title: An inexpensive, enclosed pool mercury commutator suitable for use with small animals.
abstract: An electrical coupling device that utilizes small, enclosed mercury pools is described. This commutator is of small size, low torque, relatively noise-free, and controls possible mercury spillage. It is constructed of readily available, inexpensive materials, and requires no precision machining for assembly.
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology; D002540:Cerebral Cortex / Q000502:physiology; D004569:Electroencephalography / Q000295:instrumentation*; D005071:Evoked Potentials; D008628:Mercury; D051379:Mice; D051381:Rats
chemical_list: D008628:Mercury