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Sensorimotor Mismatch Signals in Primary Visual Cortex of the Behaving Mouse

机译：行为小鼠的初级视觉皮层中的Sensorimotor不匹配信号

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Studies in anesthetized animals have suggested that activity in early visual cortex is mainly driven by visual input and is well described by a feedforward processing hierarchy. However, evidence from experiments on awake animals has shown that both eye movements and behavioral state can strongly modulate responses of neurons in visual cortex; the functional significance of this modulation, however, remains elusive. Using visual-flow feedback manipulations during locomotion in a virtual reality environment, we found that responses in layer 2/3 of mouse primary visual cortex are strongly driven by locomotion and by mismatch between actual and expected visual feedback. These data suggest that processing in visual cortex may be based on predictive coding strategies that use motor-related and visual input to detect mismatches between predicted and actual visual feedback. Keller et al. measure activity in primary visual cortex of behaving mice. They find that locomotion and mismatch between actual and expected visual feedback, and not visual input as such, are the main determinants of neural activity.
机译：对麻醉动物的研究表明，早期视觉皮层的活动主要由视觉输入驱动，并由前馈处理层次很好地描述。然而，来自清醒动物实验的证据表明，眼球运动和行为状态都可以强烈调节视觉皮层中神经元的反应。但是，这种调制的功能意义仍然难以捉摸。在虚拟现实环境中的移动过程中使用视觉流反馈操作，我们发现鼠标主要视觉皮层的第2/3层中的响应受运动以及实际和预期视觉反馈之间的不匹配的强烈驱动。这些数据表明，视觉皮层中的处理可能基于使用运动相关和视觉输入来检测预测视觉反馈与实际视觉反馈之间的不匹配的预测编码策略。凯勒等。测量行为小鼠初级视觉皮层的活性。他们发现实际和预期的视觉反馈之间的运动和不匹配，而不是视觉输入本身，是神经活动的主要决定因素。

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