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- W2896471611 abstract "SUMMARY Sensory maps in layer (L) 2/3 of rodent cortex lack precise functional column boundaries, and instead exhibit locally heterogeneous tuning superimposed on smooth global topography. Could this organization be a byproduct of impoverished experience in laboratory housing? We compared whisker map somatotopy in L2/3 and L4 excitatory cells of somatosensory (S1) cortex in normally housed vs. tactile-enriched mice, using GCaMP6s imaging. Normally housed mice had a dispersed, salt-and-pepper whisker map in L2/3, but L4 was more topographically precise. Enrichment (P21 to P46-71) sharpened whisker tuning and decreased, but did not abolish, local tuning heterogeneity. In L2/3, enrichment strengthened and sharpened whisker point representations, and created functional boundaries of tuning similarity and noise correlations at column edges. Thus, tactile experience drives emergence of functional columnar topography in S1, and reduces salt-and-pepper tuning heterogeneity. These changes predict improved single-trial population coding of whisker deflections within each column." @default.
- W2896471611 created "2018-10-26" @default.
- W2896471611 creator A5050722237 @default.
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- W2896471611 date "2018-10-18" @default.
- W2896471611 modified "2023-10-18" @default.
- W2896471611 title "Tactile enrichment drives emergence of functional columns and improves sensory coding in L2/3 of mouse S1" @default.
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- W2896471611 doi "https://doi.org/10.1101/447508" @default.
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