David J. Barker

MuFIX - Enabling Combinations of Concurrent Optogenetics and Lock-in Amplification Fiber Photometry via Removal of Optogenetic Stimulation Crosstalk

MuFIX recovers crosstalk-contaminated photometry responses by interpolating across contaminated segments using multi-frequency lock-in amplification, accurately restoring original signals.

A novel pH-sensitive reporter reveals the cocaine-regulated trafficking of dopamine transporters in neuronal processes

This study uses a novel pH-sensitive reporter to show cocaine induces transient DAT internalization and prolonged membrane reinsertion in axons.

The cognitive basis of intracranial self-stimulation of midbrain dopamine neurons

The paper shows dopamine neurons support intracranial self-stimulation (ICSS) only at supraphysiological frequencies, not reflecting their role in reinforcement learning.

Lateral Preoptic Area Neurons Signal Cocaine Self-Administration Behaviors

The paper examines how lateral preoptic area neurons encode different stages of cocaine self-administration behavior.

pMAT: An Open-Source Software Suite for the Analysis of Fiber Photometry Calcium Imaging

The paper introduces pMAT, an open-source software suite for analyzing fiber photometry calcium imaging data, addressing the lack of standardized analysis pipelines.

A diencephalic circuit for opioid analgesia but not positive reinforcement

The paper identifies a diencephalic circuit involving the lateral habenula and lateral preoptic area that mediates opioid analgesia without reinforcement.