Hemispheric differences in visual evoked potentials during the discrimination of consonants and signs | Diferencias hemisféricas en potenciales evocados visuales durante la discriminación de consonantes y de signos.

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Publication Details

Author list: Ortiz, T., Fernández, A., García de León, M.
Publisher: Fundación Archivos de Neurobiologia
Publication year: 1991
Volume number: 54
Issue number: 5
Start page: 223
End page: 228
Number of pages: 6
ISSN: 0004-0576
Languages: Spanish-Spain (ES-ES)


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.


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