http://www.medscape.com/viewarticle/563262_6
The references that have to do with the technique from the above article:
Truini A et al. (2004) Laser evoked potentials for assessing sensory neuropathy in human patients. Neurosci Lett 361: 25–28
Chiang HY et al. (2005) Skin denervation, neuropathology, and neuropathic pain in a laserinduced focal neuropathy. Neurobiol Dis 18: 40–53
Perretti A et al. (2003) Is Ross syndrome a dysautonomic disorder only? An electrophysiologic and histologic study. Clin Neurophysiol 114: 7–16
Granovsky Y et al. (2005) Thermoreceptive innervation of human glabrous and hairy skin: a contact heat evoked potential analysis. Pain 115: 238–247
Truini seems to be a big resercher in the area of alternate ways to assess small-fiber syndromes; take a look at:
http://www.biomedcentral.com/1471-2377/7/21
http://brain.oxfordjournals.org/cgi/...t/awg227v1.pdf
http://content.nejm.org/cgi/reprint/349/3/305.pdf