Adaptive weighting of binocular correlation and matching computation in stereopsis

立体系统加权基于相关和匹配的视差表示以支持双目深度的感知。我们发现，精细深度感知主要使用基于匹配的表示，而粗糙深度感知结合了两者。大脑还利用基于相关性的表示来快速刷新刺激，而基于匹配的表示用于缓慢变化或静止的刺激。猕猴的单单位记录和微刺激实验表明，视觉V4区的神经元活动直接支持精细的深度判断。我们还开发了将双光子激光成像应用于猕猴视觉V4区的技术，这将使我们能够揭示该区域的立体视觉功能结构。

Stereoscopic system weights correlation- and match-based disparity representations to support perception of binocular depth. We found that fine depth perception mainly uses the match-based representation, while coarse depth perception combines both. The brain also exploits correlation-based representation for rapidly refreshed stimuli, whereas match-based representation is used for slowly changing or stationary stimuli. Single-unit recording and micro-stimulation experiments in macaque monkeys show that neuronal activity in visual area V4 directly underlie fine depth judgement.We also developed techniques to apply 2-photon laser imaging to visual area V4 in monkeys, which will allow us to reveal the functional architecture of this area for stereopsis.