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Somatovisceral reflexes

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  • 1Tokyo Metropolitan Institute of Gerontology, Japan.

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|November 1, 1995
PubMed
Summary
This summary is machine-generated.

Somatic afferent stimulation in animals causes sympathetic nervous system changes affecting organs. Further physiological studies are needed before applying these findings to clinical situations.

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Area of Science:

  • Neuroscience
  • Physiology

Background:

  • Somatic afferent nerves transmit sensory information, including pain and touch.
  • Stimulation of these nerves can influence the sympathetic nervous system's activity.

Purpose of the Study:

  • To investigate the reflex changes in sympathetic efferent activity evoked by somatic afferent stimulation in experimental animals.
  • To explore the impact of such reflexes on effector organ function.

Main Methods:

  • Experimental stimulation of various somatic afferents (cutaneous, muscle, articular, spinal).
  • Monitoring of sympathetic efferent activity and effector organ responses.

Main Results:

  • Both noxious and innocuous somatic afferent stimulation elicited reflex sympathetic changes.
  • These reflexes were observed in multiple organ systems, including the gastrointestinal tract, urinary bladder, adrenal medulla, lymphatic tissues, heart, and blood vessels.
  • Reflex responses showed complexity, integration of influences, laterality, segmental tendencies, and variable excitability.

Conclusions:

  • Somatic afferent stimulation significantly impacts sympathetic efferent activity and organ function in animals.
  • The complexity of these reflexes necessitates further systematic physiological research before clinical extrapolation.