| Titel: | Middle latency auditory evoked potentials in congenitally blind and normal sighted subjects |
|---|---|
| Autor: | Naveen, KV Srinivas, RS Nirmala, KS Nagendra, HR Telles, S |
| Mediengruppe: | journal article |
| Herausgeber: | --- |
| Zeitschrift: | International Journal of Neuroscience |
| Jahr: | 1997 |
| Band: | 90 |
| Heft: | 1 - 2 |
| Seiten: | 105 - 111 |
| Sprache: | englisch |
| Abstract: | Compared peak latencies and amplitudes of middle latency auditory evoked potential (AEP-MLR) components in 10 congenitally blind Ss (mean age 14.3 yrs) and 10 age-matched normal-sighted Ss. Ss were also compared on peak amplitudes of AEP-MLR components recorded from the conventional site (i.e., vertex) with recordings made from posterior brain areas (i.e., occiput). The Nb wave peak latency was significantly lower in blind Ss than in normal-sighted Ss. The peak amplitude of the Pa wave was significantly lower in blind Ss than in normal-sighted Ss when the recording was made from the occipital area. There was no obvious difference in threshold of hearing between the 2 groups. Results suggest that the occipital area does not play a role in auditory information processing at primary cortical ares in congenitally blind persons. (PsycINFO Database Record (c) 2002 APA, all rights reserved) |