... LD only Motion sensor Yes, 51 hrs after RF Yes, increased activity in RFLandry et al., 2007 (4) electrolytic LD only Motion sensor Yes, 72 hrs after RF Yes, increased activity in RFMoriya et ... and active, engaging in wheel-running and increased drinking of further MA, and further wheelrunning, until the animals are exhausted and sleep (at which point they stop drinking MA for a while).This ... metham-phetamine (MA) into the drinking water of rats, and inducing a second free-running rhythm measured withrunning wheels whose period was proportional to thedose of methamphetamine, in addition...