Vanderbilt Clinical Trials

for AD cohort: 1. adult ≥60 years old 2. diagnosis of AD by a neurologist (confirmed with imaging, spinal tap, behavioral testing) 3. no prior history of other neurological diseases 4. no prior history of respiratory diseases 5. no prior history of head and neck surgery/head and neck cancer/radiation to head and neck region 6. consuming some form of oral intake 7. able to follow basic directions 8. able/willing to provide consent/assent.

for AD Cohort: 1. individual <60 years old 2. Diagnosis of another type of dementia 3. History of neurological/respiratory diseases 4. History of head and neck surgery/head and neck cancer/radiation to head and neck region 5. not consuming any oral intake 6. Unable to follow basic directions 7. Unable to provide consent based on the University of California, San Diego Brief Assessment of Capacity to Consent (UBACC), score <15 OR provide assent and a legal guardian provides consent. Inclusion criteria for care partners of individuals with AD will be: 1. care partner of an individual with AD 2. willing to complete questionnaires/participate in an interview. Exclusion Criteria for Caregivers of Individuals with AD: 1. not the primary caregiver of an individual with AD 2. unwilling to complete questionnaires/semi-structured interview Inclusion criteria for community-dwelling adults will be: 1. adult ≥60 years old 2. no prior history of neurological diseases or respiratory diseases 3. no prior history of head and neck surgery/head and neck cancer/radiation to head and neck region 4. no prior history of swallowing difficulties based on participant report. 5. Score ≥26 on the Montreal Cognitive Assessment (MOCA) Exclusion Criteria for Healthy Cohort: 1. individual <60 years old 2. history of neurological disease 3. history of respiratory disease 4. history of head and neck surgery/head and neck cancer/radiation to head and neck region 5. history of swallowing difficulties 6. Score <26 on the Montreal Cognitive Assessment (MOCA)