Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Human contrast sensitivity: regional retinal differences.

Human Neurobiology

|January 1, 1985

Summary

This summary is machine-generated.

Contrast sensitivity is higher in the fovea than the periphery. The upper retina shows greater sensitivity across all spatial frequencies compared to the lower retina.

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

Abstracts of Presentations at the International Conference on Basic and Clinical Multimodal Imaging (BaCI), a Joint Conference of the International Society for Neuroimaging in Psychiatry (ISNIP), the International Society for Functional Source Imaging (ISFSI), the International Society for Bioelectromagnetism (ISBEM), the International Society for Brain Electromagnetic Topography (ISBET), and the EEG and Clinical Neuroscience Society (ECNS), in Geneva, Switzerland, September 5-8, 2013.

Clinical EEG and neuroscience·2013

Same author

Sustained cortical potentials evoked in humans by binocularly correlated, uncorrelated and disparate dynamic random-dot stimuli.

Neuroscience letters·2009

Same author

Topography of spectral EEG and late VEP components in patients with benign rolandic epilepsy of childhood.

Journal of neural transmission (Vienna, Austria : 1996)·2004

Same author

Dimensions of affective semantic meaning--behavioral and evoked potential correlates in Chinese subjects.

Neuroscience letters·2003

Same author

Rapid extraction of emotional expression: evidence from evoked potential fields during brief presentation of face stimuli.

Neuropsychologia·2003

Same author

The processing of stereoscopic information in human visual cortex: psychophysical and electrophysiological evidence.

Clinical EEG (electroencephalography)·2001

Area of Science:

Ophthalmology
Visual Neuroscience
Retinal Physiology

Background:

Contrast sensitivity is a key measure of visual function.
Understanding regional differences in the retina is crucial for diagnosing visual impairments.

Purpose of the Study:

To compare contrast sensitivity functions between foveal and perifoveal retinal regions.
To investigate differences in contrast sensitivity between the upper and lower hemiretinas.

Main Methods:

Measured contrast sensitivity functions in 20 subjects.
Evaluated foveal, perifoveal, upper, and lower hemiretinal areas.
Analyzed sensitivity across various spatial frequencies.

Main Results:

Related Experiment Videos

Foveal stimuli demonstrated higher contrast sensitivity and a shift towards higher spatial frequencies compared to perifoveal stimuli.

The upper hemiretina exhibited significantly higher sensitivity than the lower hemiretina across all tested spatial frequencies.

Statistical analysis confirmed significant regional differences in visual acuity and hemiretinal function.

Conclusions:

The fovea is critical for high-resolution vision.
Significant functional asymmetries exist between the upper and lower hemiretinas.
These findings highlight distinct regional processing capabilities within the human retina.