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• W4225860143 endingPage "57" @default.
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• W4225860143 abstract "The primary somatosensory cortex (S1) is important for the control of movement as it encodes sensory input from the body periphery and external environment during ongoing movement. Mouse S1 consists of several distinct sensorimotor subnetworks that receive topographically organized corticocortical inputs from distant sensorimotor areas, including the secondary somatosensory cortex (S2) and primary motor cortex (M1). The role of the vibrissal S1 area and associated cortical connections during active sensing is well documented, but whether (and if so, how) non-whisker S1 areas are involved in movement control remains relatively unexplored. Here, we demonstrate that unilateral silencing of the non-whisker S1 area in both male and female mice disrupts hind paw movement during locomotion on a rotarod and a runway. S2 and M1 provide major long-range inputs to this S1 area. Silencing S2→non-whisker S1 projections alters the hind paw orientation during locomotion, whereas manipulation of the M1 projection has little effect. Using patch-clamp recordings in brain slices from male and female mice, we show that S2 projection preferentially innervates inhibitory interneuron subtypes. We conclude that interneuron-mediated S2-S1 corticocortical interactions are critical for efficient locomotion.SIGNIFICANCE STATEMENT Somatosensory cortex participates in controlling rhythmic movements, such as whisking and walking, but the neural circuitry underlying movement control by somatosensory cortex remains relatively unexplored. We uncover a corticocortical circuit in primary somatosensory cortex that regulates paw orientation during locomotion in mice. We identify neuronal elements that comprise these cortical pathways using pharmacology, behavioral assays, and circuit-mapping methods." @default.
• W4225860143 created "2022-05-05" @default.
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• W4225860143 date "2021-11-10" @default.
• W4225860143 modified "2023-10-16" @default.
• W4225860143 title "A Cortico-Cortical Pathway Targets Inhibitory Interneurons and Modulates Paw Movement during Locomotion in Mice" @default.
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• W4225860143 doi "https://doi.org/10.1523/jneurosci.0994-21.2021" @default.
• W4225860143 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34759028" @default.
• W4225860143 hasPublicationYear "2021" @default.
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