Summary
Psychiatry is the medical discipline devoted to understanding, diagnosing and treating mental disorders. It embraces a biopsychosocial perspective that integrates genetic and neurobiological mechanisms, cognitive and emotional processes, and social and cultural factors. Advances in neuroimaging and electrophysiology have revealed that circuit-level dysfunction—involving limbic, prefrontal and striatal networks—underpins core symptoms of mood, thought and anxiety disorders. At the same time, epidemiological and behavioural research highlights the impact of early-life adversity and social determinants on brain development and psychiatric risk. Treatments encompass psychopharmacology, psychotherapy and neurostimulation, and precision approaches are emerging that stratify patients by circuit-based “biotypes” or genetic profiles. This confluence of mind, science and society underlies modern efforts to reduce disability, guide personalised interventions and improve long-term outcomes for people affected by mental illness.
Research from Nature Portfolio
Personalised circuit scores derived from task-free and task-evoked fMRI in over 1,000 patients enabled the identification of six reproducible biotypes of depression and anxiety, each defined by distinct patterns of default mode, salience and frontoparietal dysfunction and predictive of differential response to pharmacological or behavioural therapies, offering a new framework for precision psychiatry.
Cingulate microstimulation in non-human primates induced a rapid negative decision-making bias by selectively reducing top-down beta-range influence from dorsolateral prefrontal to limbic regions, demonstrating a causal pathway by which subgenual cingulate overactivity can perpetuate depressive cognition and informing novel targets for neuromodulation.
Transcranial direct current stimulation targeting left superior temporal gyrus and dorsolateral prefrontal cortex significantly improved internal source-monitoring abilities in healthy volunteers, suggesting a non-invasive strategy to ameliorate self-monitoring deficits implicated in auditory hallucinations and pointing to future therapeutic applications in schizophrenia.
Psychiatry publication trend
The graph below shows the total number of articles in psychiatry across all publications each year (not limited to Nature Index journals).
Technical terms
Biotype: A subgroup of patients defined by consistent neurobiological profiles, such as distinct patterns of circuit dysfunction, that predict differential treatment response.
tDCS (transcranial direct current stimulation): A non-invasive neuromodulation technique that applies weak electrical currents to cortical regions to alter neuronal excitability.
Dimensionality-reduction: Statistical methods (e.g., multidimensional scaling) that simplify complex symptom or connectivity data into core underlying dimensions.
Functional connectivity: The temporal correlation of spontaneous activity between distinct brain regions measured by fMRI or electrophysiology.
Resting-state functional activity: Patterns of brain activation and connectivity observed when a subject is awake but not performing any explicit task.
References
- What Is Psychiatry?.
- Personalized brain circuit scores identify clinically distinct biotypes in depression and anxiety. Nature Medicine (2024).
- Cingulate microstimulation induces negative decision-making via reduced top-down influence on primate fronto-cingulo-striatal network. Nature Communications (2024).
- Innovative strategies for managing hallucinations by exploring effects of tDCS on source monitoring abilities. Scientific Reports (2024).
- Functional connectivity of amygdala subnuclei in PTSD: a narrative review. Molecular Psychiatry (2023).
- Dynamics of human serotonin synthesis differentially link to reward anticipation and feedback. Molecular Psychiatry (2024).
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