Lesions of the pedunclopontine tegmental nucleus increase anxiety in rats.

Abstract:

:To test the hypothesis that the pedunclopontine tegmental nucleus (PPTg) plays a role in anxiety, rats with electrolytic lesions of the PPTg were tested in two animal models of anxiety, the elevated plus maze and the social interaction tests. Histological analysis showed that lesions were concentrated on the caudal half of the PPTg. In the elevated plus maze, traditional as well as 'risk assessment' measures indicated significantly increased anxiety in the PPTg-lesioned rats vs sham-operated controls. In the social interaction test, behavioural scores were biased towards elevated anxiety in the PPTg-lesioned rats but only the number of social sniffs reached significance. Our results confirm that electrolytic lesions of the caudal PPTg produce increased anxiety.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Podhorna J,Franklin KB

doi

10.1097/00001756-199806010-00020

subject

Has Abstract

pub_date

1998-06-01 00:00:00

pages

1783-6

issue

8

eissn

0959-4965

issn

1473-558X

journal_volume

9

pub_type

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