Somatosensory areas in man activated by moving stimuli:: cytoarchitectonic mapping and PET
Somatosensory areas in man activated by moving stimuli:: cytoarchitectonic mapping and PET
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DOI：
10.1097/00001756-200001170-00037
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发表时间：
2000-01-17
期刊：
影响因子：
1.7
通讯作者：
Roland, PE
中科院分区：
文献类型：
--
作者：
Bodegård, A;Geyer, S;Roland, PE
这项研究的目的是确定体感区域中参与辨别皮肤上移动刺激的神经元群。使用正电子发射断层扫描 (PET) 测量局部脑血流量 (rCBF) 的变化，并将其与细胞结构感觉运动区域 4a、4p、3a、3b 和 I 相关联。志愿者区分旋转刷刺激手掌表面的速度差异。与休息相比，对移动刺激的辨别主要增加了初级体感 (SI) I 区的 rCBF，但也增加了 3b 区的 rCBF。双侧顶叶盖（PO）被激活。我们得出的结论是，I 区是 SI 中主要响应运动刺激辨别的区域，而 PO 包含几个参与快速瞬态刺激辨别的区域。 NeuroReport 11:187-191 (C) 2000 Lippincott Williams & Wilkins。
This study was performed to identify neuronal populations in the somatosensory areas engaged in discrimination of moving stimuli on the skin. Changes in regional cerebral blood flow (rCBF) were measured with positron emission tomography (PET) and correlated with cytoarchitectonic sensorimotor areas 4a, 4p, 3a, 3b, and I. Volunteers discriminated differences in the speed of a rotating brush stimulating the palmar surface. Discrimination of moving stimuli, contrasted to rest, increased the rCBF mainly in primary somatosensory (SI) area I, but also in area 3b. The parietal operculum (PO) was activated bilaterally. We conclude that area I is the area in SI which is mainly responding to discrimination of moving stimuli and that the PO contains several regions engaged in the discrimination of fast transient stimuli. NeuroReport 11:187-191 (C) 2000 Lippincott Williams & Wilkins.