Task-specific recruitment of dorsal and ventral visual areas during tactile perception
Task-specific recruitment of dorsal and ventral visual areas during tactile perception
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DOI：
10.1016/j.neuropsychologia.2003.12.013
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发表时间：
2004-01-01
期刊：
影响因子：
2.6
通讯作者：
Sathian, K
中科院分区：
文献类型：
--
作者：
Prather, SC;Votaw, JR;Sathian, K
许多研究发现，视觉圆锥区域在触觉感知过程中是活跃的。在这里，我们对正常视力的人类使用正电子发射断层扫描（PET）扫描，以表明在二维变化的触觉刺激的感知处理过程中，纹状外皮层区域以特定于任务的方式被招募。触觉形式的心理旋转激活了左顶内沟前盘周围的焦点。由于先前的研究报告了视觉刺激的心理旋转期间附近的活动，因此该焦点似乎与背侧视觉（视觉空间）通路相关。触觉形式之间的辨别激活了右侧枕叶复合体，这是腹侧视觉（视觉形式）通路中的一个物体选择区域。因此，触觉任务似乎会招募在相应视觉任务期间活跃的皮质区域。在视觉和触觉任务中这些区域的激活可以反映触觉感知期间的视觉图像、多感官表征的活动或两者。 (C) 2004 Elsevier Ltd. 保留所有权利。
Many studies have found that visual conical areas are active during tactile perception. Here we used positron emission tomographic (PET) scanning in normally sighted humans to show that extrastriate cortical regions are recruited in a task-specific manner during perceptual processing of tactile stimuli varying in two dimensions. Mental rotation of tactile Forms activated a focus around the anterior pan of the left intraparietal sulcus. Since prior studies have reported activity nearby during mental rotation of visual stimuli, this focus appears to be associated with the dorsal visual (visuospatial) pathway. Discrimination between tactile Forms activated the right lateral occipital complex, an object-selective region in the ventral visual (visual Form) pathway. Thus, tactile tasks appear to recruit cortical regions that are active during corresponding visual tasks. Activation of these areas in both visual and tactile tasks could reflect visual imagery during tactile perception, activity in multisensory representations, or both. (C) 2004 Elsevier Ltd. All rights reserved.