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In attention research, one prominent theory attempting to explain how visual attention is shifted is the moving-spotlight theory.The primary idea being that attention is like a movable spotlight that is directed towards intended targets, focusing on each target in a serial manner.
The spotlight effect is an extension of several psychological phenomena. Among these is the phenomenon known as anchoring and adjustment, which suggests that individuals will use their own internal feelings of anxiety and the accompanying self-representation as an anchor, then insufficiently correct for the fact that others are less privy to those feelings than they are themselves.
A "hugely influential" [76] theory regarding selective attention is the perceptual load theory, which states that there are two mechanisms that affect attention: cognitive and perceptual. The perceptual mechanism considers the subject's ability to perceive or ignore stimuli, both task-related and non task-related.
The 'spotlight' and 'zoom-lens' accounts postulate that attention uses a single unitary focus. Therefore, spatial attention can only be allocated to adjacent areas in the visual field and consequently cannot be split. This was supported by an experiment that altered the spatial cueing paradigm by using two cues, a primary and a secondary cue.
Additional research proposes the notion of a moveable filter. The multimode theory of attention combines physical and semantic inputs into one theory. Within this model, attention is assumed to be flexible, allowing different depths of perceptual analysis. [28] Which feature gathers awareness is dependent upon the person's needs at the time. [3]
Visual indexing theory was created partly in response to what Pylyshyn viewed as limitations of traditional theories of perception and cognition — in particular, the spotlight model of attention, and the descriptive view of visual representation.
Feature integration theory is a theory of attention developed in 1980 by Anne Treisman and Garry Gelade that suggests that when perceiving a stimulus, features are "registered early, automatically, and in parallel, while objects are identified separately" and at a later stage in processing.
The Posner cueing task, also known as the Posner paradigm, is a neuropsychological test often used to assess attention. Formulated by Michael Posner, [1] it assesses a person's ability to perform an attentional shift. It has been used and modified to assess disorders, focal brain injury, and the effects of both on spatial attention.