Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9406668 | Behavioural Brain Research | 2005 | 6 Pages |
Abstract
Results revealed that stereotypy horses had significantly higher (PÂ <Â 0.05) dopamine D1 and D2 receptor densities (Bmax) in the nucleus accumbens compared to non-stereotypy controls. D1 receptor densities (Bmax) and D2 receptor affinity (Kd) were also significantly lower in the caudate nucleus brain region of stereotypy horses (PÂ <Â 0.05). No other significant results were observed. These results demonstrate that stereotypy horses have increased activity within the mesoaccumbens dopamine pathway and, thus, that the development of environmentally-induced stereotypy may be associated with changes in motivational systems within the animal.
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Authors
S.D. McBride, A. Hemmings,