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Author | Rizhova, L.Y.; Kulagin, D.A. | ||||
Title | The effects of corticosteroids on lateral bias in female rats | Type | Journal Article | ||
Year | 1994 | Publication | Behavioural Brain Research | Abbreviated Journal | Behav. Brain. Res. |
Volume | 60 | Issue | 1 | Pages | 51-54 |
Keywords | Corticosterone; Lateral preference; Estrus cycle; Asymmetry | ||||
Abstract | In Experiment 1 female rats were given one trial per day for 8 days in a T-maze, and their initial direction of choice (left/right) was noted. Vaginal smears were also obtained daily. After this some animals were adrenalectomized and given Ringer's solution; others were adrenalectomozed and given hydrocortisone replacement; a third group was sham adrenalectomized, and a fourth group was an intact control. A week after surgery the animals were again tested for 8 days in the T-maze and vaginal smears were obtained. In Experiment 2 rats were subjected to the same surgical treatments as described above and were then tested for 8 days in the T-maze. In Expt. 1 there was no direction bias among the four groups prior to surgery. However, after surgery the Adrenalectomy + Ringer's group showed a significant increase in their rightward choices in the T-maze. This was also found in Expt. 2. Both adrenalectomized groups in Expt. 1 had a significant reduction in the duration of the estrus phase of their cycle. We conclude that corticosterone can affect lateral preference in a T-maze through a mechanism independent of the hormonal changes involved in the estrus cycle. | ||||
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Language | Summary Language | Original Title | |||
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ISSN | 0166-4328 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Equine Behaviour @ team @ | Serial | 5349 | ||
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