title: Lightweight, multi-contact, slip-ring commutator for recording and stimulation with small animals.
abstract: A slip-ring commutator which can be used to electrically stimulate and/or record from the brains of small, unrestrained animals is described. In addition to providing 4 to 10 independent electrical contacts, featues of this model include its small size, low torque characteristics, low rate of contact oxidation, and minimal noise generated at the brush-ring surface. The compactness and light weight of this unit permit it to be suspended from a counterweighted boom assembly, thus providing additional freedom for vertical movement.
mesh_terms: D000818:Animals; D004558:Electric Stimulation / Q000295:instrumentation*; D004569:Electroencephalography / Q000295:instrumentation*; D004582:Electronics, Medical