A comparative study of median nerve somatosensory evoked potential in the totally blind and normal subjects.
Indian J Physiol Pharmacol
;
2008 Apr-Jun; 52(2): 183-8
Article
Dans Anglais
| IMSEAR
| ID: sea-107156
ABSTRACT
The totally blind individuals are often considered to be compensated for their visual loss by augmentation in the auditory and tactile perceptions as against the normal sighted individuals. The objective of the present work was to study the somatosensory evoked potentials (SEPs) after median nerve stimulation in the wrist of totally blind and normal sighted individuals. SEPs were recorded after median nerve stimulation in the wrist of 15 Braille reading totally blind females and compared with 15 age matched normal sighted females. Latency and amplitudes of SEPs (N9, N13, and N20) were measured and analyzed statistically. Amplitude of N20 SEP was significantly larger in the totally blind than in normal sighted individuals (P < 0.05). The amplitudes of N9 and N13 SEPs and the latencies of all SEPs showed no significant differences. The congenitally blind individuals have larger N20 amplitude, suggestive of greater somatosensory cortical representation than normal sighted individuals.
Texte intégral:
Disponible
Indice:
IMSEAR (Asie du Sud-Est)
Sujet Principal:
Temps de réaction
/
Perception auditive
/
Femelle
/
Humains
/
Adaptation physiologique
/
Études cas-témoins
/
Cécité
/
Adulte
/
Stimulation électrique
/
Potentiels évoqués somatosensoriels
Type d'étude:
Étude observationnelle
langue:
Anglais
Texte intégral:
Indian J Physiol Pharmacol
Année:
2008
Type:
Article
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS