Figure 3 | Scientific Reports

Figure 3

From: Shared neural representations of tactile roughness intensities by somatosensation and touch observation using an associative learning method

Figure 3

Results of the whole-brain searchlight analyses. Three searchlight analyses identified voxel clusters exhibiting patterns of neural activity carrying information for roughness intensity. The clusters identified from tactile exploration, visual observation, and both modalities are colored in orange, blue, and green, respectively. In addition, activated brain regions evoked by tactile explorations using a univariate GLM contrasting tactile stimulations (including all five roughness intensities) against resting periods are highlighted in purple. Significant activations were found in the contralateral M1 and S1 regions (p < 0.001 uncorrected, size > 50). The lower part of the figure shows the classification performances of each identified cluster. The graphs are shown in the colors specified above. Chance level is indicated by the dashed line (20%) and error bars indicate standard errors. Abbreviations: ACC, anterior cingulate cortex; SMG, supramarginal gyrus; PPC, posterior parietal cortex; M1, primary motor cortex; S1, primary somatosensory cortex; MPFC, medial prefrontal cortex; IOG, inferior occipital gyrus; INS, insular cortex.

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