[Manifestation of fear response in rats genetically predisposed to various kinds of defense behavior].
Acoustic startle response in rats bred for 40 generations of Wistar stock for predisposition to catalepsy, was two-fold higher than in control Wistar rats. In wild Norway rats bred for absence of aggressiveness, the acoustic startle response manifested a three-fold lower amplitude than in aggressive rats. As opposed to tame rats, the startle response reduction in 4 trials was insignificant in wild-type rats. No trend towards reduction of the response was found in cataleptic rats. Genetically determined predisposition to a defensive behaviour seems to be associated with increased manifestation of fear.
Popova
N K
NK
Institute of Cytology and Genetics, Russian Acad. Sci., Siberian Branch, Novosibirsk, Russia.
Barykina
N N
NN
Pliusnina
I Z
IZ
Alekhina
T A
TA
Kolpakov
V G
VG
D000161:Acoustic Stimulation; D000374:Aggression; D000818:Animals; D002375:Catalepsy / Q000235:genetics / Q000503:physiopathology*; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D012018:Reflex; D013216:Reflex, Startle / Q000502:physiology*; D012641:Selection, Genetic
Ekspressia reaktsii ispuga u krys, geneticheski predraspolozhennykh k raznym vidam zashchitnogo povedeniia.