Fig. 3
Effect of smoking on Electrogustometric thresholds. Box plot distribution of electrogustometric (EGM) thresholds (log) recorded in Non-Smokers (N = 48) and Smokers (N = 83) at nine loci on the tongue. (Each box plot presents from bottom to top: “•” = outliers, 5th percentile value, first quartile (Q1), median, third quartile (Q3), 95th percentile value), outliers; “+” (linear mixed model test p < 0.001)