Unconditioned anxiety and social behaviour in two rat lines selectively bred for high and low anxiety-related behaviour

被引:112
作者
Henniger, MSH [1 ]
Ohl, F [1 ]
Hölter, SM [1 ]
Weissenbacher, P [1 ]
Toschi, N [1 ]
Lörscher, P [1 ]
Wigger, A [1 ]
Spanagel, R [1 ]
Landgraf, R [1 ]
机构
[1] Max Planck Inst Psychiat, D-80804 Munich, Germany
关键词
emotionality; elevated plus-maze; black-white box; social interaction test; home cage behaviour;
D O I
10.1016/S0166-4328(00)00151-0
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Individuals of high anxiety-related behaviour (HAB) and low anxiety-related behaviour (LAB) rat lines were selectively bred for differences in anxiety-related behaviour on the elevated plus-maze. The goal of this study was to investigate whether this behavioural difference is restricted to the test used as the selection criterion or whether it is a stable and robust trait also in other conflict or non-conflict situations. Therefore, behaviour of male and female HAB and LAB rats was examined in two further tests of unconditioned anxiety: the black-white box and the social interaction test. Furthermore, behaviour of group-housed male HAB and LAB rats was studied in their home cages. In addition to standard statistics, discriminant analyses were performed. The difference in anxiety-related behaviour between the two lines was highly consistent in all tests of unconditioned anxiety. There were also differences in home cage behaviour, LAB rats being more active than HAB rats; this is likely to be a consequence of the LAB rats displaying a higher aggressiveness in social behaviour, compared to HAB rats. In all tests used HAB and LAB rats were clearly distinguished by discriminant analysis. However, while in the elevated plus-maze and the black-white box test the most important parameters for discrimination between the two lines were mainly those generally seen as closely related to anxiety, the discrimination in the social interaction paradigm was primarily due to differences in locomotor activity. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:153 / 163
页数:11
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