A neuronal correlate of spatial stability during periods of self-induced visual motion
A neuronal correlate of spatial stability during periods of self-induced visual motion
复制标题
自我诱导视觉运动期间空间稳定性的神经元相关性
DOI：
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复制
发表时间：
2004
影响因子：
2
通讯作者：
Peter Thier
中科院分区：
文献类型：
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作者：
R. G. Erickson;Peter Thier
背景视觉图像在缓慢跟踪眼球运动期间穿过视网膜的运动通常不是有意识地感知的，只要视网膜图像运动完全是由自愿的缓慢眼球运动引起的(否则，在追逐眼球运动期间，周围看起来会移动)。为了解决这种过滤可能发生在大脑的什么地方的问题，我们比较了当背景图像的视网膜图像运动是由物体运动引起的，而不是由追逐眼球运动引起的时，猕猴3个视觉皮质区域的细胞的反应。V4区和MT区几乎所有的细胞对来自任何来源的视网膜图像运动都有不分青红皂白的反应，但大多数记录在MST背侧区(MSTd)的细胞，以及少数记录在MST区外侧区(MST1)的细胞，优先对外部诱导的运动做出反应，对自身诱导的视觉运动反应很弱或根本不反应。这种细胞在低速自主眼球运动期间保持视觉空间的稳定性，并有助于提供一致的空间定向，无论眼睛是运动的还是静止的。
SummaryMotion of background visual images across the retina during slow tracking eye movements is usually not consciously perceived so long as the retinal image motion results entirely from the voluntary slow eye movement (otherwise the surround would appear to move during pursuit eye movements). To address the question of where in the brain such filtering might occur, the responses of cells in 3 visuo-cortical areas of macaque monkeys were compared when retinal image motion of background images was caused by object motion as opposed to a pursuit eye movement. While almost all cells in areas V4 and MT responded indiscriminately to retinal image motion arising from any source, most of those recorded in the dorsal zone of area MST (MSTd), as well as a smaller proportion in lateral MST (MST1), responded preferentially to externally-induced motion and only weakly or not at all to self-induced visual motion. Such cells preserve visuo-spatial stability during low-velocity voluntary eye movements and could contribute to the process of providing consistent spatial orientation regardless of whether the eyes are moving or stationary.