Perceptions and electric senoidal current stimulation.
OBJECTIVE
To analyze the relationship between perceptions and electrical senoidal current stimulation (ESCS).


METHODS
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 presented 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 scores.


CONCLUSIONS
These results show that there is a relation between different sensations and ESCS of different frequencies.
Pimentel
Julia Manzano
JM
Neurology and Neurosurgery Department, Federal University of São Paulo, São Paulo, SP, Brazil.
Petrillo
Renata
R
Vieira
Mirna Migliacci F
MM
Giuliano
Lydia Maria Pereira
LM
Tierra-Criollo
Carlos Julio
CJ
Braga
Nadia Iandoli de Oliveira
NI
Nóbrega
João Antonio Maciel
JA
Manzano
Gilberto Mastrocola
GM
D000293:Adolescent; D000328:Adult; D004056:Differential Threshold; D004558:Electric Stimulation / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009412:Nerve Fibers / Q000502:physiology*; D010525:Peripheral Nerves / Q000502:physiology*; D010523:Peripheral Nervous System Diseases / Q000175:diagnosis; D010865:Pilot Projects; D012684:Sensory Thresholds / Q000502:physiology*