NEURAL CORRELATES OF STEREOSCOPIC PERCEPTION

拟议的研究旨在识别和测量神经 立体深度感知的基础，通过将感知数据与 脑功能磁共振成像(FMRI)测量 大脑特定区域的活动。大脑中神经活动的区域 与知觉相关的可能参与或负责 立体深度感知器。我们的总体方法将是复制 在立体心理物理学方面取得里程碑式发现的实验， 同时收集大脑活动的功能磁共振测量数据。功能磁共振成像数据 将在几个可识别的视觉大脑中的每一个中单独分析 将大脑活动与感知联系起来的区域，并进行测试 关于立体视觉如何工作的心理生理动机的理论。 拟议研究的具体目标是：(1)衡量和 描述每个患者对双眼刺激的fMRI反应 大脑区域，并识别对立体视觉有反应的大脑区域 刺激；(2)比较脑活动和心身上部深度 (最大差异)极限；以及(3)比较大脑活动和 时间深度调制阈值(立体视觉处理速率)。 这些实验可以提高对立体盲性的理解， 这影响了6%-7%的美国人口。

The proposed research is designed to identify and measure the neural substrates of stereo depth perception, by comparing perceptual data with functional magnetic resonance imaging (fMRI) measurements of brain activity in specific brain areas. Brain areas where the neural activity correlates with the percept may be involved in, or responsible for, stereo depth perception. Our general approach will be to replicate experiments that have yielded landmark findings in stereo psychophysics, while collecting fMRI measurements of brain activity. The fMRI data will be analyzed separately in each of several identifiable visual brain areas to link brain activity with perception, and to test psychophysically-motivated theories about how stereoscopic vision works. The specific aims of the proposed research are: (1) to measure and characterize fMRI responses to binocular stimulation in each of several brain areas, and to identify brain areas that respond to stereoscopic stimuli; (2) to compare brain activity and psychophysical upper depth (maximum disparity) limits; and (3) to compare brain activity and temporal depth modulation thresholds (rate of stereo vision processing). These experiments could improve out understanding of stereoblindness, which affects 6-7 percent of the US population.