Visual Evoked Potentials and Event Related Potentials in Congenitally Deaf Subjects

Title:

Visual Evoked Potentials and Event Related Potentials in Congenitally Deaf Subjects

Creator:

Chlubnová, J., Kremláček, J. , Kubová, Z., and Kuba, M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:e9bcb08a-0289-480f-bdd2-2247bd9bad70
uuid:e9bcb08a-0289-480f-bdd2-2247bd9bad70

Subject:

sign language, Pattern-reversal VEPs, Motion VEPs, Event related potentials, and Deaf subjects

Type:

article, model:article, and TEXT

Description:

The purpose was to test parameters of visual evoked potentials (VEPs) and of event-related potentials (ERPs) in deaf subjects to verify visual and cognitive CNS functions in a handicapped group of the population. Three types of visual stimuli (with dominating parvocellular or magnocellular system activation or with cognitive tasks) were used in the study. Six deaf persons (4 women, 2 men, mean age 17 years) and 6 persons with normal hearing (sex- and age-matched) were included in this pilot study. In all types of stimulation, latencies and amplitudes of main VEPs and ERPs components were evaluated. No significant latency differences were found. However, significantly reduced amplitudes were found in the occipital area for responses to motion and cognitive stimuli which might be interpreted as a part of functional reorganization of the extrastriate and cognitive cortical areas of deaf subjects.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2005 Volume:54 | Number:6

Harvested from:

CDK

Metadata only:

false