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Map of the barrel cortical activity with functional magnetic resonance imaging (fMRI). Left panel is the schematic of the whisker pad electrical stimulation in three groups of rats: Sham (A), IO (B), and IO+ablation (C). Right panel is the fMRI beta map showing activity in the BC from two representative rats in each group. The functional map is overlaid on the EPI raw images acquired from each rat. The red arrows in the IO+ablation EPI images indicate the signal loss of the ablated BC.
