Labyrinth exploration, emotional reactivity, and conditioned fear in young Roman/Verh inbred rats

R. M. Escorihuela; A. Fernández-Teruel; A. Tobeña; W. Langhans; K. Bättig; P. Driscoll

doi:10.1023/A:1021413200461

Labyrinth exploration, emotional reactivity, and conditioned fear in young Roman/Verh inbred rats

R. M. Escorihuela, A. Fernández-Teruel, A. Tobeña, W. Langhans, K. Bättig, P. Driscoll

Research output: Contribution to journal › Article › Research › peer-review

36 Citations (Scopus)

Abstract

An inbreeding program has been carried out with the Swiss sublines of Roman high-and low-avoidance rats since 1993. The present study reports the first experiments conducted with young animals of those inbred strains (RHA- I/Verh and RLA-I/Verh, respectively) from the sixth and seventh inbreeding generations. The results confirmed expected behavioral profiles. Compared to the RHA-I/Verh strain, RLA-I/Verh rats showed decreased entries into the illuminated central arena of an hexagonal tunnel maze, as well as decreased spontaneous locomotor activity and increased defecations, in two independent experiments. Young RLA-I/Verh females explored less than did their RHA- I/Verh counterparts during session 1 of a conditioned-fear experiment preceding shock administration, and in session 2 (conducted 24 h after the application of three footshocks), they showed greater conditioned behavioral inhibition (i.e., reduced amount of rearing), as well as higher defecation scores, than did RHA-I/Verh females.

Original language	English
Pages (from-to)	573-578
Journal	Behavior Genetics
Volume	27
Issue number	6
DOIs	https://doi.org/10.1023/A:1021413200461
Publication status	Published - 1 Dec 1997

Keywords

Conditioned fear
Emotionality
Exploratory activity
Roman/Verh inbred strains
Tunnel maze

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title = "Labyrinth exploration, emotional reactivity, and conditioned fear in young Roman/Verh inbred rats",

abstract = "An inbreeding program has been carried out with the Swiss sublines of Roman high-and low-avoidance rats since 1993. The present study reports the first experiments conducted with young animals of those inbred strains (RHA- I/Verh and RLA-I/Verh, respectively) from the sixth and seventh inbreeding generations. The results confirmed expected behavioral profiles. Compared to the RHA-I/Verh strain, RLA-I/Verh rats showed decreased entries into the illuminated central arena of an hexagonal tunnel maze, as well as decreased spontaneous locomotor activity and increased defecations, in two independent experiments. Young RLA-I/Verh females explored less than did their RHA- I/Verh counterparts during session 1 of a conditioned-fear experiment preceding shock administration, and in session 2 (conducted 24 h after the application of three footshocks), they showed greater conditioned behavioral inhibition (i.e., reduced amount of rearing), as well as higher defecation scores, than did RHA-I/Verh females.",

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author = "Escorihuela, {R. M.} and A. Fern{\'a}ndez-Teruel and A. Tobe{\~n}a and W. Langhans and K. B{\"a}ttig and P. Driscoll",

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T1 - Labyrinth exploration, emotional reactivity, and conditioned fear in young Roman/Verh inbred rats

AU - Escorihuela, R. M.

AU - Fernández-Teruel, A.

AU - Tobeña, A.

AU - Langhans, W.

AU - Bättig, K.

AU - Driscoll, P.

PY - 1997/12/1

Y1 - 1997/12/1

N2 - An inbreeding program has been carried out with the Swiss sublines of Roman high-and low-avoidance rats since 1993. The present study reports the first experiments conducted with young animals of those inbred strains (RHA- I/Verh and RLA-I/Verh, respectively) from the sixth and seventh inbreeding generations. The results confirmed expected behavioral profiles. Compared to the RHA-I/Verh strain, RLA-I/Verh rats showed decreased entries into the illuminated central arena of an hexagonal tunnel maze, as well as decreased spontaneous locomotor activity and increased defecations, in two independent experiments. Young RLA-I/Verh females explored less than did their RHA- I/Verh counterparts during session 1 of a conditioned-fear experiment preceding shock administration, and in session 2 (conducted 24 h after the application of three footshocks), they showed greater conditioned behavioral inhibition (i.e., reduced amount of rearing), as well as higher defecation scores, than did RHA-I/Verh females.

AB - An inbreeding program has been carried out with the Swiss sublines of Roman high-and low-avoidance rats since 1993. The present study reports the first experiments conducted with young animals of those inbred strains (RHA- I/Verh and RLA-I/Verh, respectively) from the sixth and seventh inbreeding generations. The results confirmed expected behavioral profiles. Compared to the RHA-I/Verh strain, RLA-I/Verh rats showed decreased entries into the illuminated central arena of an hexagonal tunnel maze, as well as decreased spontaneous locomotor activity and increased defecations, in two independent experiments. Young RLA-I/Verh females explored less than did their RHA- I/Verh counterparts during session 1 of a conditioned-fear experiment preceding shock administration, and in session 2 (conducted 24 h after the application of three footshocks), they showed greater conditioned behavioral inhibition (i.e., reduced amount of rearing), as well as higher defecation scores, than did RHA-I/Verh females.

KW - Conditioned fear

KW - Emotionality

KW - Exploratory activity

KW - Roman/Verh inbred strains

KW - Tunnel maze

U2 - 10.1023/A:1021413200461

DO - 10.1023/A:1021413200461

M3 - Article

SN - 0001-8244

VL - 27

SP - 573

EP - 578

JO - Behavior Genetics

JF - Behavior Genetics

IS - 6

ER -

Labyrinth exploration, emotional reactivity, and conditioned fear in young Roman/Verh inbred rats

Abstract

Keywords

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