title: Design for an inexpensive unit for measuring tail flick latencies.
abstract: A reflex action timer for use in rat tail flick tests is described. This timer utilizes a photoelectric sensor to detect reaction times accurately. It was designed to avoid the sensing groove required in some other such units, can be used as a chronometer/controller in a number of other experimental paradigms, and can be built at low cost.
mesh_terms: D000818:Animals; D004582:Electronics, Medical / Q000295:instrumentation*; D051381:Rats; D011930:Reaction Time; D012018:Reflex; D013623:Tail / Q000502:physiology*