GoFlow - World's First tDCS Kit. tDCStim : Message: Re: [tDCStim] tDCS info resource. Hi Sam, Thanks for the information, although our Chattanooga didn't automatically ramp -- we had to do it manually.
![tDCStim : Message: Re: [tDCStim] tDCS info resource](http://cdn.pearltrees.com/s/pic/th/yahoo-groups-82080063)
Also, I'm not sure why a sudden drop in current would lead to a very salient metallic taste. Regardless, we've updated to a different device that is specifically designed for tDCS rather than iontophoresis, so it's not a problem any more. But this may be of interest to others using the Chattanooga! Thanks! Transcranial direct current stimulation - tDCS [brmlab] Transcranial direct current stimulation is a type of nonivasive cortical modulations technique witch use low DC current in order 25-80uA/cm2(more in HD-tdcs) via skalp electrodes to change resitng potentials of neurones.This chanages depend of polarity of stimulation = orintation od el. field to the neurones,the anodal (+) stimulation increases the neuronal excitability and Cathodal (-) neuronal excitability.When positive stimulation causes a depolarization of the resting membrane potential, which increases neuronal excitability and allows for more spontaneous cell firing.
![Transcranial direct current stimulation - tDCS [brmlab]](http://cdn.pearltrees.com/s/pic/th/transcranial-stimulation-22877474)
When negative stimulation is delivered, the current causes a hyperpolarization of the resting membrane potential. Safety considerations for tDCS.