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A circuit for pupil orienting responses: implications for cognitive modulation of pupil size

机译:面向瞳孔的反应电路:对瞳孔大小的认知调节的影响

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摘要

Pupil size, as a component of orienting, changes rapidly in response to local salient events in the environment, in addition to its well-known illumination-dependent modulation. Recent research has shown that visual, auditory, or audiovisual stimuli can elicit transient pupil dilation, and the timing and size of the evoked responses are systematically modulated by stimulus salience. Moreover, weak microstimulation of the superior colliculus (SC), a midbrain structure involved in eye movements and attention, evokes similar transient pupil dilation, suggesting that the SC coordinates the orienting response which includes transient pupil dilation. Projections from the SC to the pupil control circuitry provide a novel neural substrate underlying pupil modulation by various cognitive processes.
机译:作为定向的组成部分,瞳孔大小除了其众所周知的依赖照明的调制之外,还响应于环境中的局部显着事件而快速变化。最近的研究表明,视觉,听觉或视听刺激可引起短暂的瞳孔扩张,诱发反应的时机和大小受刺激显着性系统地调节。此外,上丘(SC)的微弱刺激是参与眼睛运动和注意力的中脑结构,引起类似的短暂瞳孔散瞳,提示SC协调了包括短暂瞳孔散瞳的定向反应。从SC到瞳孔控制电路的投影通过各种认知过程提供了一种新型的神经底物,构成了瞳孔调节的基础。

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