2 Neuroscience2.12 Neurobiology of specific treatments
2.12.4 Neurobiology of psychological therapies
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Written by Resident Doctor Committee · Published
New in the 2027 syllabus
The College added this topic for exams from January 2027.
How therapy changes the brain
Psychological therapies work through experience, attention, learning and relationships. All of these depend on neural activity and plasticity (the brain's ability to change with experience).
Repeated practice changes the strength and coordination of neural networks. Over time, this can change a person's predictions, behavioural habits and ways of regulating emotion.
A biological account adds to the psychological formulation rather than replacing it. It does not reduce treatment to one transmitter or one brain region.
Therapeutic process | Possible neural processes |
|---|---|
Exposure | New safety learning and updating of threat predictions |
Cognitive reappraisal | Using attention, language and control networks to change how a situation is interpreted |
Behavioural activation | New links between actions and rewards (reinforcement contingencies), and reward-guided behaviour |
Skills practice | Regulation strategies get stronger through repeated use |
Interpersonal learning | Updating expectations about oneself, other people and social outcomes |
What the evidence shows, and its limits
Exposure does not erase the original fear memory. The new safety learning exists alongside it, so fear can return in a different setting (renewal) or after time has passed (spontaneous recovery).
Neuroimaging studies show changes in cortical and limbic activity with treatment. The findings vary with the disorder, task and therapy studied.
A before-and-after change does not prove a specific therapeutic mechanism. It may reflect symptom improvement, repeated testing or nonspecific effects of treatment.
Control groups and longitudinal measurements (repeated over time) help separate these explanations.
A measure that predicts response in a research sample is not, on that basis, a routine test for choosing treatment.
Clinical improvement is still the outcome that matters. Imaging and physiological measures test ideas about how change happens.
Medication and psychotherapy start through different routes but can act on overlapping neural systems.