title: Inexpensive digital recorder for measuring the activity of mice.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D003365:Costs and Cost Analysis; D005260:Female; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D009043:Motor Activity; D010781:Photography; D010827:Physiology / Q000295:instrumentation*; D011589:Psychology, Experimental / Q000295:instrumentation*