Figure 5: Hesitation to swallow and aspiration in a 61-year-old man with Parkinson’s disease. (A) The swallowing waveform with the magnetic swallowing monitoring device. At first, movement of the larynx was observed, but no accompanying sound waveform peak was observed (the broken line above the temporal axis). A sound wave appeared with a time lag. A swallowing waveform appeared with an accompanying sound waveform (I). Swallowing then occurred twice (II, III). Afterward, the sound waveform was disordered. The upper waveform represents the distance waveform, and the lower waveform represents the sound waveform. (B) On videofluorography, this patient was found to have aspirated the liquid (arrow).