[Is holding on to a lever by a rat a preparatory reaction?].
D000818:Animals; D001362:Avoidance Learning; D001522:Behavior, Animal; D003116:Color; D003216:Conditioning, Operant; D004597:Electroshock; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains
Iavliaetsia li uderzhivanie rychaga u krys podgotovitel'noĭ reaktsieĭ?