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Psychophysiological response

The interaction between psychological processes (like stress) and physiological responses (such as heart rate or muscle tension) due to certain stimuli.

Cortical arousal

The state of alertness and awareness of one's environment, often measured in research through various testing methods.

Disorientation exposure

A training method where individuals experience the effects of spatial disorientation to study its impact on performance and response.

Sympathetic nervous system (SNS)

Part of the autonomic nervous system that activates the 'fight or flight' response, leading to increased heart rate and energy mobilization.

Forced vital capacity (FVC)

The maximum amount of air a person can forcefully exhale after taking a deep breath, used to assess lung function.

Isometric hand strength

The maximum force exerted by a muscle or group of muscles during a static contraction without movement.

Perceived stress scale (PSS)

A psychological instrument used to measure the perception of stress in individuals.

Body mass index (BMI)

A measure calculated using height and weight to assess whether a person has a healthy body weight for a given height.

Spirometry

A common pulmonary function test that measures the volume and flow of air during breathing.

Critical flicker fusion threshold (CFFT)

A measure of the point at which a flickering light source is perceived as steady, used to assess cognitive resources and fatigue.