What is vagal tone?

Some articles on vagal tone, vagal:

Respiratory Sinus Arrhythmia - Use in Research - Psychological Findings
... in expression of RSA, the majority of vagal tone research as it relates to social behavior and human psychology has focused on children ... Typically, researchers are concerned with baseline vagal tone, treating it either as a potential predictor of behavior or examining its relationship ... is worth noting that individual suppression of vagal tone during a particularly challenging task (“vagal reactivity”) may be influenced by regulation of attention some studies have ...
Polyvagal Theory - Vagal Tone: A Physiological Marker of Stress
... been theorized that individuals with greater vagal tone are able to exhibit a greater range of such behaviors ... On the other hand, decreased vagal tone is associated with illnesses and medical complications that compromise the CNS ...

Famous quotes containing the word tone:

    If the oarsmen of a fast-moving ship suddenly cease to row, the suspension of the driving force of the oars doesn’t prevent the vessel from continuing to move on its course. And with a speech it is much the same. After he has finished reciting the document, the speaker will still be able to maintain the same tone without a break, borrowing its momentum and impulse from the passage he has just read out.
    Marcus Tullius Cicero (106–43 B.C)