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Areas activated during naturalistic reading comprehension overlap topological visual auditory and somatotomotor maps

机译:在自然主义阅读理解过程中激活的区域与拓扑视觉听觉和躯体运动图重叠

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摘要

Cortical mapping techniques using fMRI have been instrumental in identifying the boundaries of topological (neighbor‐preserving) maps in early sensory areas. The presence of topological maps beyond early sensory areas raises the possibility that they might play a significant role in other cognitive systems, and that topological mapping might help to delineate areas involved in higher cognitive processes. In this study, we combine surface‐based visual, auditory, and somatomotor mapping methods with a naturalistic reading comprehension task in the same group of subjects to provide a qualitative and quantitative assessment of the cortical overlap between sensory‐motor maps in all major sensory modalities, and reading processing regions. Our results suggest that cortical activation during naturalistic reading comprehension overlaps more extensively with topological sensory‐motor maps than has been heretofore appreciated. Reading activation in regions adjacent to occipital lobe and inferior parietal lobe almost completely overlaps visual maps, whereas a significant portion of frontal activation for reading in dorsolateral and ventral prefrontal cortex overlaps both visual and auditory maps. Even classical language regions in superior temporal cortex are partially overlapped by topological visual and auditory maps. By contrast, the main overlap with somatomotor maps is restricted to a small region on the anterior bank of the central sulcus near the border between the face and hand representations of M‐I. Hum Brain Mapp 37:2784–2810, 2016. © >2016 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc.
机译:使用fMRI的皮质测图技术在识别早期感官区域的拓扑图(邻居保留图)的边界方面发挥了作用。早期感官区域之外的拓扑图的存在增加了它们可能在其他认知系统中起重要作用的可能性,并且拓扑图可能有助于勾画涉及更高认知过程的区域。在这项研究中,我们将基于表面的视觉,听觉和躯体运动测绘方法与自然阅读理解任务结合在一起,以对所有主要的感觉方式中的感觉运动图之间的皮层重叠进行定性和定量评估,并读取处理区域。我们的研究结果表明,在自然主义阅读理解过程中,皮质激活与拓扑感觉运动图谱的重叠程度要比迄今为止所认识到的更为广泛。与枕叶和顶下叶相邻的区域中的阅读激活几乎完全与视觉图重叠,而在背外侧和腹前额叶皮层中阅读的额叶激活的很大一部分与视觉图和听觉图都重叠。甚至颞上皮质的古典语言区域也被拓扑视觉和听觉图部分重叠。相比之下,与体动图的主要重叠仅限于中央沟的前岸一小部分区域,靠近M-1的面部和手部代表之间的边界。嗡嗡声大脑映射37:2784–2810,2016。©> 2016 The Authors Human Brain Mapping由Wiley Periodicals,Inc 出版。

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