Homotopic effect of 10 Hz CES on pain perception.

<p>A. Pain intensity evoked by SES. No changes were found after 10 Hz CES for the perception intensity of SES. No differences were found between the two sessions. B. HPT assessment. The HPT increased after 10 Hz CES (10 min and 20 min in the post conditioning period) then gradually returned to the baseline. The HPT in session one was higher than in session two.