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首页> 外文期刊>Neuron >MT neurons combine visual motion with a smooth eye movement signal to code depth-sign from motion parallax.
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MT neurons combine visual motion with a smooth eye movement signal to code depth-sign from motion parallax.

机译:MT神经元将视觉运动与平滑的眼动信号相结合,以编码运动视差的深度信号。

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摘要

The capacity to perceive depth is critical for an observer to interact with his or her surroundings. During observer movement, information about depth can be extracted from the resulting patterns of image motion on the retina (motion parallax). Without extraretinal signals related to observer movement, however, depth-sign (near versus far) from motion parallax can be ambiguous. We previously demonstrated that MT neurons combine visual motion with extraretinal signals to code depth-sign from motion parallax in the absence of other depth cues. In that study, head translations were always accompanied by compensatory tracking eye movements, allowing at least two potential sources of extraretinal input. We now show that smooth eye movement signals provide the critical extraretinal input to MT neurons for computing depth-sign from motion parallax. Our findings demonstrate a powerful modulation of MT activity by eye movements, as predicted by human studies of depth perception from motion parallax.
机译:感知深度的能力对于观察者与其周围环境进行交互至关重要。在观察者移动期间,可以从在视网膜上产生的图像运动模式(运动视差)中提取有关深度的信息。但是,如果没有与观察者移动相关的视网膜外信号,则距运动视差的深度信号(近距离或远距离)可能会模棱两可。我们以前证明了MT神经元将视觉运动与视网膜外信号结合起来,以在没有其他深度提示的情况下编码运动视差的深度信号。在该研究中,头部平移总是伴随着补偿性跟踪眼动,从而至少有两个潜在的视网膜外输入源。我们现在显示,平滑的眼球运动信号为MT神经元提供了关键的视网膜外输入,以计算运动视差的深度信号。正如人类对运动视差的深度感知研究所预测的那样,我们的发现证明了眼动对MT活动的强大调节。

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