Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Visual and nonvisual neglect after unilateral brain lesions: modulation by visual input.

G Vallar1, M L Rusconi, G Geminiani

  • 1Istituto di Clinica Neurologica dell'Università di Milano.

The International Journal of Neuroscience
|December 1, 1991
PubMed
Summary

Patients with brain damage, especially to the right hemisphere, show spatial exploration deficits. Vision aids exploration, but distinct visual and tactile systems are involved.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Evidence for the Collective Nature of Radial Flow in Pb+Pb Collisions with the ATLAS Detector.

Physical review letters·2026
Same author

Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector.

Physical review letters·2025
Same author

Evidence for Longitudinally Polarized W Bosons in the Electroweak Production of Same-Sign W Boson Pairs in Association with Two Jets in pp Collisions at sqrt[s]=13  TeV with the ATLAS Detector.

Physical review letters·2025
Same author

Search for Gamma-Ray Spectral Lines from Dark Matter Annihilation up to 100 TeV toward the Galactic Center with MAGIC.

Physical review letters·2023
Same author

Observation of Massless and Massive Collective Excitations with Faraday Patterns in a Two-Component Superfluid.

Physical review letters·2022
Same author

A Ge.F.I. - ISFG European collaborative study on DNA identification of Cannabis sativa samples using a 13-locus multiplex STR method.

Forensic science international·2021

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurology

Background:

  • Unilateral brain lesions can lead to spatial neglect.
  • Understanding spatial exploration deficits is crucial for rehabilitation.

Purpose of the Study:

  • To investigate spatial exploration in patients with unilateral brain damage.
  • To differentiate the roles of visual and non-visual information in spatial tasks.
  • To explore the underlying mechanisms of spatial neglect.

Main Methods:

  • 110 patients with unilateral brain lesions (66 right brain-damaged, 44 left brain-damaged) performed a spatial exploratory task.
  • The task was conducted under two conditions: with and without visual aid.
  • Deficits were analyzed based on lesion side and task condition.

Related Experiment Videos

Main Results:

  • Spatial exploratory deficits predominantly affected the contralesional half-space.
  • Right brain-damaged patients showed more frequent deficits.
  • A double dissociation emerged: visual impairments correlated with visual field deficits, while non-visual impairments occurred without them.

Conclusions:

  • Distinct visual and tactile-kinesthetic spatial representational systems are involved in exploring extrapersonal space.
  • An input-output model explains the link between visual field deficits and neglect.
  • Attentional, modality-specific, non-sensory components may contribute to visual field deficits in neglect.