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⚖️Anatomy

Bipolar Disorder · Mania, depression and the networks between — mood-state biology, sleep disruption and evidence-based stabilising care.

Reviewed 2026-08·Sources & research·Methodology·Media credits

Bipolar Disorder
Bipolar DisorderUnknown author · CC BY-SA 3.0 · Wikimedia Commons

Anatomy emphasises prefrontal–limbic imbalance, striatal reward sensitivity and hypothalamic circadian nodes more than a single “bipolar lesion”.

Educational neuroscience context only — not medical advice, diagnosis or a substitute for emergency or clinical care. If you are in crisis, seek local emergency services or a licensed clinician.

Structures

Ventrolateral / dorsolateral PFC

Regulation and cognitive control that weaken in mania.

Amygdala

Affective salience that can amplify in mood episodes.

Ventral striatum / NAc

Reward pursuit and invigoration linked to mania risk.

Anterior cingulate

Conflict and mood-state monitoring.

Hypothalamic circadian nodes

SCN-linked timing of sleep and hormones.

Hippocampus

Stress and memory systems interacting with mood course.

Pathways

Mesolimbic dopamine

Reward prediction and manic invigoration hypotheses.

PFC–limbic regulation

Top-down control that fails in extreme states.

Circadian–monoamine coupling

Links sleep disruption to neurotransmitter timing.

Uncinate / frontostriatal fibres

Structural corridors reported in imaging studies.

Landmarks

Actigraphy / sleep charts

Objective windows onto circadian destabilisation.

Mania rating scales

Track energy, speech and sleep need clinically.

Lithium level monitoring

Therapeutic window with toxicity vigilance.

fMRI reward tasks

Probe striatal responses across mood states.

Open atlas neighbours: PFC, amygdala, striatum, hypothalamus.

Sources & research

  1. Bipolar disorderGrande I; et al. · 2016 · The LancetClinical primer on bipolar disorder.DOI
  2. A critical appraisal of neuroimaging studies of bipolar disorder: toward a new conceptualization of underlying neural circuitryPhillips ML; Swartz HA · 2014 · American Journal of PsychiatryCritical neuroimaging synthesis for bipolar circuitry.DOI
  3. Evidence-based guidelines for treating bipolar disorder: Revised third edition recommendations from the British Association for PsychopharmacologyGoodwin GM; et al. · 2016 · Journal of PsychopharmacologyEvidence-based treatment guidelines.DOI

Media credits

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