"According to a unified theory of perception, the function and the rules that govern perception do not change depending on what is perceived, whether it is clouds in the sky, birds in the trees, flowers in the grass, or snakes nearby. On this model, if danger modifies perception, it is only indirectly and superficially, through top-down influences."
"In computer science, the notion of an operating mode is defined as a method that determines how an action is carried out to accomplish a given task, such as inputting, processing, outputting, storing, and controlling. A computer can switch from one mode to another depending on the context. What I propose is that when we are in danger, perception switches to a different operating mode, let us call it the Alert mode."
"The specificities of the Alert mode follow from its unique function. It is typically assumed that the function of perception is to provide a veridical rendering of the perceived object. For instance, when you see a tree, visual processing typically results in a relatively accurate representation of its shape, its color, and so forth. Compare this w"
Perception can operate in different modes rather than following a single, context-invariant set of rules. When an organism faces danger, visual processing switches into an Alert mode that serves a distinct function, features a characteristic affective phenomenology, and unfolds on a different temporal profile. The Alert mode prioritizes survival-relevant aspects of the environment and can alter basic perceptual operations rather than merely biasing salience through top-down belief or emotion. Computer science's notion of operating modes illustrates how input, processing, and control can reconfigure depending on context. Other specialized modes, such as a social mode for perceiving agents, may also exist.
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