Fig. 4From: 16-Channel biphasic current-mode programmable charge balanced neural stimulationBiphasic current stimulator model. Illustrate of the biphasic current stimulator pulse and the simplified electrode model. An anodic pulse is followed by an equal cathodic pulse with an opposite polarity charge. TF (train frequency) is used to define the time period between each biphasic current pulse. TD (time duration) represents how long the interval pulse will lastBack to article page