involuntary

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Related to involuntary nervous system: visceral nervous system

involuntary

Physiol (esp of a movement or muscle) performed or acting without conscious control
References in periodicals archive ?
Breath is the only function through which we can influence the involuntary nervous system. Few studies have explained that, during pranayama training, regular inspiration & expiration for prolonged period leads the lungs to inflate & deflate maximally which causes strengthening & increased endurance of the respiratory muscles.
According to the Lane County Sheriff's Office's latest newsletter, "When a test subject is lying, the automatic, or involuntary nervous system, causes an inaudible increase in the micro tremor's frequency." Detectives trained to use the computer system can identify these deceptive voice patterns.

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