Fig. 5From: Effects of transcranial direct current stimulation on cough reflex and urge-to-cough in healthy young adultsComparison of urge-to-cough (UTC) between the sham and cathodal modes. A LogCu in each group. B LogC0max in each group. C The UTC log–log slope in each group. Open circles indicate the value of each subject. Closed circles and error bars indicate the mean and S.D. in each group, respectively. LogCu = the log transformation of concentration of citric acid at a threshold of UTC. LogC0max = the maximum concentration of citric acid causing zero time of cough. UTC log–log slope = the slope between UTC scores and citric acid concentration on a log–log scaleBack to article page