NEURAL SIGNALS AT THE SPATIOTEMPORAL EDGE

这项建议概述了一项为期一年的研究，以检验清醒行为灵长类动物外侧膝状核内神经信号的强度，以回应时空边缘。使用隐形错觉(如前向和后向掩蔽)的人类心理物理学研究表明，在使目标隐形方面，最有效的是空间中面具的边缘，以及它们开始和终止的时间(它们的临时边缘)。因此，对掩蔽很重要的神经信号最有可能与掩蔽S的时空边缘有关。这项拟议的实验将通过从单个单位记录，同时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)的神经关联。这些实验将分离空间边缘效应和时间边缘效应，并分别测试它们的传达。结果应该揭示，与屏蔽S空间和时间内部产生的信号相比，来自屏蔽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.