PSYC 3070 Lecture Notes - Lecture 1: Diencephalon, Allostasis, Herbert Benson
Document Summary
Walter cannon (physiologist harvard medical school: first to desecibed the bodys reaction to stress, first to indentify fight or flight response. Fight or flight response (walter cannon) (stress reactivity) Body"s stress reaction that includes an increase in heart rate, respiration, blood pressure, and sacrum cholesterol. Young endocrinologist used rats and exposed them to stressors. (hans selye). Factors with the potential to cause stress. (something with the potential to cause a stress reaction. The three stages of stress reaction described by hans selye: alarm reaction, stage of resistance, stage of exhaustion. Phase 1: alarm reaction; the body shows changes characteristics of the first exposure to a stressor. At the same time, resistant is diminished and if stressor is sufficiently strong (severe burns, extremes of temperature) death may result. Phase 2: stage of resistance; resistance ensues if continued exposure to stressor is compatible with adaptation. Bodily signs characteristics of alarm reaction virtually disappeared, resistance rises above normal.
