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

Temporal impulse response functions for luminance and colour during saccades

D C Burr1, M C Morrone

  • 1Istituto di Neurofisiologia Del CNR, Pisa, Italy. dave@neuro.in.pi.cnr.it

Vision Research
|July 1, 1996
PubMed
Summary

Saccadic eye movements selectively reduce sensitivity to luminance, but not chromatic, stimuli. This visual processing change during saccades is faster and mediated by contrast gain control mechanisms.

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

Primary visual cortex BOLD responses to relative localization of sounds at 7T.

iScience·2026
Same author

Spontaneous perception of numerosity in pre-school children.

Proceedings. Biological sciences·2019
Same author

Perception during double-step saccades.

Scientific reports·2018
Same author

Plasticity of the human visual brain after an early cortical lesion.

Neuropsychologia·2017
Same author

Visual BOLD Response in Late Blind Subjects with Argus II Retinal Prosthesis.

PLoS biology·2016
Same author

Effects of adaptation on numerosity decoding in the human brain.

NeuroImage·2016

Area of Science:

  • Neuroscience
  • Visual Perception
  • Ophthalmology

Background:

  • Saccadic eye movements cause a temporary reduction in visual sensitivity, known as saccadic suppression.
  • Previous research indicated that saccadic suppression primarily affects low spatial frequency luminance-modulated stimuli, sparing high spatial frequency and equiluminant stimuli.

Purpose of the Study:

  • To investigate the temporal dynamics of visual sensitivity to luminance and chromatic stimuli during saccadic eye movements.
  • To elucidate the underlying neural mechanisms of saccadic suppression by examining impulse response functions.

Main Methods:

  • Employed the two-pulse summation technique to measure visual sensitivity.
  • Assessed sensitivity as a function of stimulus-onset asynchrony during both normal viewing and saccades.

Related Experiment Videos

  • Estimated impulse response functions from the summation data for luminance and equiluminant stimuli.

    • Main Results:

    • Equiluminant stimuli showed monophasic impulse response functions during both normal viewing and saccades.
    • Luminance-modulated stimuli exhibited di-phasic impulse response functions in both conditions.
    • Impulse responses for luminance modulation were faster during saccades compared to normal viewing.

    Conclusions:

    • The temporal characteristics of saccadic suppression suggest a role for contrast gain control mechanisms.
    • These findings align with the known properties of M-cells, implicated in luminance processing, rather than P-cells, which are involved in chromatic processing.