Neural correlates of fine depth discrimination in monkey inferior temporal cortex
Neural correlates of fine depth discrimination in monkey inferior temporal cortex
复制标题
DOI：
10.1523/jneurosci.1637-05.2005
复制
发表时间：
2005-11-16
影响因子：
5.3
通讯作者：
Fujita, I
中科院分区：
文献类型：
--
作者：
Uka, T;Tanabe, S;Fujita, I
双眼视差是引起深度感知的重要视觉线索。视差信号广泛分布在视觉皮层，但它们的相对作用却知之甚少。在这里，我们解决了枕颞（腹侧）视觉通路的视觉选择性神经元的反应和立体深度的行为辨别之间的相关性。我们记录了活动的选择性神经元在下颞叶皮层（IT），而猴子从事一个罚款立体深度歧视（立体视）任务。我们发现，神经元反应的试验波动与猴子的感知选择有关。我们认为，差异信号在IT，位于腹侧视觉通路，功能上与细粒深度的歧视。
Binocular disparity is an important visual cue that gives rise to the perception of depth. Disparity signals are widely spread across the visual cortex, but their relative role is poorly understood. Here, we addressed the correlation between the responses of disparity-selective neurons in the occipitotemporal (ventral) visual pathway and the behavioral discrimination of stereoscopic depth. We recorded activity of disparity-selective neurons in the inferior temporal cortex (IT) while monkeys were engaged in a fine stereoscopic depth discrimination (stereoacuity) task. We found that trial-to-trial fluctuations in neuronal responses correlated with the monkey's perceptual choice. We suggest that disparity signals in the IT, located in the ventral visual pathway, are functionally linked to the discrimination of fine-grain depth.