Selye's General Adaptation Syndrome describes that the body reacts to all stressors in a GENERAL way. He observed on lab rats with extreme temperatures and morphine.
3 Stages of GAS:
Alarm - Hypothalamus triggers HPA axis and ANS which causes adrenaline for 'fight or flight'. Reactions = increased heart and breathing rate.
Resistance - Continues producing adrenaline and cortisol. The PNS cuts in and body appears to cope. This causes raised blood pressure and stored sugars. HPA axis governs physiological response.
Exhaustion - Adrenal glands get damaged and a weakened immune system occurs. This causes heart disease & ulcers. The rats died in this stage.
Assumptions of Biological Aproach
First assumption: There is a close link between the brain and behaviour. Thoughts and emotions are electrical messages carried by neuro transmitters.
Second Assumption: A close link between genes and behaviour. Schizophrenia is by the genes DISC1 and G72.
Therapy Related to Biological Approach
Chemotherapy uses drugs to reduce neurotransmitters to make abnormal behaviour normal.
Prozac is anti depressant (increased serotonin).
Chlorpromazine is an anti psychotic drug. (lowers dopamine levels)
Anti anxiety are called Beta-Blockers which reduce adrenaline.
Some people will be given a placebo to see if the drugs work.
After the course symptoms will be discussed to see improvement.
Side effects are discussed.