Network state changes in sensory thalamus represent learned outcomes

Masashi Hasegawa, Ziyan Huang, Ricardo Paricio-Montesinos and Jan Gründemann ()
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Masashi Hasegawa: Neural Circuit Computations
Ziyan Huang: Neural Circuit Computations
Ricardo Paricio-Montesinos: Neural Circuit Computations
Jan Gründemann: Neural Circuit Computations

Nature Communications, 2024, vol. 15, issue 1, 1-14

Abstract: Abstract Thalamic brain areas play an important role in adaptive behaviors. Nevertheless, the population dynamics of thalamic relays during learning across sensory modalities remain unknown. Using a cross-modal sensory reward-associative learning paradigm combined with deep brain two-photon calcium imaging of large populations of auditory thalamus (medial geniculate body, MGB) neurons in male mice, we identified that MGB neurons are biased towards reward predictors independent of modality. Additionally, functional classes of MGB neurons aligned with distinct task periods and behavioral outcomes, both dependent and independent of sensory modality. During non-sensory delay periods, MGB ensembles developed coherent neuronal representation as well as distinct co-activity network states reflecting predicted task outcome. These results demonstrate flexible cross-modal ensemble coding in auditory thalamus during adaptive learning and highlight its importance in brain-wide cross-modal computations during complex behavior.

Date: 2024
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DOI: 10.1038/s41467-024-51868-8

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