Title :
Practical considerations for the use of a Howland current source for neuro-stimulation
Author :
Pouliquen, Philippe ; Vogelstein, Jacob ; Etienne-Cummings, Ralph
Author_Institution :
Electr. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD
Abstract :
We analyze the Howland current source circuit topology in detail with regards to non-ideal circuit component properties. This circuit is one of the few which can be built with a small number of discrete components, offers very good performance due to the use of an operational amplifier, and supplies true symmetric bi-directional currents, and is hence well suited for use in the multi-channel electrical stimulation of nerve fibers and neurons.
Keywords :
bioelectric phenomena; constant current sources; neurophysiology; operational amplifiers; Howland current source; bidirectional currents; circuit topology; multichannel electrical stimulation; nerve fibers; neurons; neurostimulation; operational amplifier; Assembly; Circuit analysis computing; Circuit topology; Electrical stimulation; Jacobian matrices; Laboratories; Microcontrollers; Microelectrodes; Neuroscience; Physics computing;
Conference_Titel :
Biomedical Circuits and Systems Conference, 2008. BioCAS 2008. IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-2878-6
Electronic_ISBN :
978-1-4244-2879-3
DOI :
10.1109/BIOCAS.2008.4696867
