[Features of a passive avoidance extinction of mice with a different level of anxiety].
The dependence of the passive avoidance extinction from a level of mice initial anxiety is investigated. Mice were classified as high-, medium- and low-anxious by time spent in the open area of the elevated plus-maze. It is revealed that to each from levels of anxiety there corresponds certain dynamics of extinction. The high-anxious mice are characterized absence of the passive avoidance extinction and stability of good retrieval of memory trace for want of testing down to 15 days. At medium-anxious mice the deficit of avoidance habit performance developed since the 7th day of extinction. At low-anxious mice since the 11th day of testing the deterioration of retrieval was observed.
Dubrovina
N I
NI
Tomilenko
R A
RA
D000818:Animals; D001007:Anxiety / Q000523:psychology*; D001362:Avoidance Learning / Q000502:physiology*; D003214:Conditioning, Classical / Q000502:physiology*; D005108:Extinction, Psychological / Q000502:physiology*; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL