Recent advances in fMRI, particularly accelerated image acquisition and ultra-high field (7T), have enabled high-resolution measurements and thus have provided the capability to non-invasively study the organization and function of smaller cortical areas in humans. One such area is primary somatosensory cortex, S1, in which the neuronal processing of tactile information largely occurs. Here we used 7T fMRI to (1) locate and map the fingertip representations in human S1 and then (2) to examine the activity at these locations in response to touching 3D-printed fractal textures. Robust and overlapping activation was seen across both conditions throughout primary somatosensory cortex.
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