Cardiac vagal tone: A physiological index of stress

  title={Cardiac vagal tone: A physiological index of stress},
  author={S. Porges},
  journal={Neuroscience & Biobehavioral Reviews},
  • S. Porges
  • Published 1995
  • Psychology, Medicine
  • Neuroscience & Biobehavioral Reviews
  • Cardiac vagal tone is proposed as a novel index of stress and stress vulnerability in mammals. A model is described that emphasizes the role of the parasympathetic nervous system and particularly the vagus nerve in defining stress. The model details the importance of a branch of the vagus originating in the nucleus ambiguus. In mammals the nucleus ambiguus not only coordinates sucking, swallowing, and breathing, but it also regulates heart rate and vocalizations in response to stressors. In… CONTINUE READING
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