But exploration of those phenomena requires a separate treatment. Indeed, many emotions arise immediately upon the perception of emotionally evocative stimuli, some requiring more interpretation (rising gas prices) and some less (snakes, spiders). However, it should be understood that perception is also fundamental to emotion. The reader will note that, although this article concerns Emotion and Perception, we consider only emotional influences on perception and not the reverse.
More generally, we propose that emotion influences perception in the interest of resource maintenance. We propose a functional view in which emotional influences on perception can be seen as evolving in the interest of minimizing negative and maximizing positive outcomes, a view consistent with the “affect-as-information” hypothesis. And both emotional and bodily states appear to regulate visual perception of spatial layout. For example, both emotion and motivation appear to prepare the visual system to detect relevant aspects of the environment by making them easier to see. In addition, since emotions have both bodily and motivational components, we also touch on perceptual influences of bodily and motivational states. local perceptual focus, susceptibility to visual illusions, and perceptions of natural environments.
The emotional phenomena discussed include effects on early visual processes, global vs. Thus, we discuss candidate explanations as we review specific findings. Rather than a single, general mechanism that explains them all, a number of processes appear to be involved. In this article, we review evidence of a variety of emotional influences on visual perception. Such findings indicate that the perception of spatial layout is in fact influenced by non-optical factors, including emotion. For example, when we are feeling sad, we will perceive the hill to be steeper than when we are feeling happy. Moreover, our perception of the steepness will change from one occasion to the next depending on our mood. The reality, however, is that the incline is far less steep than it appears (most people perceive a 5 degree hill to be 20 degrees or more). Most of us assume quite reasonably that as we look at a hill, for example, the steepness of the incline in our visual image is more or less the steepness of the hill in the world. To scientists who study perception as well as to those who study emotion, the idea that emotion routinely alters perception may seem completely foreign.
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