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Related Concept Videos

Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
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"...
Prosopagnosia01:24

Prosopagnosia

Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...

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Related Experiment Video

Updated: May 9, 2026

Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection
07:04

Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection

Published on: March 10, 2021

Is persistent visual neglect associated with poor survival?

M Jehkonen1, M Laihosalo, T Saunamäki

  • 1University of Tampere, Department of Psychology, Tampere, Finland. ; Tampere University Hospital, Department of Neurology and Rehabilitation, Tampere, Finland.

Journal of Central Nervous System Disease
|July 18, 2013
PubMed
Summary
This summary is machine-generated.

Poor recovery from visual neglect after a right hemisphere stroke is linked to increased long-term mortality. This finding highlights the prognostic value of monitoring neuropsychological recovery in stroke survivors.

Keywords:
cognitionneglectstrokesurvival

Related Experiment Videos

Last Updated: May 9, 2026

Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection
07:04

Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection

Published on: March 10, 2021

Area of Science:

  • Neurology
  • Neuropsychology
  • Stroke Research

Background:

  • Limited research exists on visual neglect and survival post-right hemisphere (RH) stroke.
  • Visual neglect is a common deficit following RH stroke.

Purpose of the Study:

  • To investigate the relationship between visual neglect, its recovery, and survival in first-ever RH stroke patients.
  • To identify predictors of long-term mortality in this patient cohort.

Main Methods:

  • Retrospective follow-up of 51 RH stroke patients (1994-1997) for survival until 2009.
  • Analysis of acute-phase neurological, neuropsychological, and neuroradiological data.
  • Identification of survival predictors using univariate and multivariate models.

Main Results:

  • Twenty-eight (55%) patients died during the follow-up period.
  • Age, education level, and poor recovery of visual neglect were significant predictors of death.
  • Poor recovery of visual neglect and low education were the strongest predictors of mortality in the multivariate model.

Conclusions:

  • Impaired recovery of visual neglect is associated with increased long-term mortality in patients with right hemisphere infarcts.
  • Neuropsychological follow-up provides valuable prognostic information for RH stroke patients.