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Striatal influence on ingestive behaviour in the cat.

G Gravante, F Sorbera, M Sabatino

Behavioural Brain Research

|July 1, 1985

Summary

Low-frequency stimulation of basal ganglia structures, including the caudate nucleus, substantia nigra, and globus pallidus, significantly reduced feeding behavior in cats. Effects were temporary, with normal feeding resuming post-stimulation.

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Area of Science:

Neuroscience
Behavioral Science
Animal Studies

Background:

The basal ganglia play a crucial role in motor control and behavior.
Understanding the neural mechanisms of feeding behavior is essential for addressing eating disorders.

Purpose of the Study:

To investigate the effects of stimulating specific basal ganglia nuclei on feeding behavior in freely moving cats.
To explore the role of the caudate nucleus, substantia nigra, and globus pallidus in regulating food intake.

Main Methods:

Chronic electrode implantation in freely moving cats.
Low-frequency, long-duration electrical stimulation of the caudate nucleus, substantia nigra, and globus pallidus.
Quantification of food intake before, during, and after stimulation.

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Main Results:

Stimulation of all three basal ganglia structures significantly reduced food intake.
Globus pallidus stimulation resulted in a complete block of feeding behavior.
All observed effects were transient and limited to the stimulation period, with normal feeding recovery post-stimulation.

Conclusions:

The basal ganglia, particularly the globus pallidus, are critically involved in the control of feeding behavior.
Reciprocal connections between the basal ganglia and hypothalamus likely mediate these effects.
The striatum's role in movement selection may be implicated in feeding regulation.