Department of Brain and Cognitive Sciences, McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec H3A2B4, Canada.
Rev Neurosci. 2020 Jul 28;31(5):505-520. doi: 10.1515/revneuro-2019-0097.
About 25 years ago, the discovery of receptive field (RF) remapping in the parietal cortex of nonhuman primates revealed that visual RFs, widely assumed to have a fixed retinotopic organization, can change position before every saccade. Measuring such changes can be deceptively difficult. As a result, studies that followed have generated a fascinating but somewhat confusing picture of the phenomenon. In this review, we describe how observations of RF remapping depend on the spatial and temporal sampling of visual RFs and saccade directions. Further, we summarize some of the theories of how remapping might occur in neural circuitry. Finally, based on neurophysiological and psychophysical observations, we discuss the ways in which remapping information might facilitate computations in downstream brain areas.
大约 25 年前，在非人类灵长类动物的顶叶皮层中发现了感受野（RF）重映射，这表明视觉 RF，广泛认为具有固定的视网膜组织，在每次眼跳前都可以改变位置。测量这种变化可能具有欺骗性的困难。因此，随后的研究产生了一个迷人但有些混乱的现象图景。在这篇综述中，我们描述了如何观察 RF 重映射取决于视觉 RF 和眼跳方向的空间和时间采样。此外，我们总结了一些关于重映射如何在神经回路中发生的理论。最后，根据神经生理学和心理物理学的观察，我们讨论了重映射信息如何促进下游脑区计算的方式。
