... (Fig. 4C-b). In particular, the fNIRS activity focuses on the excitatory behaviours to Vibration Analysis and Control – New Trends and Developments 342 particular, we used the 89 Hz-S from ... 1 min, and then those during 89 and 114 Hz-S vibrotactile stimuli were recorded for 2 min each. A 1-min rest period was taken between Vibration Analysis and Control – New Trends and Developments ... parotid and submandibular glands was 89 Hz-S (Fig. 2A-a, 2B-a; resting salivation, 0 .89 ±0.61 mL; 89 Hz-S, 1.46±0.90 mL; 89 Hz-D, 1.04±0. 78 mL; 114 Hz-S, 0.93±0.76 mL and 114 Hz-D, 0 .80 ±0.53...