Machula A I, Barkov N K, Fisenko V P
Farmakol Toksikol. 1980 Jan-Feb;43(1):16-9.
It was shown in cats by the method of conditioned defensive reflexes that phenamine (0.5 mg/kg), sydnocarb (3 mg/kg) and katinon (1 mg/kg) accelerate realization of the conditioned defensive reflex, but abolish the differentiation of visual stimuli. While producing a similar effect, cocolen (1 mg/kg) does not abolish the differentiation of visual stimuli.