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Einstein (São Paulo)

versão impressa ISSN 1679-4508versão On-line ISSN 2317-6385

Resumo

DIDONE, Dayane Domeneghini et al. Auditory evoked potential P300 in adults: reference values. Einstein (São Paulo) [online]. 2016, vol.14, n.2, pp.208-212. ISSN 1679-4508.  http://dx.doi.org/10.1590/S1679-45082016AO3586.

Objective

To establish reference intervals for cognitive potential P300 latency using tone burst stimuli.

Methods

This study involved 28 participants aged between 18 and 59 years. P300 recordings were performed using a two-channel device (Masbe, Contronic). Electrode placement was as follows: Fpz (ground electrode), Cz (active electrode), M1 and M2 (reference electrodes). Intensity corresponded to 80 dB HL and frequent and rare stimulus frequencies to 1,000Hz and 2,000Hz, respectively. Stimuli were delivered binaurally.

Results

Mean age of participants was 35 years. Average P300 latency was 305ms.

Conclusion

Maximum acceptable P300 latency values of 362.5ms (305 + 2SD 28.75) were determined for adults aged 18 to 59 years using the protocol described.

Palavras-chave : Evoked potentials, auditory; Event-related potentials, P300; Adult.

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