Dementia	A progressive, irreversible decline in mental function
AT Device	AT device is defined as any item, piece of equipment, or product system whether acquired off the shelf, modified or customized that is used to increase, maintain, or improve functional capabilities of individuals with disabilities.
Caregivers or Carers	A caregiver is someone, typically over age 18, who provides care for another. It may be a person who is responsible for the direct care, protection, and supervision of children in a childcare home, or someone who tends to the needs of the elderly or disabled. It is generally one who assists another person who is no longer able to perform the critical tasks of personal or household care necessary for everyday survival.