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

Parallel response selection after callosotomy.

Eliot Hazeltine1, Andrea Weinstein, Richard B Ivry

  • 1Department of Psychology, University of Iowa, Iowa City, IA 52242, USA. eliot-hazeltine@uiowa.edu

Journal of Cognitive Neuroscience
|November 17, 2007
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

Automaticity of Word Recognition is a Unique Predictor of Reading Fluency in Middle-School Students.

Journal of educational psychology·2026
Same author

A systematic investigation reveals dissociable effects of ageing on implicit and explicit components of sensorimotor learning.

Nature human behaviour·2026
Same author

Cerebellar contributions to action and cognition: Prediction, timescale, and continuity.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Motor biases reflect a misalignment between visual and proprioceptive reference frames.

eLife·2026
Same author

Global functional connectivity of cognitive control networks predicts task-switching performance in older adults.

Cortex; a journal devoted to the study of the nervous system and behavior·2026
Same author

Neural traces of composite tasks in complex task representation in the human brain reflects learning performance.

PLoS biology·2026

Split-brain patients show minimal dual-task costs, suggesting previous costs were strategic rather than due to cognitive architecture limitations. This challenges existing theories on dual-task performance constraints.

Area of Science:

  • Cognitive Neuroscience
  • Neuropsychology

Background:

  • Previous research indicated dual-task costs in split-brain patients, even with tasks lateralized to separate hemispheres.
  • Interference patterns differed from controls, suggesting response initiation constraints or strategic withholding of responses.

Purpose of the Study:

  • To investigate dual-task costs and compatibility effects in split-brain patients under simultaneous stimulus presentation without task priority.
  • To determine if observed dual-task costs in split-brain patients reflect fundamental cognitive constraints or strategic behavior.

Main Methods:

  • Simultaneous presentation of stimuli for two tasks to neurologically intact and split-brain participants.
  • Measurement of dual-task costs and response compatibility effects between hands.
  • Absence of explicit task prioritization instructions.

Related Experiment Videos

Main Results:

  • Neurologically intact participants exhibited robust dual-task costs and compatibility effects.
  • Split-brain patients demonstrated significantly reduced dual-task costs and compatibility effects.
  • Minimal costs in split-brain patients suggest strategic task management rather than inherent processing limitations.

Conclusions:

  • Dual-task costs in split-brain patients may be largely strategic, influenced by task prioritization, not fundamental cognitive architecture.
  • The findings challenge the notion of inherent sequential processing constraints in split-brain individuals.
  • This research offers new insights into the cognitive control and strategic adaptation in split-brain patients.