Key result
Repetitive glabellar electrical stimulation is linked to increased variability in sympathetic skin response symmetry.
Why the study?
The symmetry of sympathetic skin response (SSR) in healthy subjects and its changes during repetitive SSR testing and habituation have not been well established.
Observational (n=20)
In healthy subjects, the variability of sympathetic skin response symmetry increases as the mean amplitude decreases during habituation to repetitive electrical stimulation.
Should not alter clinical SSR testing; leaves open habituation effects on symmetry in patient populations.
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Wei-Ting Wu (2006) conducted an observational in Healthy subjects (n=20). Repetitive electrical stimulation to the glabella was evaluated on Symmetry of sympathetic skin response (amplitude ratio of left-to-right palmar response) (p=0.002). Repetitive electrical stimulation to the glabella in healthy subjects increased the variability of sympathetic skin response symmetry as the mean amplitude decreased (p=0.002).
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