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. Author manuscript; available in PMC: 2011 Oct 1.
Published in final edited form as: Pain. 2010 Jun 11;151(1):45–52. doi: 10.1016/j.pain.2010.05.016

Table 2.

Results from the graphesthesia task as mean and 95% confidence intervals. The information transfer of correct responses in the graphesthesia tasks was higher in the tactile tasks than the painful heat tasks. Adding trials increased the information transfer for the painful heat (P < 0.001) but not for tactile tasks (P > 0.05, three-way ANOVA and Tukey).

Forearm Abdomen
Probability of correct response (%) Tactile 89 (82–97) 86 (79–94)
Heat 31 (23–40) 44 (37–51)
Information transfer of correct responses (bits/response) Tactile 3.1 (3.0–3.3) 3.1 (3.0–3.2)
Heat 1.5 (1.1–2.0) 2.1 (1.8–2.3)
Total information transfer (bits/response) Tactile 3.2 (3.1–3.3) 3.2 (3.1–3.3)
Heat 2.5 (2.4–2.6) 2.7 (2.6–2.8)