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Related Concept Videos

Visual System01:26

Visual System

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.
Once through the pupil, the light passes through the lens, a...
Gestalt Principles of Perception01:21

Gestalt Principles of Perception

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...
Perceptual Constancy01:12

Perceptual Constancy

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.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
Vision01:24

Vision

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.
Association Areas of the Cortex01:21

Association Areas of the Cortex

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:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Parallel Processing01:20

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...

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Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention
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Visual consciousness and intertrial feature priming.

Ziv Peremen1, Rinat Hilo, Dominique Lamy

  • 1Tel Aviv University, Tel Aviv, Israel.

Journal of Vision
|April 3, 2013
PubMed
Summary
This summary is machine-generated.

Intertrial repetition priming enhances conscious awareness of visual targets, but only if they are already partially perceived. Full awareness in both prime and probe trials is crucial for this priming effect.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Intertrial repetition priming significantly improves visual search performance.
  • Priming enhances the perceptual quality of repeated targets.
  • The relationship between priming and conscious perception requires further investigation.

Purpose of the Study:

  • To investigate the link between intertrial repetition priming and conscious perception.
  • To determine if priming influences subjective awareness of visual targets.
  • To explore the conditions under which priming effects emerge.

Main Methods:

  • Utilized backward masking to induce liminal perception (varying levels of conscious awareness).
  • Employed probe trials (Experiment 1) and prime trials (Experiment 2) with masked displays.
  • Incorporated both objective and subjective measures of target perception.

Main Results:

  • Intertrial priming boosts full conscious access to targets already partially perceived.
  • Priming effects require full awareness of the target in both prime and probe trials.
  • Demonstrated that priming benefits are contingent on the level of conscious awareness.

Conclusions:

  • Intertrial repetition priming modulates conscious awareness, not just perceptual quality.
  • Full conscious awareness is a prerequisite for observing intertrial priming effects.
  • Findings have implications for understanding implicit short-term memory in visual search.