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Related Concept Videos

Vision01:24

Vision

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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Visual System01:26

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Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
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Association Areas of the Cortex01:21

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Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
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Depth Perception and Spatial Vision01:15

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Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
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Perceptual Constancy01:12

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Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
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Gestalt Principles of Perception01:21

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Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
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Simple action alters attention towards visual features.

Zixuan Wang1,2, Blaire J Weidler3, Pei Sun4

  • 1Department of Psychology, Tsinghua University, Haidian, Beijing, China.

Attention, Perception & Psychophysics
|March 9, 2021
PubMed
Summary
This summary is machine-generated.

A prior action influences subsequent visual attention, prioritizing objects matching the action's target features. This action effect extends beyond exact matches to include shape and color, enhancing visual feature prioritization.

Keywords:
ActionAttentionVisual search

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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Action Science

Background:

  • The action effect demonstrates how performing an action towards a stimulus influences attention in subsequent visual search.
  • Previous research primarily focused on exact matches varying only by color, limiting understanding of the action effect's generalizability.

Purpose of the Study:

  • To investigate if the action effect extends to shape matches.
  • To determine if action prioritizes objects matching only shape or color, or both.
  • To compare the strength of action prioritization for color versus shape features.

Main Methods:

  • A series of experiments were conducted using visual search tasks.
  • Participants performed actions towards prime stimuli.
  • Subsequent attention was measured based on responses to targets with matching or non-matching features (color and shape).

Main Results:

  • Action was shown to prioritize objects matching the shape of the prime stimulus.
  • Action prioritized attention to objects matching either the color or shape individually.
  • Prioritization for color was observed consistently, while shape prioritization occurred only when color was not a primary focus.

Conclusions:

  • The action effect is generalizable beyond exact matches, influencing attention based on shape and color.
  • Action enhances attention to individual visual features present in acted-on objects.
  • Action exerts a significant influence on subsequent attention, with color features potentially having a stronger impact than shape.