Charles D. Kopec

This study shows that rats' anterodorsal striatum and prefrontal cortex work together in a recurrent circuit for evidence accumulation, with bidirectional communication and robustness to perturbations.

FixGrower is a standardized protocol for training center-port fixation in rodents, reducing training time by 61% and lowering violation rates across species and task difficulty.

The paper tests whether rats use an integration strategy or degenerate strategies in a perceptual decision-making task and finds they predominantly use integration.

This study investigates decision-making phases in the brain using simultaneous recordings, supporting a single accumulator model and revealing abrupt covert commitment transitions.

The paper identifies transitions in neural dynamics and modes during perceptual decision-making in rats, linking these transitions to decision commitment.

This study shows that the superior colliculus (SC) plays a key role in non-spatial cognitive processes in rats, challenging the view that cognition relies primarily on prefrontal cortex.

This paper demonstrates a method for long-term, multi-probe Neuropixels recordings in freely moving rats over multiple months, showing high yield and probe reusability.

This study shows that lateral orbitofrontal cortex (lOFC) promotes learning of risky biases but not spatial biases in rats during decision-making tasks.

This study shows that the posterior parietal cortex (PPC) represents sensory history and its effects on behavior, with optogenetic silencing improving performance by reducing prior sensory influence.