[Neuroscience] Re: Constant Current Vs. Constant Voltage stimulators.

Christian Wilms via neur-sci%40net.bio.net (by usenet02 from out-of-phase.de)
Thu Feb 22 07:20:34 EST 2007

> Why would you use a constant current, vs a constant voltage stimulator
> (or vice versa) for exciting nervous tissue?

My (admittedly simple) understanding is that the current output is less
dependent on changes in the resistance of the stimulating electrode. As
we use microelectrodes (glass) for stimulating, changes in pipette
resistance during longer experiments does present a possible problem.

Anybody have a more throrough explaination?

All the best, Christian 

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