In acute experiments on cats, electrical stimulation of the anterior limbic cortex was shown to modulate activity of vagal input neurones of the nucleus of the tractus solitarius. In the majority of the solitary tract nucleus neurones the responses induced by electrical stimulation of the vagus were depressed by the stimulation of anterior limbic cortex. Under these conditions the patterns of responses or their latency were changed. Our results are discussed with respect to possible mechanisms for cortical control of sensory transmission in the nucleus of the tractus solitarius.
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