title: A METHOD FOR CARDIAC RECORDING FROM SURFACE ELECTRODES IN THE RAT DURING FREE-OPERANT PROCEDURES.
mesh_terms: D004562:Electrocardiography; D004566:Electrodes; D004864:Equipment and Supplies; D007858:Learning; D051381:Rats; D012106:Research
keywords: ELECTROCARDIOGRAPHY; EQUIPMENT AND SUPPLIES; EXPERIMENTAL LAB STUDY; LEARNING; RATS