Excitation and inhibition in visual processing

项目摘要 系统神经科学的一个基本目标是描述感觉输入是如何整合和 引导动物的行为。为了能够整合这些输入，早期的感觉系统已经 开发了特定刺激功能的选择性，使他们能够使用这些功能分析输入 以特征为基础。一个典型的例子是视觉中出现的方向选择性 皮质学(Hubel和Wiseel，1962)。在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化转换，使其能够识别多个 对指导动物行为很重要的视觉场景的各个方面，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功能选择性 视觉加工在一定程度上是已知的，这些感觉的性质和机制 转型不太为人所知。我们的目标是发现运动信号是如何不同的 以产生对运动的全局感知，并理解在这种情况下 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.