Effects of chronic dysthyroidism on activity and exploration

The aim of the present study was to determine the influence of thyroid function on the activity and exploratory behaviour of male Wistar rats. Dysthyroidism was induced by adding drugs to their drinking water from the ninth day of gestation. This method is not as stressful as daily thyroxine injecti...

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Veröffentlicht in:Physiology & behavior 2002-09, Vol.77 (1), p.125-133
Hauptverfasser: Sala-Roca, Josefina, Martı́-Carbonell, Maria Assumpció, Garau, Adriana, Darbra, Sonia, Balada, Ferran
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container_end_page 133
container_issue 1
container_start_page 125
container_title Physiology & behavior
container_volume 77
creator Sala-Roca, Josefina
Martı́-Carbonell, Maria Assumpció
Garau, Adriana
Darbra, Sonia
Balada, Ferran
description The aim of the present study was to determine the influence of thyroid function on the activity and exploratory behaviour of male Wistar rats. Dysthyroidism was induced by adding drugs to their drinking water from the ninth day of gestation. This method is not as stressful as daily thyroxine injections or thyroidectomy, and therefore did not affect the analysed behavioural patterns. After weaning, the drugs were administered to the young rats until the end of the experiment. Activity and exploration were measured using the Boissier test, a light–darkness test and an open-field test when they were 77 days old. In order to verify that the animals' motor capacity had not been impaired, a psychomotor battery was used. Chronic hyperthyroidism produced a significant increase in activity, but did not affect exploration. On the other hand, hypothyroidism did not affect activity, but did increase exploration. This increase in exploration was observed in activity-independent behavioural parameters, such as head dipping and glancing.
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source MEDLINE; Elsevier ScienceDirect Journals
subjects Activity
Anatomical correlates of behavior
Animals
Behavioral psychophysiology
Biological and medical sciences
Chronic Disease
Exploration
Exploratory Behavior
Female
Fundamental and applied biological sciences. Psychology
Hyperthyroidism
Hyperthyroidism - blood
Hyperthyroidism - physiopathology
Hyperthyroidism - psychology
Hypothyroidism
Hypothyroidism - blood
Hypothyroidism - physiopathology
Hypothyroidism - psychology
Male
Methimazole
Motor Activity
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Rat
Rats
Rats, Wistar
Thyroxine
Thyroxine - blood
title Effects of chronic dysthyroidism on activity and exploration
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