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© Banff and Buchan College 2004 The Biomedical Model © Banff and Buchan College 2004

© Banff and Buchan College 2004 The Biomedical Model Main assumptions: Psychological disorders are illnesses or diseases affecting the nervous system Abnormal behaviour, thinking and emotion are caused by biological dysfunctions Understanding mental illness involves understanding what went wrong with the brain © Banff and Buchan College 2004

© Banff and Buchan College 2004 The Biomedical Model Possible causes of abnormal behaviour: Biochemistry – an imbalance of certain neurotransmitters or hormones might cause parts of the brain to malfunction Structural damage or abnormality – if the structure of the brain is damaged or improperly formed then thinking, emotion and behaviour may change © Banff and Buchan College 2004

© Banff and Buchan College 2004 The Biomedical Model Factors that may affect NS functioning: Genetics – inherited developmental abnormality Toxicity – chemical poisoning from e.g. drugs or environmental toxins Infection/disease – causing chemical or structural damage to the brain Stress – causing abnormal hormonal effects in the long term © Banff and Buchan College 2004

Brain Abnormality (Structure) © Banff and Buchan College 2004

Brain Abnormality (Structure) © Banff and Buchan College 2004

Brain Abnormality (Functioning) © Banff and Buchan College 2004

Henderson Road, Fraserburgh, AB43 9GA © Banff and Buchan College 2004 Tel: (01346) 515777 Fax: (01346) 515370 www.banff-buchan.ac.uk enquiries@banff-buchan.ac.uk © Banff and Buchan College 2004