Key result
Different responses to visceral stimuli were observed in three zones of the rostral spinal cord (C3-C6, C7-C8, and T1-T6), with varying excitatory and inhibitory effects from sympathetic afferents.
Population
89 spinothalamic tract (STT) neurons in segments C3-T6 of the monkey
Design
Preclinical
Authors
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Maps segmental visceral inputs in primate spinal cord; extends basic mapping but leaves open human translation to referred pain.
This preclinical study maps the segmental organization of visceral and somatic inputs onto spinothalamic tract neurons in monkeys, providing a neurophysiological basis for referred visceral pain.
Hobbs et al. (1992) studied Referred pain of visceral origin (n=89). Visceral and somatic stimuli was evaluated on Responses of spinothalamic tract neurons to visceral and somatic stimuli. Different responses to visceral stimuli were observed in three zones of the rostral spinal cord (C3-C6, C7-C8, and T1-T6), with varying excitatory and inhibitory effects from sympathetic afferents.
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