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首页> 外文期刊>Journal of vision >Elevated arousal levels enhance contrast perceptionKim, Lokey, & Ling
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Elevated arousal levels enhance contrast perceptionKim, Lokey, & Ling

机译：升高的唤醒水平可增强对比感知力金，洛基和林

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Our state of arousal fluctuates from moment to moment—fluctuations that can have profound impacts on behavior. Arousal has been proposed to play a powerful, widespread role in the brain, influencing processes as far ranging as perception, memory, learning, and decision making. Although arousal clearly plays a critical role in modulating behavior, the mechanisms underlying this modulation remain poorly understood. To address this knowledge gap, we examined the modulatory role of arousal on one of the cornerstones of visual perception: contrast perception. Using a reward-driven paradigm to manipulate arousal state, we discovered that elevated arousal state substantially enhances visual sensitivity, incurring a multiplicative modulation of contrast response. Contrast defines vision, determining whether objects appear visible or invisible to us, and these results indicate that one of the consequences of decreased arousal state is an impaired ability to visually process our environment.
机译：我们的唤醒状态有时会发生波动，这种波动会对行为产生深远的影响。人们已经提出，唤醒在大脑中起着强大而广泛的作用，影响到知觉，记忆，学习和决策等过程。尽管唤醒显然在调节行为中起着关键作用，但对于这种调节的机制仍知之甚少。为了解决这一知识鸿沟，我们研究了觉醒对视觉知觉的基石之一：对比知觉的调节作用。使用奖励驱动的范式来操纵觉醒状态，我们发现升高的觉醒状态显着增强了视觉灵敏度，从而引起对比度响应的倍增调制。对比度定义了视觉，确定了物体对我们来说是可见的还是不可见的，这些结果表明，唤醒状态降低的后果之一是视觉处理环境的能力受损。

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