Jove
Visualize
Contact Us

Related Experiment Videos

Visual hemispheric asymmetries depend on which spatial frequencies are task relevant.

F L Kitterle1, J B Hellige, S Christman

  • 1University of Toledo, Ohio 43606.

Brain and Cognition
|November 1, 1992
PubMed
Summary

Visual processing of gratings differs by hemisphere. Classifying bars by fundamental frequency showed a left visual field/right hemisphere advantage, while classifying by harmonic frequencies revealed a right visual field/left hemisphere advantage.

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

The role of noun imagery in the speed of processing the grammaticality of adjective-noun phrases.

Memory & cognition·2013
Same author

Recognition of CVC Syllables from LVF, RVF, and Central Locations: Hemispheric Differences and Interhemispheric Interaction.

Journal of cognitive neuroscience·2013
Same author

Categorical versus Coordinate Spatial Processing: Effects of Blurring and Hemispheric Asymmetry.

Journal of cognitive neuroscience·2013
Same author

Hemispheric asymmetries in the identification of band-pass filtered letters.

Psychonomic bulletin & review·2011
Same author

Questions of criteria: Reply to Peterzell (1997).

Psychonomic bulletin & review·2011
Same author

Hemispheric asymmetry for word naming: effects of frequency and regularity of pronunciation.

Laterality·2004
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

Area of Science:

  • Neuroscience
  • Visual Perception
  • Hemispheric Specialization

Background:

  • The human visual system processes complex stimuli like gratings using information from both fundamental and harmonic frequencies.
  • Hemispheric specialization suggests different brain regions are dominant for specific visual tasks.

Purpose of the Study:

  • To investigate whether the classification of visual gratings based on different frequency components (fundamental vs. harmonic) is differentially lateralized to the left or right hemisphere.
  • To explore the role of visual field (left visual field/right hemisphere vs. right visual field/left hemisphere) in processing grating characteristics.

Main Methods:

  • Participants classified sine-wave and square-wave gratings.
  • Classification was based either on fundamental frequency (bar width: wide/narrow) or higher harmonic frequencies (bar sharpness: sharp/fuzzy).

Related Experiment Videos

  • Stimuli were presented in either the left visual field (LVF) or right visual field (RVF).

    • Main Results:

    • A left visual field/right hemisphere advantage was observed when classification relied on fundamental frequencies.
    • A right visual field/left hemisphere advantage emerged when classification involved higher harmonic frequencies (sharp/fuzzy distinction).

    Conclusions:

    • Visual grating perception exhibits functional lateralization, with distinct hemispheric advantages depending on the processing strategy (fundamental vs. harmonic frequency).
    • The findings highlight the differential roles of the left and right hemispheres in analyzing basic spatial frequency information versus finer details (harmonics) of visual stimuli.