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. 2007 Dec 4;3:61. doi: 10.1186/1744-9081-3-61

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Copyright © 2007 Tommerdahl et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Performance metrics obtained at each of the pairs of stimulus sites under 3 different conditions of concurrent stimulation (0, 25 Hz, and 200 Hz). Panel A: Hand dorsum. Note that TOJ thresholds are significantly elevated with the presence of both the 25 Hz and 200 Hz conditioning stimuli (p < 0.01). Panel B: Unilateral digit tips 2 & 3. The 200 Hz conditioning stimulus, although it has an impact on the TOJ measure (p < 0.01) does not have as pronounced an effect on the digit tips as on the hand dorsum. Panel C: Bilateral digit tips 2. Conditioning stimuli had no significant effect when applied on bilateral digit tips (p > 0.21).