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. Author manuscript; available in PMC: 2013 Jul 21.
Published in final edited form as: Dysphagia. 2012 Jan 4;27(3):418–426. doi: 10.1007/s00455-011-9385-6

Figure 2.

Figure 2

Spatiotemporal plots from one subject displaying normal swallow (left), effortful swallow (middle), and the Mendelsohn maneuver (right). Velopharyngeal pressure (A) and post-closure upper esophageal sphincter pressure (B) are elevated in both maneuvers, while pre-opening upper esophageal sphincter pressure is decreased (C). Duration of velopharyngeal pressure is prolonged in the Mendelsohn maneuver (D). Descent of the upper esophageal sphincter can be easily observed (E) at the conclusion of the Mendelsohn maneuver.