fig10

Figure 10. (A) Schematics of electrical and chemical activation of some senses on the tongue (left) to determine whether the taste was related to the distribution of taste bud zones (middle), and the FTEAS device developed to electrically stimulate the tongue and detect activated cell-firing-related signals from each zone of the tongue simultaneously; (B) exploded-view schematic of FTEAS, and schematic of FTEAS showing FTEA, PLVAPS, and the data-acquisition module; (C) schematic illustration of the rat in vivo experiments, spike signals recorded from eight zones of the rat’s tongue, and zone-distribution radar map of the spike counts induced by chemical and electrical stimulations. This figure is quoted with permission from Huang et al.^[123]. FTEAS: Flexible tongue electrode array system; PLVAPS: portable low-voltage adjustable power supply.