RESUMO
A physiological monitoring capability was developed for the Army's Crew Station Research and Development Facility (CSRDF), a research simulator for advanced rotorcraft. Preliminary physiological data are reported from studies of simulator-induced sickness. Our objective was to demonstrate sensitivity of physiological measures relative to self-reports of simulator sickness severity. The data suggested that heart period, tachygastria, and skin conductance level were more sensitive to simulator sickness than were vagal tone and normal myoelectrical gastric activity.
Assuntos
Medicina Aeroespacial , Sistema Nervoso Autônomo/fisiopatologia , Enjoo devido ao Movimento/fisiopatologia , Análise Discriminante , Eletrocardiografia , Monitoramento Ambiental , Frequência Cardíaca/fisiologia , Humanos , MilitaresRESUMO
Therapy for acute myocardial infarction has its most compelling effect when the patient is seen early in the course of illness. In this article, the authors discuss the status of nonlytic medications during the acute phase of Q-wave infarction and also examine the role of risk modification and stratification in long-term survival of the patient.
Assuntos
Antagonistas Adrenérgicos beta/uso terapêutico , Analgesia , Bloqueadores dos Canais de Cálcio/uso terapêutico , Morfina , Infarto do Miocárdio/tratamento farmacológico , Nitroglicerina/uso terapêutico , Oxigênio/administração & dosagem , Humanos , Fatores de RiscoRESUMO
Attention was measured by means of its effect upon induced motion. Perceived horizontal motion was induced in a vertically moving test spot by the physical horizontal motion of inducing objects. All stimuli were in a frontoparallel plane. The induced motion vectored with the physical motion to produce a clockwise or counterclockwise tilt in the apparent path of motion of the test spot. Either a single inducing object or two inducing objects moving in opposite directions were used. Twelve observers were instructed to attend to or to ignore the single inducing object while fixating the test object and, when the two opposing inducing objects were present, to attend to one inducing object while ignoring the other. Tracking of the test spot was visually monitored. The tilt of the path of apparent motion of the test spot was measured by tactile adjustment of a comparison rod. It was found that the measured tilt was substantially larger when the single inducing object was attended rather than ignored. For the two inducing objects, attending to one while ignoring the other clearly increased the effectiveness of the attended inducing object. The results are analyzed in terms of the distinction between voluntary and involuntary attention. The advantages of measuring attention by its effect on induced motion as compared with the use of a precueing procedure, and a hypothesis regarding the role of attention in modifying perceived spatial characteristics are discussed.
