Non-invasive Markers of Esophageal Function in Adults

Collection of patient reported symptoms and perception of health

Use of silver-silver chloride cutaneous electrogastrogram (EGG) electrodes to get myoelectrical readings

MESG measures spatiotemporal properties of magnetic fields from the esophageal slow wave and allows characterization of the propagation of the slow wave in addition to evaluation of its frequency and power distribution

Dysphagia subjects will have undergone standard of care HRM to determine placement in the achalasia or hypercontractile/spastic disorder arms