Figure 4
From: Standardization of surface electromyography utilized to evaluate patients with dysphagia
An example of normal drinking of 100 cc of water. It took this subject 15.04 sec to drink 100 cc of water in 7 swallows. The last 8th peak is a dry swallow aftereffect. Upper line = the submentalsubmandibular electrode location, lower line = the masseter location. All these muscles are almost completely relaxed before and after drinking.