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Related Concept Videos

Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
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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"...

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Related Experiment Video

Updated: Jun 16, 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

Sleep deprivation impairs object-selective attention: a view from the ventral visual cortex.

Julian Lim1, Jiat Chow Tan, Sarayu Parimal

  • 1Neuroscience and Behavioral Disorders Program, Duke-NUS Graduate Medical School, Singapore, Singapore. julianzl@psych.upenn.edu

Plos One
|February 9, 2010
PubMed
Summary

Sleep deprivation (SD) impairs selective attention by reducing target detection accuracy and disrupting brain region connectivity. This affects visual cortex activation and cognitive control networks, impacting sustained attention.

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Published on: March 18, 2019

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Last Updated: Jun 16, 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

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Sleep Research

Background:

  • Previous research on sleep deprivation (SD) and attention focused on fronto-parietal control areas.
  • This study investigates SD's impact on ventral visual cortex activation and functional connectivity.

Purpose of the Study:

  • To assess how SD affects top-down attentional biasing in the ventral visual cortex.
  • To examine changes in functional connectivity between cognitive control regions and visual areas after SD.

Main Methods:

  • fMRI was used in 23 healthy adults under normal sleep (RW) and after total sleep deprivation.
  • Participants performed a selective attention task involving houses, faces, and scrambled images.
  • Task relevance varied across blocks, with unpredictable target presentation.

Main Results:

  • Sleep deprivation reduced target detection accuracy but did not alter false alarm rates or response times.
  • Attention to houses modulated parahippocampal place area (PPA) activation during RW, an effect abolished after SD.
  • SD decreased functional connectivity between the PPA and cognitive control areas (left intraparietal sulcus, left inferior frontal lobe).

Conclusions:

  • Sleep deprivation impairs selective attention, indicated by reduced PPA activation selectivity.
  • Reduced fronto-parietal and ventral visual activation suggests impaired sustained attention.
  • Decreased functional connectivity is a key imaging marker for SD's cognitive effects.