Functional coupling between frontoparietal and occipitotemporal pathways during action and perception
Functional coupling between frontoparietal and occipitotemporal pathways during action and perception
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DOI：
10.1016/j.cortex.2016.10.020
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发表时间：
2018-01-01
期刊：
影响因子：
3.6
通讯作者：
Gallivan, Jason P.
中科院分区：
文献类型：
--
作者：
Hutchison, R. Matthew;Gallivan, Jason P.
一些证据表明，枕颞通路中的区域在视觉感知和物体识别过程中至关重要。然而，很少有人认识到，这条通路在与物体相关的处理过程中所起的作用是为了视觉引导的行动。在这里，使用功能磁共振成像（fMRI）和功能连接（FC）的措施，我们研究了在额顶叶皮层（FPC）参与抓握，达到，眼球运动，和工具使用和区域之间的相互作用在枕颞叶皮层（OTC）参与对象，面部，场景，身体，工具，和运动相关的处理，无论是在感觉运动和视觉感知任务的性能，以及在被动固定（静止状态）期间。聚类分析的区域时程数据确定对应的FPC和OTC连接的模式在视觉感知任务和休息，都倾向于隔离区域沿着传统的背侧/腹侧通路边界。然而，在感觉运动任务中，我们观察到一个显着的分离，在功能耦合之间的腹内侧和腹外侧区域的OTC，与几个后者的领域往往被聚集在一起的感觉运动定义的区域在顶叶皮层。这些研究结果表明，腹外侧OTC领域的功能耦合背顶叶和腹内侧结构是灵活的和任务依赖性的，并建议在外侧枕叶皮层，特别是区域，可能发挥重要作用，在涉及感觉运动控制任务的背侧和腹侧通路之间的相互作用进行调解。(C)2016爱思唯尔有限公司版权所有
Several lines of evidence point to areas in the occipitotemporal pathway as being critical in the processes of visual perception and object recognition. Much less appreciated, however, is the role that this pathway plays in object-related processing for the purposes of visually guided action. Here, using functional MRI (fMRI) and functional connectivity (FC) measures, we examined interactions between areas in frontoparietal cortex (FPC) involved in grasping, reaching, eye movements, and tool use and areas in occipitotemporal cortex (OTC) involved in object-, face-, scene-, body-, tool-, and motion-related processing, both during the performance of sensorimotor and visual-perceptual tasks, as well as during passive fixation (resting-state). Cluster analysis of regional time course data identified correspondence in the patterns of FPC and OTC connectivity during the visual-perceptual tasks and rest that both tended to segregate regions along traditional dorsal/ventral pathway boundaries. During the sensorimotor tasks, however, we observed a notable separation in functional coupling between ventral-medial and ventral-lateral regions of OTC, with several of the latter areas often being clustered together with sensorimotor-defined areas in parietal cortex. These findings indicate that the functional coupling of ventral-lateral OTC areas to dorsal parietal and ventral-medial structures is flexible and task-dependent, and suggests that regions in lateral occipital cortex, in particular, may play an important role in mediating interactions between the dorsal and ventral pathways during tasks involving sensorimotor control. (C) 2016 Elsevier Ltd. All rights reserved.