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Research Areas:

Behavioural Neuroscience

Research Summary:

My research group integrates ideas and methods from systems neuroscience, experimental psychology and machine learning to understand how the heterogeneity of neuron types endows brain circuits with efficient distributed computations underlying behavior and cognition. We develop and experimentally validate new models of distributed computation in brain circuits including a new understanding of how dopamine-based distributed reinforcement learning could be implemented in the brain. To answer these questions, we perform large scale electrophysiological recordings in rodents performing complex behavioral tasks, build new data analysis tools and develop new classes of biologically plausible neural networks.

Selected References:

Tolooshams, B., Matias, S., Wu, H., Temereanca, S., Uchida, N., Murthy, V. N., Masset, P. & Ba, D. (2024). Interpretable deep learning for deconvolutional analysis of neural signals.听bioRxiv, 2024-01.

Masset, P., Tano, P., Kim, H. R., Malik, A. N., Pouget, A., & Uchida, N. (2023). Multi-timescale reinforcement learning in the brain.听bioRxiv, 2023-11.

Zavatone-Veth, J. A., Masset, P., Tong, W. L., Zak, J. D., Murthy, V. N., & Pehlevan, C. (2023). Neural circuits for fast Poisson compressed sensing in the olfactory bulb.听Advances in Neural Information Processing Systems,听36.

Masset, P., Zavatone-Veth, J., Connor, J. P., Murthy, V., & Pehlevan, C. (2022). Natural gradient enables fast sampling in spiking neural networks.听Advances in Neural Information Processing Systems,听35, 22018-22034.

Masset, P., Qin, S., & Zavatone-Veth, J. A. (2022). Drifting neuronal representations: Bug or feature?.听Biological cybernetics,听116(3), 253-266.

Ott, T., Masset, P., Gouv锚a, T. S., & Kepecs, A. (2022). Apparent sunk cost effect in rational agents.听Science Advances,听8(6), eabi7004.

Masset, P., Ott, T., Lak, A., Hirokawa, J., & Kepecs, A. (2020). Behavior-and modality-general representation of confidence in orbitofrontal cortex.听Cell,听182(1), 112-126.

Hirokawa, J., Vaughan, A., Masset, P., Ott, T., & Kepecs, A. (2019). Frontal cortex neuron types categorically encode single decision variables.听Nature,听576(7787), 446-451.