NEURAL SIGNALS AT THE SPATIOTEMPORAL EDGE

该提案概述了一年的研究，以检查清醒行为灵长类动物的外侧膝状核内神经信号的强度，以响应时空边缘。使用隐形幻觉（例如向前和向后掩蔽）的人类心理物理学研究表明，掩蔽在空间中的边缘以及它们开始和终止的时间（它们的时间边缘）对于使目标不可见最有效。 因此，对掩蔽重要的神经信号最有可能与掩蔽的时空边缘相关。 拟议的实验将通过记录单个单元并显示先前人类心理物理实验中使用的刺激来检查灵长类动物外侧膝状核中这些边缘效应（空间和时间）的神经相关性。 这些实验将空间边缘效应与时间边缘效应分开，并分别测试它们。 结果应揭示与面罩时空内部产生的信号相比，面罩时空边缘的神经抑制的相对强度。

This proposal outlines a single year of research to examine the strength of neural signals within the lateral geniculate nucleus of awake behaving primates, in response to spatiotemporal edges. Human psychophysical studies using illusions of invisibility (such as forward and backward masking) have shown that it is the edges of masks in space, as well as the timing of their onset and termination (their temporal edges), that are most effective in rendering targets invisible. Neural signals important to masking are therefore most likely to be associated with the mask s spatiotemporal edge. The proposed experiments will examine the neural correlates of these edge effects (both spatial and temporal) in the lateral geniculate nucleus of primates by recording from single-units while displaying stimuli used in previous human psychophysical experiments. These experiments will segregate the spatial edge effects from the temporal edge effects and test them conveyed separately. The results should reveal the relative strength of neural inhibition from the spatiotemporal edge of the mask in comparison with the signal generated in the mask s spatial and temporal interior.