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  2. Postprandial somnolence - Wikipedia

    en.wikipedia.org/wiki/Postprandial_somnolence

    [8] [9] This shift in the balance of autonomic tone towards the parasympathetic system results in a subjective state of low energy and a desire to be at rest, the opposite of the fight-or-flight state induced by high sympathetic tone. The larger the meal, the greater the shift in autonomic tone towards the parasympathetic system, regardless of ...

  3. Parasympathetic nervous system - Wikipedia

    en.wikipedia.org/wiki/Parasympathetic_nervous_system

    The parasympathetic nervous system (PSNS) is one of the three divisions of the autonomic nervous system, the others being the sympathetic nervous system and the enteric nervous system. [ 1 ] [ 2 ] The autonomic nervous system is responsible for regulating the body's unconscious actions.

  4. Dysautonomia - Wikipedia

    en.wikipedia.org/wiki/Dysautonomia

    The autonomic nervous system is a component of the peripheral nervous system and comprises two branches: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PSNS). The SNS controls the more active responses, such as increasing heart rate and blood pressure.

  5. Vagal tone - Wikipedia

    en.wikipedia.org/wiki/Vagal_tone

    While baseline vagal input is constant, the degree of stimulation it exerts is regulated by a balance of inputs from sympathetic and parasympathetic divisions of the autonomic nervous system, with parasympathetic activity generally being dominant. Vagal tone is frequently used to assess heart function, and is also useful in assessing emotional ...

  6. Neuroscience of sleep - Wikipedia

    en.wikipedia.org/wiki/Neuroscience_of_sleep

    Some common sleep disorders include insomnia (chronic inability to sleep), sleep apnea (abnormally low breathing during sleep), narcolepsy (excessive sleepiness at inappropriate times), cataplexy (sudden and transient loss of muscle tone), and sleeping sickness (disruption of sleep cycle due to infection).

  7. Paroxysmal sympathetic hyperactivity - Wikipedia

    en.wikipedia.org/wiki/Paroxysmal_sympathetic...

    She also displayed minor symptoms: pupillary dilation, hiccups, and lacrimation. At the time, her episodes were termed 'diencephalic autonomic epilepsy'. It was believed that both her sympathetic and parasympathetic nervous systems were showing overactivity. [1] The future may hold non-pharmacologic solutions such as renal sympathetic ...