title: [Importance of the nonverbal characteristics of the speech signal for evaluating the mental and physical state of a pilot].
abstract: An analysis of the frequency, time and dynamics characteristics of the acoustic signal is one of the useful and reliable methods of objective assessment of the psychophysiological state of a pilot. The information conveyed through the nonverbal channel is nonspecific. The pattern of the stressor that causes a change in the pitch can be often identified only tentatively, if there is no additional information. The intensity of the stressor cannot be well correlated with the degree of the pitch change. The voice alters most seriously in response to psychic stressors and factors that affect adversely the normal merchanics of respiration (breathing at increased pressure, acceleration). The voice remains unaltered during an exposure to hypoxia and high ambient temperatures.
mesh_terms: D000337:Aerospace Medicine; D001273:Atmosphere Exposure Chambers; D004780:Environment, Controlled; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology; D008606:Mental Processes / Q000502:physiology*; D009633:Nonverbal Communication; D010809:Physical Fitness; D013060:Speech / Q000502:physiology*; D013312:Stress, Physiological / Q000503:physiopathology; D013315:Stress, Psychological / Q000502:physiology; D013997:Time Factors
vernacular_title: Znachenie neverbal'nykh kharakteristik rechevogo signala dlia otsenki psikhicheskogo i fizicheskogo sostoianiia letchika