[Hemispheric differences in visual evoked potentials during the discrimination of consonants and signs].
Visual evoked responses were recorded in response to a series of consonants and non-linguistic signs randomly presented. We compared, with a sample of 16 young volunteers, P300 and N400 latency and amplitude in order to detect possible asymmetries. Results in amplitude showed a significant asymmetry within right hemisphere, both in P300 and N400 components. Latency results failed to present any significant difference during the discrimination of consonants, while non-linguistic signs discrimination reflect an asymmetrical tendency in P300 component.
Ortiz
T
T
Departamento de Psicobiología, Universidad Complutense, Madrid.
Fernández
A
A
García de León
M
M
D000328:Adult; D001921:Brain / Q000502:physiology; D004192:Discrimination, Psychological / Q000502:physiology*; D004292:Dominance, Cerebral; D004569:Electroencephalography; D005074:Evoked Potentials, Visual; D006801:Humans; D011930:Reaction Time; D011932:Reading
Diferencias hemisféricas en potenciales evocados visuales durante la discriminación de consonantes y de signos.