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Updated: Jul 13, 2026
11:56
Training Rats to Voluntarily Dive Underwater: Investigations of the Mammalian Diving Response
Published on: November 12, 2014
Mechanism of the human diving response
1Department of Physiology and Pharmacology, Queen's Medical Centre, University of Nottingham, U.K.
Summary
The human diving response involves breath-holding, slowed heart rate (diving bradycardia), and altered blood flow, triggered by facial water immersion and breathing cessation. This physiological reaction is regulated by the brain stem and influenced by factors like water temperature.
Area of Science:
- Physiology
- Human Diving Response
Background:
- The human diving response is a complex physiological reaction.
- It involves breath-holding, bradycardia, altered limb blood flow, and increased blood pressure.
Purpose of the Study:
- To describe the physiological characteristics of the human diving response.
- To explain the underlying neural mechanisms and modifying factors.
Main Methods:
- The abstract does not specify methods but describes observed physiological changes.
- It infers nervous system coordination based on known physiological responses.
Main Results:
- Diving response includes breath-holding, diving bradycardia, reduced limb blood flow, and elevated mean arterial blood pressure.
- Bradycardia stems from parasympathetic stimulation; reduced limb flow from sympathetic vasoconstriction.
- The response is initiated by facial water contact and apnea, coordinated in the brain stem.
Conclusions:
- The human diving response is a coordinated autonomic and respiratory reflex.
- Key modulators include water temperature, arterial oxygen levels, and emotional state.
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