Motion perception is facilitated by the interplay of various sensory channels. In rodents, the cortical areas involved in multisensory motion coding remain to be identified. Using voltage-sensitive-dye imaging, we revealed a visuo–tactile convergent region that anatomically corresponds to the associative parietal cortex (APC). Single unit responses to moving visual gratings or whiskers deflections revealed a specific coding of motion characteristics strikingly found in both sensory modalities. The heteromodality of this region was further supported by a large proportion of bimodal neurons and by a classification procedure revealing that APC carries information about motion features, sensory origin and multisensory direction-congruency. Altogether, the results point to a central role of APC in multisensory integration for motion perception.

中文翻译：

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大鼠联想顶叶皮层多感觉运动特征的神经元编码。

各种感觉通道的相互作用促进了运动感知。在啮齿动物中，参与多感觉运动编码的皮层区域仍有待确定。使用电压敏感染料成像，我们揭示了在解剖学上对应于关联顶叶皮层 (APC) 的视觉-触觉会聚区域。对移动视觉光栅或晶须偏转的单个单元响应揭示了在两种感觉方式中都惊人地发现的运动特征的特定编码。该区域的异质性得到了大量双峰神经元和分类程序的进一步支持，该程序揭示了 APC 携带有关运动特征、感觉起源和多感觉方向一致性的信息。总而言之，结果表明 APC 在运动感知的多感官整合中发挥着核心作用。