Reward hypersensitivity
Over-weighting of goals and incentives in mania risk.
Functionally, bipolar course reflects unstable set-points for energy, reward pursuit and sleep — tipping into mania or depression under load.
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.
Processes
Goal dysregulation
Escalating projects without braking.
Sleep–wake collapse
Reduced need for sleep feeding further activation.
Cognitive control failure
Impulsivity and poor foresight in mania.
Anhedonia in depression
Collapsed reward pursuit and energy.
Inter-episode residual risk
Subtle sleep and cognition vulnerabilities persist.
Networks
Mesolimbic reward80
Prefrontal regulation58
Salience / ACC–insula70
Default / rumination (depression)65
Circadian pacemaker influence45
Mesolimbic reward
Incentive salience amplified in mania.
Prefrontal regulation
Often relatively down-weighted in manic states.
Salience / ACC–insula
State monitoring and affective conflict.
Default / rumination (depression)
Self-critical loops in bipolar depression.
Circadian pacemaker influence
Timing systems that destabilise under sleep loss.
Examples
All-night project spiral
Reduced sleep need + escalating goals.
Spending surge
Reward hypersensitivity without foresight brakes.
Post-mania crash
Energy collapse into bipolar depression.
Social-rhythm therapy week
Anchoring wake, meals and meds to stabilise.
Compare radar scores with Depression and Sleep pages; seek care for personal symptoms.
Sources & research
- Bipolar disorderClinical primer on bipolar disorder.DOI
- A critical appraisal of neuroimaging studies of bipolar disorder: toward a new conceptualization of underlying neural circuitryCritical neuroimaging synthesis for bipolar circuitry.DOI
- Evidence-based guidelines for treating bipolar disorder: Revised third edition recommendations from the British Association for PsychopharmacologyEvidence-based treatment guidelines.DOI
Keep exploring
More in Disorders
🌫️
Alzheimer's Disease
Progressive dementia driven by protein pathology and network failure.
Research 74 🤲Parkinson's Disease
Dopamine circuit loss, movement symptoms and non-motor features.
Research 54 ⚡Stroke
Sudden vascular injury — time, territory and the race to recover.
Research 64 ⚡Epilepsy
Hyperexcitable networks, seizures and modern treatment options.
Research 95 🌧️Depression
Mood circuits, stress biology and evidence-based interventions.
Research 66 🌀Schizophrenia
Perception, belief and cognition when predictive models go awry.
Research 93 💢Migraine
Sensory gain, aura and the brain’s recurrent pain networks.
Research 74 📱ADHD
Attention control, impulsivity and developmental self-regulation.
Research 51 🧩Autism Spectrum
Neurodevelopmental diversity in social communication and sensory processing.
Research 89 🧬Multiple Sclerosis
Immune attack on myelin — disconnection across white-matter highways.
Research 80 🩹Traumatic Brain Injury
Mechanical insult, diffuse injury and the long arc of recovery.
Research 87 🔁Addiction
Compulsive seeking when reward prediction and control circuits tip.
Research 69 😰Anxiety
Threat circuitry, worry loops and avoidance — how brains over-predict danger and how care can recalibrate risk.
Research 86 🛡️PTSD
Trauma memory, hyperarousal and avoidance — how threat learning overgeneralises and how evidence-based care supports recovery.
Research 87