About Bioline  All Journals  Testimonials  Membership  News

Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 30, No. 1, 2009, pp. 31-37
Bioline Code: zr09007
Full paper language: Chinese
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 30, No. 1, 2009, pp. 31-37

 en Effects of Abnormal Early Rearing Environments on Fear Memory in Adult Rats
Li, Chuan-yu; Zhang, Bo; Li, Zhen-bang; Huang, Fu-lian; Tian, Shao-wen & Hu, Xin-tian


In the present experiment, Pavlovian fear conditioning was adopted to study the effects of different early rearing environments on fear conditioning in adult rats. Weaned rats were reared in three manipulable environments (enriched, social and isolated conditions). After 8 weeks, fear conditioning (characterized by percentage of freezing) was observed and analyzed, and rats’ weight, locomoter activity and foot-shock sensitivity were operated too. The results showed that: (1) Compared with control group, the level of conditioned fear was significantly increased in enriched group, but significantly decreased in isolated group; (2) Enriched and isolated conditions influenced rat’s weight significantly; (3) Different rearing conditions have no effect on locomoter activity and foot-shock sensitivity. These results indicated that early enriched condition could improve the tone-evoked fear conditioning response, while isolated condition impaired the response.

Fear conditioning Freezing Enriched condition Isolated condition Locomoter activity Foot-shock sensitivity

© Copyright 2009 Kunming Institute of Zoology, the Chinese Academy of Sciences
Alternative site location:

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2024, Site last up-dated on 01-Sep-2022.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Google Cloud Platform, GCP, Brazil