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What exactly does "skin conductance" measure??

Larry Brash lbrash at ozemail.com.au
Wed May 14 07:49:46 EST 1997


Nate wrote:
> 
> I've been doing a good deal of reading/research about stress responses
> lately and aside from measures of HR, BP, Cortisol, etc, skin conductance
> also often comes up.
> 
> First of all, is this the same as galvanic skin response?  If not then what
> is GSR?

Yes, I believe it is the same
> 
> And secondly, what is/are the underlying mechanism(s) this is measuring?
> (eg, sympathetic, parasympathetic, etc?)

Sympathetic arousal. When we are anxious, fearful, our hands sweat.
Sweat contains salt which increases conductance and can be measured

Larry Brash              
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