Fig. 1.

Brain activations revealed in individual contrasts of slow and fast touch vs baseline. Activation in the left posterior insula is more robust during the slow touch (A, C) relative to the fast touch (D). Similarly, slow touch elicits a right superior temporal sulcus and cerebellar response (B), which is not found in the fast vs baseline contrast (E). Both types of touch elicited activation in the left thalamus (C, F).