NIDA IRP Training Programs
Banner - There may be a research study for you

IRP News

NIH Green Labs Program

Congratulations to the NIDA labs who participated and received awards in the 2023 NIH Green Labs Program! Molecular Neuropsychiatry Section, Adjei, Nasser – Gold Translational Analytical Core, Kryszak, Lindsay – Silver Neuronal Circuits and Behavior Section, Sarsfield, Sarah  – Silver Integrative Neuroscience Research Branch, Neuronal Networks Section, Barbano, Flavia – Bronze Molecular Targets and Medications… [Read More]

More IRP News

Hot Off the Press

More Hot Off the Press

Reviews To Read

Controversies in Assessment, Diagnosis, and Treatment of Kratom Use Disorder.

Reviews To Read – August 2024. Published in Current Psychiatry Reports by Kirsten Smith, David  Epstein & Stephanie Weiss of the NIDA IRP Translational Addiction Medicine Branch. This publication arose because Dr. Weiss was asked to write about “kratom misuse” for a kratom-focused issue of Current Psychiatry Reports.  She agreed to contribute, but with a change… [Read More]

More Reviews to Read

Featured Papers

Distinct prelimbic cortex ensembles encode response execution and inhibition.

Featured Paper of the Month – January 2026
Published in PNAS by Rajtarun Madangopal, Ph.D. and  Bruce Hope, Ph.D. of the NIDA IRP Neuronal Ensembles in Drug Addiction Section.

In this study, researchers used single-cell calcium imaging to longitudinally track hundreds of brain cells (neurons) in rats across three phases: when they pressed a lever for food rewards (Training), as they learned to stop pressing when the reward was removed (Extinction), and when they resumed  pressing after a small, non-contingent reward was reintroduced (Reinstatement). Analyses showed that distinct and non-overlapping populations – called ensembles – were active during Training and Extinction, to support response execution and inhibition, respectively.

More Featured Papers