... 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 al., 2009 ... and that wheel-running has been widely used in studying this behavior. However, the traditional method of examining food entrainment, using a running wheel in an LD environment, includes at least ... metham-phetamine (MA) into the drinking water of rats, andinducing a second free-running rhythm measured withrunning wheels whose period was proportional to thedose of methamphetamine, in addition...