Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Interhemispheric comparisons in a man with complete forebrain commissurotomy.

M C Corballis¹, A McLean

¹Research Centre for Cognitive Neuroscience, University of Auckland, New Zealand. m.corballis@auckland.ac.nz

Neuropsychology

|October 31, 2000

Summary

Split-brained individuals may have difficulties judging sizes across visual fields due to artifacts, not just interhemispheric transfer issues. Further research is needed to understand these perceptual discrepancies in split-brain patients.

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

Hematological and biochemical profiles in mule and horse neonates from birth to 30 days of age: a comparative study with clinical perspectives.

Journal of equine veterinary science·2026

Same author

Echocardiography guided management of atrial fibrillation.

Intensive care medicine·2025

Same author

The UK Mentoring and Support Programme (MSP) for those considering a career in Oral and Maxillofacial Surgery (OMFS). A review of a 'Register Interest in OMFS' website and the MSP as two key resources created by the British Association of Oral and Maxillofacial Surgeons to promote recruitment and retention (2008-2020).

The British journal of oral & maxillofacial surgery·2021

Same author

Administration of intravenous iron and tranexamic acid in the management of postoperative iron deficiency anaemia following free flap reconstruction: re-audit.

The British journal of oral & maxillofacial surgery·2020

Same author

Technical considerations when designing a gene expression panel for renal transplant diagnosis.

Scientific reports·2020

Same author

Improving systems of care during and after a pregnancy complicated by hyperglycaemia: A protocol for a complex health systems intervention.

BMC health services research·2020

Area of Science:

Neuroscience
Cognitive Psychology
Visual Perception

Background:

Previous research suggested split-brain individuals excel at comparing sizes across visual hemifields but struggle with same-size judgments.
This discrepancy was hypothesized to stem from interhemispheric transfer deficits.

Observation:

A split-brain patient (L.B.) showed significant deficits in judging larger/smaller circles and longer/shorter lines presented in opposite hemifields.
L.B.'s performance was largely explainable without invoking interhemispheric transfer.
A bias towards responding 'right longer' was observed when judging line extension into hemifields, but not in size comparison tasks.

Findings:

The study challenges the notion that split-brain size judgment discrepancies are solely due to interhemispheric transfer problems.

Related Experiment Videos

Performance deficits in split-brain patients may be influenced by task-specific artifacts or biases.

The 'right longer' bias in line extension tasks appears independent of the spatial distortions potentially affecting size judgments.

Implications:

Re-evaluation of previous findings on split-brain visual perception is warranted.
Understanding task-specific artifacts is crucial for accurate interpretation of split-brain research.
The findings contribute to the ongoing debate about hemispheric specialization and visual processing in humans.