[P300 event-related potentials in stutterers pre and post treatment: a pilot study].
BACKGROUND
P300 event-related potential has been used as an instrument to establish the diagnosis of several disorders as well as to assess therapeutic outcomes.


OBJECTIVE
to investigate the relationship between stuttering amelioration and cerebral activity.


METHODS
P300 event-related potentials were obtained in three adult males, all stutterers, aged 20 to 31 years, pre and post-treatment, verifying changes in wave amplitude and latency between waves.


RESULTS
results indicate a significant positive correlation between the reduction in the percentage of stuttered syllables and the improvement in wave amplitude for the right ear.


CONCLUSIONS
stutterers can exhibit different patterns of interhemispheric activity with a tonal P300 task after undergoing a fluency-enhancing program.
Andrade
Claudia Regina Furquim de
CR
Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional, Faculdade de Medicina, Universidade de São Paulo, São Paulo. clauan@usp.br
Sassi
Fernanda Chiarion
FC
Matas
Carla Gentile
CG
Neves
Ivone Ferreira
IF
Martins
Vanessa Oliveira
VO
D000328:Adult; D001921:Brain / Q000502:physiology*; D002540:Cerebral Cortex; D004558:Electric Stimulation; D018913:Event-Related Potentials, P300 / Q000502:physiology*; D005072:Evoked Potentials, Auditory / Q000502:physiology; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D010865:Pilot Projects; D013060:Speech / Q000502:physiology; D013067:Speech Perception / Q000502:physiology; D013070:Speech Therapy; D013342:Stuttering / Q000503:physiopathology* / Q000628:therapy