Physiological Basis of Voice Stress Analysis Flashcards

What physiological mechanism is the primary basis for voice stress analysis in CVSA technology?

Answer: Microtremors in the voice caused by stress-related muscle tension

CVSA is based on detecting microtremors—subtle frequency modulations in the voice caused by psychological stress affecting laryngeal muscle tension.

The microtremors associated with psychological stress and detected by CVSA technology typically occur at what frequency range?

Answer: 8–12 Hz

Microtremors linked to psychological stress typically fall in the 8–12 Hz range, which CVSA instruments are specifically designed to detect.

Which part of the human nervous system is primarily responsible for the stress response that CVSA technology detects?

Answer: Autonomic nervous system

The autonomic nervous system governs involuntary responses to stress, including the laryngeal muscle microtremors that produce voice changes detectable by CVSA.

How does psychological stress affect the laryngeal muscles in a way that is relevant to CVSA analysis?

Answer: It induces microtremors through increased involuntary muscle tension

Psychological stress increases tension in laryngeal muscles, producing microtremors superimposed on the voice signal that are detectable by CVSA instruments.

The 'fight or flight' response is relevant to CVSA primarily because it:

Answer: Triggers hormonal changes that alter vocal cord vibration patterns

The fight-or-flight response releases hormones such as adrenaline that affect muscle tension throughout the body, including the larynx, producing detectable changes in vocal patterns.

Which vocal quality change is NOT directly associated with the physiological stress response that CVSA measures?

Answer: Changes in accent or regional dialect

Accents and regional dialects are learned speech characteristics unrelated to the involuntary physiological stress response that CVSA is designed to measure.

The 'inframyogenic' frequency modulations detected by CVSA are generated by:

Answer: Involuntary muscle tremors within the laryngeal muscles

Inframyogenic modulations are involuntary tremors generated within the laryngeal muscles; their suppression under stress is the core signal CVSA technology detects.