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Related Concept Videos

Visual Agnosia01:12

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex.
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,...
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.
Nonconscious Mimicry01:13

Nonconscious Mimicry

Nonconscious mimicry occurs when individuals alter their mannerisms to match the behaviors and expressions of those nearby, without intention.

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Related Experiment Video

Updated: Jun 9, 2026

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

Active ignoring in early visual cortex.

Helen E Payne1, Harriet A Allen

  • 1Brain and Behavioural Sciences, School of Psychology, University of Birmingham, UK.

Journal of Cognitive Neuroscience
|September 3, 2010
PubMed
Summary
This summary is machine-generated.

This study reveals how the brain actively ignores distractions. The precuneus region plays a key role in inhibiting irrelevant information, impacting visual cortex activity.

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Related Experiment Videos

Last Updated: Jun 9, 2026

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

Reversible Cooling-induced Deactivations to Study Cortical Contributions to Obstacle Memory in the Walking Cat
09:43

Reversible Cooling-induced Deactivations to Study Cortical Contributions to Obstacle Memory in the Walking Cat

Published on: December 11, 2017

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

Area of Science:

  • Cognitive Neuroscience
  • Neuroscience of Attention

Background:

  • Selective attention is vital for cognitive processing, involving both selecting relevant stimuli and ignoring irrelevant ones.
  • Active exclusion of distractors is a key attentional mechanism, though its neural underpinnings are not fully understood.

Purpose of the Study:

  • To investigate the neural mechanisms underlying the active exclusion of irrelevant information.
  • To identify brain regions involved in preparing to ignore distractors and successfully inhibiting them.

Main Methods:

  • Utilized a preview search paradigm to measure neural activity associated with ignoring distractors.
  • Employed neuroimaging techniques to observe brain activity in the precuneus, visual cortex, and fronto-parietal regions.

Main Results:

  • Increased activity was observed in the precuneus and primary visual cortex during the preparation to ignore distractors.
  • Reduced activity in fronto-parietal regions occurred during distractor previewing.
  • Successful exclusion of items from search correlated with reduced early visual cortex activity and precuneus activation.

Conclusions:

  • Active exclusion of distractions involves an initial encoding stage and a subsequent inhibition stage.
  • The precuneus appears to control this active exclusion process.
  • The precuneus can modulate activity in early visual cortex, including V1, to inhibit distractors.