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Theories and Treatment of Abnormality: Biological Approaches
Transcript of Theories and Treatment of Abnormality: Biological Approaches
paranoid Phineas Gage's Accident "Damage to the frontal lobe of the brain can perfectly well result in personality change."
-Dr. Lucy Worsley transformed Gage from a responsible, socially appropriate man into an impulsive, emotional, and socially inappropriate man. The accident damaged Gage's cerebral cortex; the part of the brain responsible for advanced thinking processes. Brain dysfunction can result from injury, such as from an automobile accident, and from diseases that cause deterioration biochemical theories of psychopathology suggest that the amount of certain neurotransmitters in the synapses is associated with specific types of psychopathology Some examples of Neurotransmitters that affect mental health: 1. Serotonin: affects emotions and impulses, such as aggressive impulses
2. Dopamine: associated with our experience of reinforcements or rewards,
3. Norepinephrine: affects heart rate
4. Gamma-aminobutyric acid, or GABA: plays an important role in anxiety symptoms, some theories of anxiety and depression suggest that these disorders result from dysregulation, or malfunctioning, the hypothalamic-pituitary-adrenal axis (HPA axis ) serotonin transporter gene the presence of at least one s allele on the serotonin transporter gene may increase an individual’s chance of developing depression polygenic process—it takes multiple genetic abnormalities coming together in one individual to create a specific disorder. These drugs are thought to relieve psychological symptoms by improving the functioning of neurotransmitter systems Electroconvulsive Therapy and Newer Brain Stimulation Technique ECT was introduced in the early twentieth century, originally as a treatment for schizophrenia.
Repetitive Transcranial Magnetic Stimulation, exposes patients to repeated, high-intensity magnetic pulses focused on particular brain structures