Abstract
This study was conducted to investigate the intra-subject consistency of the waveform
type and the size of the sympathetic skin response (SSR) evoked by different modalities
of stimulation. Thirty-eight normal volunteers were enrolled as subjects. SSRs were
obtained using three different modalities of stimulations: auditory (a-SSR), electrical
(e-SSR), and magnetic (m-SSR). Four stimuli of each modality were applied. The waveforms
were classified into two types, P (positive component larger the than negative component)
and N (vice versa). P-type waveforms were less frequent in the a-SSR than in the e-
and m-SSR. The occurrence of the respective waveforms and the values of maximum amplitudes
were significantly correlated among the SSRs evoked by different types of stimulation.
Judging from these results, the SSR waveforms and size seemed to be consistent in
individuals. The results also suggested that endogenous factors in an individual related
to the development of SSRs e.g., individual's emotional state, susceptibility to the
surprise effect, and anatomical characteristic were important determinants of the
SSR waveforms and maximum amplitude.
Keywords
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Article Info
Publication History
Published online: July 06, 2012
Accepted:
June 17,
2012
Received in revised form:
May 6,
2012
Received:
February 28,
2012
Identification
Copyright
© 2012 Elsevier B.V. Published by Elsevier Inc. All rights reserved.
