-Objective: To analyze the relationship between perceptions and electrical senoidal curre n t stimulation (ESCS). Method: The study population comprise 100 healthy volunteers. ESCS of 5 Hz and 2 kHz were applied to the left index finger at one and 1.5 sensory threshold. Following each stimulus train a list of eight words (four related to thin fiber sensations and four related to thick fiber sensations) was p resented to the subjects who were asked to choose the three words closer to the experienced sensation. Each chosen word was given a score 1; final results were obtained by the sum of the scores for the words related to thin and thick fiber systems for each situation. Results: For 5 Hz ESCS at one and 1.5 sensory threshold thin fibers had significantly higher scores than thick fibers; for 2 kHz ESCS, thick fibers had significantly higher score s . Conclusion: These results show that there is a relation between diff e rent sensations and ESCS of different frequencies.KEY WORDS: peripheral nerve, electric stimulation, senoidal currents, sensations, perceptions. Percepções e estimulações elétricas por correntes senoidaisRESUMO -Objetivo: Estudar a relação entre as sensações evocadas por estimulação elétrica por corre n t e senoidal (ESCS). Método: 100 voluntários normais foram estudados. ESCS a 5 Hz e 2 kHz foram aplicadas no dedo indicador esquerdo com uma e 1,5 vezes o limiar sensorial. Listas de oito palavras (4 re l a c i o n a d a s a fibras grossas, 4 a fibras finas) foram apresentadas após cada estimulação e foi solicitado que o sujeito escolhesse as 3 palavras que mais se aproximassem das sensações experimentadas. Às palavras escolhidas foi dado o escore 1. Os resultados finais para análise foram obtidos da soma dos escores para as palavras relacionadas aos diferentes sistemas de fibras. Resultados: Para ESCS a 5 Hz sensações relacionadas a fibras finas foram significantemente mais escolhidas, já para estimulações a 2 kHz sensações relacionadas a fibras g rossas foram significantemente mais escolhidas. Conclusão: Estes resultados mostram um relação entre diferentes percepções e diferentes freqüências de correntes elétricas senoidais.
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