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R. McCutcheon

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Open access Sep 2026

Dexamphetamine-induced striatal hyperdopaminergia attenuates reward-related neural activation: A11C-PHNO PET-fMRI study.

BACKGROUND Ventral striatum (VS) and ventromedial prefrontal cortex (vmPFC) encode the value of stimulus and outcome phases in a context-dependent manner to support motivated behaviour. In psychosis, disrupted motivational coding has been hypothesised to contribute to negative symptoms via reduced sensitivity to goal-r...

C. Zauchenberger, L. Vano, M. Veronese et al. · 0 citations
Open access Sep 2026

The mechanism underlying tardive dyskinesia: an exploratory test of the dopamine overactivity hypothesis using MRI imaging of midbrain neuromelanin.

RATIONALE Tardive dyskinesia (TD) is a neurological syndrome of involuntary repetitive movements which results from treatment with antipsychotic medication. The pathoetiology of TD is not well understood but a possible mechanism involves dopaminergic overactivity in the nigrostriatal pathway. If this theory is correct,...

B. Bukala, L. Vano, Richard Carr et al. · 0 citations
Open access Aug 2026

Relapse trajectories and antipsychotic discontinuation in schizophrenia from individual participant data of five trials from the Yale Open Data Access database: a meta-analysis.

It is found that rapid relapse was not over-represented among those who discontinued treatment, which is not the pattern expected if rapid relapse following paliperidone discontinuation were commonly a pharmacological discontinuation effect.

Krisya Louie, S. Jauhar, J. Rubio et al. · 1 citation
Open access Sep 2026

Dopamine antagonists and dynamic symptom networks in schizophrenia.

It is suggested that effective treatment weakens maladaptive symptom coupling, offering new insights into the mechanisms of clinical improvement and potential targets for intervention.

Elizabeth A. Kenny, B. Brand, O. Ebrahimi et al. · 0 citations
Open access Sep 2026

Striatal dopaminergic function and cortical functional connectivity in 22q11.2 deletion syndrome: an integrative multimodal 18F-DOPA PET and magnetic resonance imaging study.

These findings bridge genetic risk at the 22q11.2 locus with dopamine dysfunction and large-scale networks, offering novel insights into the neurobiology of 22q11DS and related neuropsychiatric risk.

V. Mancini, M. Rogdaki, S. Jauhar et al. · 0 citations

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