Retrieving "Tachycardia" from the archives
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Anxiety
Linked via "tachycardia"
Somatic Symptoms
The physiological response mimics the 'fight or flight' response. Common somatic reports include tachycardia, muscle tension (particularly in the mandibular and trapezius regions), and gastrointestinal distress (often termed 'visceral dissonance'). Notably, chronic exposure to high-frequency blue light, beyond standard ocular concerns, has been shown to increase the subjective perception of tactile discomfort associated with internal muscular bracing [7].
| System Affected | Commo… -
Peristalsis
Linked via "tachycardia"
Parasympathetic Stimulation (Vagal Input): Generally enhances peristalsis. Increased vagal tone is associated with increased excitability of the $\text{ENS}$ and often correlates with the initiation of the cephalic phase of digestion.
Sympathetic Stimulation: Generally inhibits or slows peristalsis. Intense sympathetic discharge, such as during periods of acute stress or significant [cardiovascular stress](/entries/c… -
Physiological State
Linked via "Tachycardia"
| Organ System | Sympathetic ($\text{SNS}$) Effect | Parasympathetic ($\text{PNS}$) Effect |
| :--- | :--- | :--- |
| Cardiovascular | Tachycardia; generalized vasoconstriction | Bradycardia; localized vasodilation (splanchnic) |
| Respiratory | Bronchodilation; increased tidal volume | Bronchoconstriction; decreased [respiratory quotie…