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

[Lateralization and interhemispheric integration of directed attention].

S Ishiai1

  • 1Department of Rehabilitation, Tokyo Metropolitan Institute for Neuroscience.

Rinsho Shinkeigaku = Clinical Neurology
|September 19, 2002
PubMed
Summary

The right hemisphere directs attention bilaterally, while the left hemisphere focuses rightward. Callosal infarction can disrupt this balance, causing left unilateral spatial neglect despite an intact right hemisphere.

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

Leftward deviation of eyes in human face drawing: a new diagnostic measure for left unilateral spatial neglect.

Journal of the neurological sciences·2010
Same author

Conflict and integration of spatial attention between disconnected hemispheres.

Journal of neurology, neurosurgery, and psychiatry·2001
Same author

Significance of paradoxical leftward error of line bisection in left unilateral spatial neglect.

Brain and cognition·2001
Same author

Line versus representational bisections in unilateral spatial neglect.

Journal of neurology, neurosurgery, and psychiatry·2000
Same author

Unilateral spatial neglect in AD: significance of line bisection performance.

Neurology·2000
Same author

Why are some patients with severe neglect able to copy a cube? The significance of verbal intelligence.

Neuropsychologia·2000

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurology

Context:

  • Directed attention is crucial for processing sensory information.
  • Unilateral spatial neglect, often following right hemisphere damage, highlights attention's lateralization.
  • Hemispheric specialization in attention distribution is a key area of research.

Purpose:

  • To investigate the distinct roles of the right and left cerebral hemispheres in directed attention.
  • To explore the mechanisms underlying unilateral spatial neglect, particularly after callosal damage.
  • To analyze eye movement patterns in a patient with callosal infarction to understand attentional control.

Summary:

  • Healthy individuals exhibit balanced attention across both hemispaces.
  • A hypothesis suggests the right hemisphere attends bilaterally, while the left attends primarily to the right.

Related Experiment Videos

  • Callosotomy patients do not show neglect, but callosal infarction can lead to left neglect by impairing interhemispheric integration and causing rightward attentional bias.

    • Impact:

    • Findings challenge the notion of simple right hemisphere dominance for attention.
    • Suggests that interhemispheric communication is vital for normal spatial attention.
    • Provides insights into the neural basis of unilateral spatial neglect and potential therapeutic targets.