Impaired grating discrimination following right hemisphere damage
Related Experiment Video
Updated: Oct 14, 2026

The Dig Task: A Simple Scent Discrimination Reveals Deficits Following Frontal Brain Damage
Published on: January 4, 2013
A Grabowska1, C Semenza, G Denes
1Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland.
Abstract:
We investigated the effect of unilateral brain lesions on visual discrimination of low-, middle- and high-frequency gratings. The performance of patients with right hemisphere lesions was significantly impaired compared with that of both controls and patients with left hemisphere lesions. This impairment was largely limited to patients with right posterior hemispheric lesions and was present with all spatial frequencies. These findings run counter to the hypothesis that high and low spatial frequencies are preferentially processed by different hemispheres.
More Related Videos
12:23Dynamic Visual Tests to Identify and Quantify Visual Damage and Repair Following Demyelination in Optic Neuritis Patients
Published on: April 14, 2014
04:54Modified Mouse Model of Repetitive Mild Traumatic Brain Injury Incorporating Thinned-Skull Window and Fluid Percussion
Published on: April 19, 2024
Related Concept Videos
Somatosensation
Cerebral Hemispheres
Lateralization
Visual Agnosia
Prosopagnosia