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Figure 5


Fig. 5. Responses of a salivary duct nerve (SDN) to distilled water, 10% sucrose solution and 20% sodium chloride (NaCl) solution applied to the mouth. Both of the two large units, a low spontaneous frequency unit with the largest amplitude (black circle) and a higher frequency unit with the second-largest amplitude, exhibited strong responses to water, sucrose and NaCl solution. Coincident occurrence of the two large units resulted in larger-amplitude potential (triangles). The short arrows indicate artefacts caused by movement of the mouth or the oesophagus. The broken line indicates the onset of taste stimulation. All four recordings were from the same preparation. Vertical bar, 0.2 mV; horizontal bar, 1 s.





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