UCL Institute of Ophthalmology, University College London, London, United Kingdom.
CoMPLEX, Department of Computer Science, University College London, London, United Kingdom.
Elife. 2021 Feb 4;10:e63705. doi: 10.7554/eLife.63705.
During navigation, the visual responses of neurons in mouse primary visual cortex (V1) are modulated by the animal's spatial position. Here we show that this spatial modulation is similarly present across multiple higher visual areas but negligible in the main thalamic pathway into V1. Similar to hippocampus, spatial modulation in visual cortex strengthens with experience and with active behavior. Active navigation in a familiar environment, therefore, enhances the spatial modulation of visual signals starting in the cortex.
在导航过程中,小鼠初级视觉皮层(V1)中的神经元的视觉反应会受到动物空间位置的调制。在这里,我们表明这种空间调制在多个更高的视觉区域中同样存在,但在进入 V1 的主要丘脑通路上则可以忽略不计。与海马体类似,视觉皮层中的空间调制会随着经验和主动行为而增强。因此,在熟悉的环境中主动导航会增强从皮层开始的视觉信号的空间调制。