Inclusion Criteria:

• 1. Subject was treated for cancer in the oral cavity, oropharynx, hypopharynx, larynx, or for an unknown primary at least 5 years prior to enrollment. Subjects may have had surgery as long as a minimum dose of 50 Gy of radiation was part of the treatment;
• 2. Subject must have a current swallow complaint or impairment; these include but are not limited to reduced oral intake, perceived difficulty with bolus transport (e.g. feeling of food sticking in throat); aspiration on various bolus consistencies;
• 3. Ability to follow directions and engage in a program of rehabilitation

Exclusion Criteria:

• 1. the subject's swallowing problems are unrelated to treatment for HNCA (e.g. cognitive impairment, history of stroke);
• 2. the subject presents with contraindications for EMST as specified in the EMST150 package insert unless cleared for participation by the subject's physician. These conditions include untreated hypertension, untreated gastroesophageal reflux diseas, recent stroke, lung disease, and pregnancy.