Fig. 11

Relationship between preference ratios in behavioral experiments and Net responses in electrophysiological experiments. The Net response was calculated as (S_CT + S_NG) − (Q_CT + Q_NG). A linear relationship exists between preference and the Net response. The Spearman correlation coefficient for these two parameters was 0.85 (p < 0.01). Hatched squares indicate bitter stimuli (they stimulated only Q fibers); grey circles—sweeteners, which stimulated both Q and S fibers, black circles—sweeteners which stimulated only S fibers, white circles—sweeteners which did not stimulate any fibers. The open triangle depicts citric acid before miraculin and the inverted black triangle—citric acid after miraculin treatment [60]