Kawashima R, Naitoh E, Matsumura M, Itoh H, Ono S, Satoh K, Gotoh R, Koyama M, Inoue K, Yoshioka S, Fukuda H
Department of Nuclear Medicine and Radiology, IDAC, Tohoku University, Sendai, Japan.
Neuroreport. 1996 May 17;7(7):1253-6. doi: 10.1097/00001756-199605170-00006.
Regional cerebral blood flow was measured by positron emission tomography in seven subjects during reaching with saccade, reaching without saccade, saccade and control tasks. The reaching with saccade task activated two spatially distinct areas in the contralateral intraparietal sulcus (IPS) compared with the control condition. The area located in the anterior part of the IPS was also activated during the reaching without saccade but not during the saccade task. The other area, located in the posterior part of the IPS was, in contrast, active during the saccade but not the reaching without saccade task. The results indicate that the human IPS is functionally heterogeneous, and that functional roles of its anterior and posterior parts include control of reaching movements and eye movements, respectively.
通过正电子发射断层扫描技术，在七名受试者执行扫视时伸手、无扫视伸手、扫视及对照任务期间测量了局部脑血流量。与对照条件相比，扫视时伸手任务激活了对侧顶内沟（IPS）中两个空间上不同的区域。位于IPS前部的区域在无扫视伸手时也被激活，但在扫视任务期间未被激活。相比之下，位于IPS后部的另一个区域在扫视时活跃，但在无扫视伸手任务期间不活跃。结果表明，人类的IPS在功能上是异质的，其前部和后部的功能作用分别包括对伸手运动和眼球运动的控制。
