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NCT03822910

Hippocampal Memory Circuits in Delusions

Completed Last updated 30 April 2024
What this trial tests

trial testing Pattern Separation Paradigm in Psychosis in 212 participants. Completed in 12 August 2023.

Timeline
13 July 2019
Primary endpoint
12 August 2023
12 August 2023

Quick facts

Lead sponsorNYU Langone Health
StatusCompleted
Study typeOBSERVATIONAL
Enrollment212
Start date13 July 2019
Primary completion12 August 2023
Estimated completion12 August 2023
Sites3 locations across China, United States

Drugs / interventions tested

Conditions studied

Sponsor

NYU Langone Health — full company profile →

Who can join

Adults 16 to 35, any sex, with Psychosis. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

This study will investigate dentate gyrus (DG) and hippocampal CA3 sub field function, using the pattern separation paradigm, as reflected by the difference in brain activation in response to same-as-previously- seen (OLD) vs. similar-to-previously-seen (SIM) objects in first episode psychosis (FEP) subjects before and after anti psychotic treatment and in matched healthy controls (HC). The current study uses three novel high-resolution task-based and post-encoding resting fMRI measures to probe hippocampal circuitry in delusions. It will also study CA1 function, using a sequential associative mismatch paradigm, as reflected by activation of CA1 in response to mismatching information compared to memory of that stimulus in FEP subjects before and after antipsychotic treatment and in matched HC. Finally, this study will evaluate plasticity of hippocampal intrinsic functional connectivity (IFC) in response to memory consolidation, using an encoding-plasticity paradigm, in FEP subjects before and after anti psychotic treatment and in matched HC. For each of the three imaging projects, a total of 50 FEP subjects and 50 matched healthy controls (HC) will be studied; hence, 300 subjects will be studied over 5 years. Within each paradigm, medication-naive FEP subjects will be studied at baseline and 8 weeks after starting anti psychotic medication. HC participants will be studied at baseline and 8 weeks later but will not receive any treatment.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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Other recruiting trials for Psychosis

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