Summary
Highlights
Biomedical therapies aim to physiologically change the brain's electrochemical state using psychotropic drugs, magnetic impulses, or electrical currents and surgery. These are often used for severe disorders, sometimes in combination with psychotherapy.
Psychologists assess treatment effectiveness through client perceptions, clinician perspectives, and outcome research. While client and clinician feedback can be biased, randomized clinical trials (RCTs) and meta-analyses provide more objective measures of effectiveness (works in real-world settings) and efficacy (works better than control).
Effective psychotherapies share common factors: instilling hope, offering new perspectives on problems and the future, and providing genuine empathy within a trusting, caring relationship through clear and positive communication.
The four main categories of psychotropic drugs are antipsychotics (for schizophrenia, blocking dopamine), anxiolytics (for anxiety, depressing CNS activity), antidepressants (for depression and anxiety, altering neurotransmitter availability like serotonin), and mood stabilizers (for bipolar disorder, like lithium). Antidepressants are often most effective when combined with psychotherapy, and for mild to moderate symptoms, may not be more effective than psychotherapy or placebos.
Electroconvulsive Therapy (ECT), despite its negative past, is an effective treatment for severe, treatment-resistant depression. It involves sending a brief electrical current through an anesthetized patient's brain, causing a controlled seizure. Theories suggest it alters neurotransmitter activity, modifies stress hormones, or reactivates dormant neurons.
Other brain stimulation treatments include repetitive transcranial magnetic stimulation (rTMS), which uses painless electromagnetic pulses, and deep-brain stimulation (DBS), an invasive procedure involving surgically implanted electrodes. These are hypothesized to jump-start neural circuitry in depressed brains.
Beyond formal treatments, lifestyle changes like daily aerobic exercise (30-60 minutes), adequate sleep, social interaction, and good nutrition can significantly improve mental health and mood management, especially for less severe psychological disorders. Healthy living plays a crucial role.