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Emergence of cortical network motifs for short-term memory during learning.

ABSTRACT: Learning of adaptive behaviors requires the refinement of coordinated activity across multiple brain regions. However, how neural communications develop during learning remains poorly understood. Here, using two-photon calcium imaging, we simultaneously recorded the activity of layer 2/3 excitatory neurons in eight regions of the mouse dorsal cortex during learning of a delayed-response task. Across learning, while global functional connectivity became sparser, there emerged a subnetwork comprising of neurons in the anterior lateral motor cortex (ALM) and posterior parietal cortex (PPC). Neurons in this subnetwork shared a similar choice code during action preparation and formed recurrent functional connectivity across learning. Suppression of PPC activity disrupted choice selectivity in ALM and impaired task performance. Recurrent neural networks reconstructed from ALM activity revealed that PPC-ALM interactions rendered choice-related attractor dynamics more stable. Thus, learning constructs cortical network motifs by recruiting specific inter-areal communication channels to promote efficient and robust sensorimotor transformation.

SUBMITTER: Chia XW

PROVIDER: S-EPMC10613236 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature

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Emergence of cortical network motifs for short-term memory during learning.

Chia Xin Wei XW Tan Jian Kwang JK Ang Lee Fang LF Kamigaki Tsukasa T Makino Hiroshi H

Nature communications 20231028 1

Learning of adaptive behaviors requires the refinement of coordinated activity across multiple brain regions. However, how neural communications develop during learning remains poorly understood. Here, using two-photon calcium imaging, we simultaneously recorded the activity of layer 2/3 excitatory neurons in eight regions of the mouse dorsal cortex during learning of a delayed-response task. Across learning, while global functional connectivity became sparser, there emerged a subnetwork compris ...[more]

PMID: 37898638

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Emergence of cortical network motifs for short-term memory during learning.

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Emergence of cortical network motifs for short-term memory during learning.

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