Contact heat evoked potentials: reliable acquisition from lower extremities

Contact heat evoked potentials (CHEPs) reflect cortical responses of Aδ-nociceptors activated by noxious heat stimuli (Greffrath et al. 2007; Baumgartner et al. 2012). In addition to Aδ-fibers, C-fibers are also known to be involved in the perception of contact heat. The reliable recording of C-fiber volley is, however, extremely challenging (Magerl et al. 1999).

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