Department of Neurobiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Jules Stein Eye Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
J Vis. 2020 Sep 2;20(9):6. doi: 10.1167/jov.20.9.6.
Remapping is a property of some cortical and subcortical neurons that update their responses around the time of an eye movement to account for the shift of stimuli on the retina due to the saccade. Physiologically, remapping is traditionally tested by briefly presenting a single stimulus around the time of the saccade and looking at the onset of the response and the locations in space to which the neuron is responsive. Here we suggest that a better way to understand the functional role of remapping is to look at the time at which the neural signal emerges when saccades are made across a stable scene. Based on data obtained using this approach, we suggest that remapping in the lateral intraparietal area is sufficient to play a role in maintaining visual stability across saccades, whereas in the frontal eye field, remapped activity carries information that affects future saccadic choices and, in a separate subset of neurons, is used to maintain a map of locations in the scene that have been previously fixated.
重映射是一些皮质和皮质下神经元的特性，它们在眼球运动时更新其反应，以解释由于扫视导致视网膜上刺激物的转移。从生理学上讲，重映射通常通过在扫视时短暂呈现单个刺激，并观察反应的起始和神经元响应的空间位置来进行测试。在这里，我们建议理解重映射功能作用的更好方法是观察在跨越稳定场景进行扫视时神经信号出现的时间。基于使用这种方法获得的数据，我们认为顶内沟外侧区的重映射足以在扫视过程中维持视觉稳定性，而在额眼区，重映射的活动携带影响未来扫视选择的信息，并且在一个单独的神经元子集，用于维持先前注视的场景位置的地图。
