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Psych-Stress .docx

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Psychology 1000

Stress March 11, 2014 The Stress Response Psychosomatic Disorders Traumatic Stress Next Time: Freud (543-550) What is it that causes stress? Glucocorticoids  hormone released when you are stressed If prolonged  can destroy your brains cells and can lead to hypertension and anxiety disorders. Stress: is a pattern of physiological behaviour, emotional, and cognitive response to real or imagined stimuli that are perceived as blocking a goal or endangering our well-being. • Can be anything Stress Process: Stressors: • Catastrophes • Life changes  highest is death of a spouse (100) o If we go over 100 in one year, we are susceptible to having high stress • Hassels Intervening Factors: • Appraisal  can I handle it? • Perceived control • Personality  Type A and B people (A more likely to be stressed) • Social Support  Number of people we have to talk to • Coping Stress Reaction: • Physiological • Emotional • Behavioural Steps for stress response: 1. Sense stressor ▯ sympathetic NS (Adrenal medulla gets stimulated and epinephrine gets released) 2. Simultaneously a message is sent to the hypothalamus (stimulates the anterior pituitary and adrenal cortex)  releases glucocorticoids (cortisol) a. Can do bad stuff to the body and don’t want it around all of the time Cortisol: • Effects similar to epinephrine • Converts protein to glucose • Makes fat available for energy • Increased blood flow (increase blood pressure) ***Almost every cell in the body has a receptor for glucocorticoids Immune System:  Stress can suppress the immune system, making the person more vulnerable  Need the energy elsewhere How? Stress results in the release of glucocorticoids suppress the action of white blood cells Support for this Idea: Rats faced with inescapable shock showed a decrease in lymphocyte production Husbands show decreased immune response after wife’s death  People are more likely to get sick a few days after exposure to stressful event  Acute infectious disorders increase during final exams. ***Note: Reaction depends on appraisal • Do you perceive that situation is a threat and that you cannot cope? o Distress Are there consequences of prolonged stress? Psychosomatic Disorders: • Disorder with primarily physical symptoms, but “caused” or maintained by psychological factors o E.g. hypertension • Hypertension in air traf
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