賞抄録)

概要

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In a previous study we have shown, by using functional MRI during a multiple object permanence tracking (MOPT) task, that the representation of dynamic objects needs the cooperation of widespread neural systems (Imaruoka, Saiki, Miyauchi; 2005). In the present study we modified the MOPT task, and measured the brain activity during the task with fMRI, so that we could explore the precise correspondence of a number of cognitive processes and neural systems related to the representation of dynamic objects. The cognitive processes included object tracking, the maintenance of visual information, the integration of visual spatial information, and other information about an object. The neural systems included the anterior, superior, and inferior frontal areas, and the parietal area. The results suggested a close relationship between: (a) the right superior frontal gyrus and the maintenance of a coherency of the dynamic objects; and (b) the parietal regions and the tracking of the visual objects.
2005-09-30