Excitation and inhibition in visual processing

项目概要 系统神经科学的一个基本目标是描述感觉输入如何整合和 指导动物的行为。为了能够整合这些输入，早期的感觉系统已经 开发了对特定刺激特征的选择性，使他们能够使用这些特征来分析输入 特征为基础。一个典型的例子是视觉中方向选择性的出现 皮质（Hubel 和 Wiesel，1962）。早期视觉系统中的连续处理阶段执行 对传入输入进行系统转换，使他们能够识别多个 视觉场景的各个方面对于指导动物的行为很重要，包括位置、形状、 物体的深度和运动。虽然在不同阶段出现的独特特征选择性 视觉处理在一定程度上是已知的，这些感觉的性质和机制 转换不太容易理解。我们的目标是揭示运动信号的不同程度 整合以产生对运动的整体感知，并了解这种运动的条件 整合失败。

Project Summary A fundamental goal of systems neuroscience is to describe how sensory inputs are integrated and guide an animal's behavior. To be able to integrate these inputs, early sensory systems have developed selectivities for specific stimulus features that allow them to analyze the inputs using these features as basis. A classic example is the emergence of orientation selectivity within the visual cortex (Hubel and Wiesel, 1962). Successive processing stages in the early visual system perform systematic transformations on the incoming inputs that enable them to be able to identify multiple aspects of the visual scene important for guiding an animal's behavior, including the location, shape, depth and motion of objects. While the unique feature selectivities emerging at different stages in visual processing are known to a certain extent, the nature and mechanisms of these sensory transformations less well-understood. We aim to uncover how disparate motion signals are integrated to produce a global percept of motion, and to understand the conditions in which such integration fails.