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CO2-laser for Adelta/C-fiber function assessment?
- To: Multiple recipients of list CLIN_NEUROPHYSIOL <CLIN_NEUROPHYSIOL@LISTSERV.UMU.SE>
- Subject: CO2-laser for Adelta/C-fiber function assessment?
- From: Erik Nordh <erik.nordh@NEURO.UMU.SE>
- Date: Tue, 9 Mar 1999 11:13:07 +0100
- Reply-To: Professional discussions of neurophysiology <CLIN_NEUROPHYSIOL@LISTSERV.UMU.SE>
- Sender: Professional discussions of neurophysiology <CLIN_NEUROPHYSIOL@LISTSERV.UMU.SE>
Quantitative sensory testing (QST; several different rationales for
stimulus presentation may be used) is often used to assess the function in
thin myelinated and unmyelinated nerve fibers in humans. A putative
disadvantage with this psychophysical method is that it only informs about
the prescence of a disturbance in the specific modality; it does not allow
any conclusions about at which level the nervous system may be
malfunctioning. However, when reviewing the litterature I've found a few
reports in which CO2-laser stimulation have been used to assess such thin
fiber function.
Does anyone of the list members know if there are commercially available
CO2-lasers which can easily be connected to standard EMG/SEP-machines (e.g.
the Nicolet Viking or the KeyPoint)? Has anyone possibly seen other
solutions, e.g. diode-arrays, or similar?
Regards
/Erik