HCRT and Cataplexy: A preliminary FECT study was necessary to confirm that classical conditioning of an acoustic stimulus with a salient food reward would not potentially confound a study of awakening from sleep, as strong emotional salience as seen with food anticipation is a primary trigger of cataplexy in orexin-deficient narcoleptic dogs (Babcock et al., 1976; Kushida et al., 1985; Nishino et al., 1997).