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

Hemispheric differences in global and local processing dependent on exposure duration

M J Blanca1, C Zalabardo, F García-Criado

  • 1Facultad de Psicología, Dpto. Psicología Básica, Psicobiología y Metodología, University of Málaga, Spain.

Neuropsychologia
|November 1, 1994
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

Assessment of an educational program for adolescents about organ donation and transplantation.

Transplantation proceedings·2008
Same author

[A questionnaire to assess school social climate].

Psicothema·2007
Same author

Multifactorial snowball effect in the reduction of refusals for organ procurement.

Transplantation proceedings·2006
Same author

Organ donation: a comparison of donating and nondonating families.

Transplantation proceedings·2005
Same author

Hemispheric differences in global and local processing with orientation classification tasks.

Neuropsychologia·2002
Same author

Discriminant variables between organ donors and nondonors: a post hoc investigation.

Journal of transplant coordination : official publication of the North American Transplant Coordinators Organization (NATCO)·1999

Cerebral hemispheres show distinct processing of global and local information, but only with brief 50-millisecond exposures. Longer exposures eliminate these hemispheric differences in verbal stimuli analysis.

Area of Science:

  • Cognitive Neuroscience
  • Neuropsychology
  • Human Information Processing

Background:

  • Hemispheric specialization is a key concept in understanding brain function.
  • Previous research suggests potential differences in processing global versus local visual information between the left and right hemispheres.
  • The role of stimulus presentation duration in modulating these hemispheric effects remains underexplored.

Purpose of the Study:

  • To investigate hemispheric differences in processing global and local components of verbal hierarchical stimuli.
  • To examine how varying stimulus exposure durations (50, 100, 200 msec) influence these hemispheric processing capabilities.
  • To determine if specific visual fields (left/right visual field - LVF/RVF) show advantages for global or local processing.

Main Methods:

Related Experiment Videos

  • Participants performed a target-detection task using verbal hierarchical stimuli.
  • Stimulus exposure duration was manipulated across three levels: 50, 100, and 200 milliseconds.
  • Accuracy rates were analyzed to assess performance differences between cerebral hemispheres and visual fields.

Main Results:

  • A significant right hemisphere (RH) advantage in the left visual field (LVF) was observed for global-level target detection at 50 msec.
  • A significant left hemisphere (LH) advantage in the right visual field (RVF) was found for local-level target detection at 50 msec.
  • No significant hemispheric differences in processing global or local information were detected at 100 msec and 200 msec exposure durations.

Conclusions:

  • Hemispheric specialization for global and local processing of verbal stimuli is condition-dependent, particularly sensitive to presentation duration.
  • Brief, rapid visual processing (50 msec) reveals distinct functional lateralization, with the RH/LVF excelling at global analysis and the LH/RVF at local analysis.
  • Extended exposure durations (100-200 msec) lead to comparable processing across both hemispheres, suggesting a shift in information processing strategies.