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

Line bisection in hemianopia

J J Barton1, S E Black

  • 1Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA. jbarton@bidmc.harvard.edu

Journal of Neurology, Neurosurgery, and Psychiatry
|May 23, 1998
PubMed
Summary
This summary is machine-generated.

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

Safety, Efficacy and Clinical Applications of Focused Ultrasound-Mediated Blood Brain Barrier Opening in Alzheimer's Disease: A Systematic Review.

The journal of prevention of Alzheimer's disease·2024
Same author

Investigating the Factor Structure of the Preclinical Alzheimer Cognitive Composite and Cognitive Function Index across Racial/Ethnic, Sex, and Aβ Status Groups in the A4 Study.

The journal of prevention of Alzheimer's disease·2024
Same author

Increased Diameters of the Internal Cerebral Veins and the Basal Veins of Rosenthal Are Associated with White Matter Hyperintensity Volume.

AJNR. American journal of neuroradiology·2019
Same author

Temporal and Spatial Variances in Arterial Spin-Labeling Are Inversely Related to Large-Artery Blood Velocity.

AJNR. American journal of neuroradiology·2017
Same author

The neuropathological signature of bulbar-onset ALS: A systematic review.

Neuroscience and biobehavioral reviews·2017
Same author

Assessing cognitive functioning in ALS: A focus on frontal lobe processes.

Amyotrophic lateral sclerosis & frontotemporal degeneration·2016
Same journal

Global epidemiology of amyotrophic lateral sclerosis: a systematic review and meta-analysis.

Journal of neurology, neurosurgery, and psychiatry·2026
Same journal

Diagnostic accuracy of a two-cut-off approach using the FAQ/MMSE ratio and FAQ for clinical preselection of patients for anti-amyloid therapy.

Journal of neurology, neurosurgery, and psychiatry·2026
Same journal

Cancer risk and mortality in patients with multiple sclerosis in Finland: a retrospective population-based cohort study.

Journal of neurology, neurosurgery, and psychiatry·2026
Same journal

Visuospatial working memory in Huntington's disease: behavioural and structural brain correlates.

Journal of neurology, neurosurgery, and psychiatry·2026
Same journal

Characteristics and outcomes in electric scooter-related traumatic brain injuries in Helsinki.

Journal of neurology, neurosurgery, and psychiatry·2026
Same journal

Chronological ageing and ovarian reserve in MS: insights from anti-Müllerian hormone and disability progression.

Journal of neurology, neurosurgery, and psychiatry·2026
See all related articles

Hemianopia, a visual field defect, causes a contralateral bias in line bisection tasks. This spatial bias is less pronounced than the ipsilateral bias observed in hemineglect patients.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Cognitive Psychology

Background:

  • The impact of hemianopia on spatial cognition, specifically line bisection, remains largely uninvestigated.
  • Unilateral cerebral lesions can lead to hemineglect and visual field defects, affecting spatial awareness.

Purpose of the Study:

  • To investigate the effect of hemianopia on manual line bisection performance.
  • To compare spatial biases in patients with hemianopia versus hemineglect.

Main Methods:

  • Manual line bisection task administered to 30 patients with unilateral cerebral hemispheric lesions.
  • Patients were categorized based on visual field defects (hemianopia) and hemineglect.
  • Performance compared against 68 neurologically healthy control subjects.

Related Experiment Videos

Main Results:

  • Patients with hemianopia exhibited a contralateral bias in line bisection.
  • This contralateral bias was less pronounced than the ipsilateral bias seen in hemineglect patients.
  • Macular region involvement in hemianopia intensified the contralateral bisection bias.

Conclusions:

  • Hemianopia induces a contralateral bias in line bisection, suggesting altered spatial representation or attentional strategies.
  • The findings differentiate the spatial consequences of hemianopia from hemineglect.