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

Two temporal channels or three? A re-evaluation.

S T Hammett1, A T Smith

  • 1School of Psychology, University of Wales College of Cardiff.

Vision Research
|February 1, 1992
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

Malignant transformation in a cohort of patients with oral epithelial dysplasia.

The British journal of oral & maxillofacial surgery·2021
Same author

Three changes to reduce the loss of dual degree trainees from OMFS national specialty selection in the UK: evidence based proposals.

The British journal of oral & maxillofacial surgery·2021
Same author

Connectivity of the Cingulate Sulcus Visual Area (CSv) in Macaque Monkeys.

Cerebral cortex (New York, N.Y. : 1991)·2020
Same author

Hyperexcitability of brain stem pathways in cerebral palsy.

Journal of neurophysiology·2018
Same author

Measuring health-related benefit and quality of care in oral and maxillofacial surgery: British Association of Oral and Maxillofacial Surgeons Outcomes Project.

The British journal of oral & maxillofacial surgery·2018
Same author

Errors in interpretation of neck levels in postoperative pathological specimens.

The British journal of oral & maxillofacial surgery·2016
Same journal

Computational and mathematical models in vision: Quantitative approaches to understanding visual perception.

Vision research·2026
Same journal

Complex interactions between lightness, chroma, and hue in color ensemble perception.

Vision research·2026
Same journal

Driving with autism spectrum disorder: Exploring the impact of tactile hazard warnings on gaze behavior and hazard responses.

Vision research·2026
Same journal

Early visual processing in adults with ADHD: evidence from contrast sensitivity, spatial integration, and external noise.

Vision research·2026
Same journal

Pupil reflexes generate the peripheral drift illusion due to ON/OFF motion responses.

Vision research·2026
Same journal

Perceived direction of glass patterns can flip by 90°: A neural model.

Vision research·2026
See all related articles

The human visual system

Area of Science:

  • Visual Neuroscience
  • Human Visual System

Background:

  • The human visual system employs temporal filters for image processing.
  • Previous research suggests two temporal filters, with some evidence for a third sensitive to high frequencies.

Purpose of the Study:

  • To investigate the existence of a third temporal filter in human vision.
  • To determine if apparent improvements in high temporal frequency discrimination are genuine or an artifact.

Main Methods:

  • Experiments used suprathreshold counterphase gratings with varying stimulus durations (300 ms to 3 s).
  • Spatial frequencies tested were low (0.5 c/deg) and high (4 c/deg).
  • Participants were instructed to discriminate based on temporal frequency or perceptual fading.

Main Results:

Related Experiment Videos

  • Apparent improvements in high temporal frequency (30-40 Hz) discrimination were observed at longer durations but disappeared at shorter durations (≤300 ms).
  • This effect was consistent across different spatial frequencies.
  • Performance was significantly better when participants focused on perceptual fading cues, especially at high temporal frequencies and long durations.

Conclusions:

  • The perceived enhancement of high temporal frequency discrimination is likely an artifact of perceptual fading, not evidence of a distinct third temporal channel.
  • The duration of the stimulus significantly influences performance by affecting the availability of fading cues.
  • The existence of a third high-frequency temporal channel requires re-evaluation based on these findings.