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

An evolutionary perspective on hemispheric asymmetries.

P M Corballis1, M G Funnell, M S Gazzaniga

  • 1Center for Cognitive Neuroscience, Dartmouth College, USA.

Brain and Cognition
|June 17, 2000
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

Direct peer pressure may be a causal factor in mistaken-for-game hunting accidents.

Applied ergonomics·2023
Same author

Testing failure-to-identify hunting incidents using an immersive simulation: Is it viable?

Applied ergonomics·2021
Same author

Hemispheric mechanisms controlling voluntary and spontaneous facial expressions.

Journal of cognitive neuroscience·2013
Same author

Late positive event-related potentials after commissural section in humans.

Journal of cognitive neuroscience·2013
Same author

Interview with floyd e. Bloom.

Journal of cognitive neuroscience·2013
Same author

Hemispheric organization of visual memories.

Journal of cognitive neuroscience·2013
Same journal

Gelastic dysarthria: Speech-triggered pathological laughter with evidence for a selective pontine gating mechanism.

Brain and cognition·2026
Same journal

Brain correlates of linguistic-cognitive stimulation in neurotypical and Atypical older adult populations: A systematic review.

Brain and cognition·2026
Same journal

Effects of Dieting on Neural Encoding of Preferences for Edible and Non-Edible Rewards: An ERP Study.

Brain and cognition·2026
Same journal

Structural complexity of brain regions in mild cognitive impairment and Alzheimer's disease.

Brain and cognition·2026
Same journal

Spatial navigation training enhances performance on large-scale and small-scale spatial tasks through different neural mechanisms.

Brain and cognition·2026
Same journal

Unraveling the link between brain injury and enhanced artistic skills.

Brain and cognition·2026
See all related articles

Brain hemisphere specialization offers processing benefits but incurs costs. Language evolution in the left hemisphere may have impaired visuospatial skills, a deficit masked in intact brains but evident after corpus callosotomy.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Evolutionary Biology

Background:

  • Hemispheric specialization enhances cognitive processing capacity.
  • Costs of specialization are often masked by interhemispheric communication via cortical commissures.
  • Language evolution is primarily associated with the left hemisphere.

Purpose of the Study:

  • To investigate the potential costs of hemispheric specialization, specifically language evolution.
  • To explore whether left-hemisphere language specialization came at the expense of visuospatial abilities.
  • To examine if these costs become apparent in split-brain (callosotomy) patients.

Main Methods:

  • Analysis of cognitive functions in patients with severed cortical commissures (callosotomy).

Related Experiment Videos

  • Comparison of visuospatial and linguistic processing abilities between hemispheres.
  • Hypothesizing the historical trade-offs during human brain evolution.

    • Main Results:

    • Evidence suggests the left hemisphere may have lost pre-existing visuospatial functions due to specialization.
    • Right hemisphere deficits in linguistic processing may also occur as a consequence of specialization.
    • Callosotomy patients exhibit more pronounced hemisphere-specific functional costs.

    Conclusions:

    • Hemispheric specialization, particularly for language, incurs functional costs that can be revealed by interhemispheric disconnection.
    • The evolution of left-hemisphere language dominance may have led to a decline in its visuospatial capabilities.
    • This specialization process might also impact the right hemisphere's linguistic abilities.