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Intrahypothalamic noradrenaline injection in the rat enhances operant licking but not lever pressing for milk reward

journal contribution
posted on 2023-06-08, 22:23 authored by J W Matthews, D A Booth, I P Stolerman
Injection of noradrenaline into the hypothalamus of the rat produces poor performance of lever pressing for liquid food reinforcement at moderate ratio values, even though such injection facilitates intake of liquid food available without an operant requirement. The present work shows that a tube-licking operant response was more facilitated and less suppressed by noradrenaline than a lever-pressing response. Noradrenaline produced rear-limb ataxia which might have affected lever pressing more than licking, but results of manipulating the height of the tube suggested that this was unlikely. It is concluded that the operant performance deficit is more evident with lever pressing than with a response naturally involved in ingestion.

History

Publication status

  • Published

Journal

Appetite

ISSN

0195-6663

Publisher

Elsevier

Issue

4

Volume

7

Page range

355-364

Department affiliated with

  • Psychology Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2015-09-04

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