Software Validation Study-Cognitive Status Indicator

Inclusion Criteria:

Unimpaired subjects:

To be eligible to participate in this study, an individual must meet all of the following criteria:

1. Provision of signed and dated informed consent form

2. Stated willingness to comply with all study procedures and availability for theduration of the study

3. Male or female, aged 65 to 90 at the time of consent

4. Have a Salzburg Dementia Test Prediction (SDTP) score >= 24.

5. Informant, available and willing (remotely or in-person) to provide informationabout subject cognitive functioning

6. No Medical History of cognitive impairment

Mild Cognitive Impairment subjects:

To be eligible to participate in this study, an individual must meet all of the following criteria:

1.

1. Provision of signed and dated informed consent form

2. Stated willingness to comply with all study procedures and availability for theduration of the study

3. Male or female, aged 65 to 90 at the time of consent

4. Have a Salzburg Dementia Test Prediction (SDTP) score < 24.

5. Informant, available and willing (remotely or in-person) to provide informationabout subject cognitive functioning

6. Suspected or diagnosed with a mild cognitive issue

Dementia subjects:

To be eligible to participate in this study, an individual must meet all of the following criteria:

1. Provision of signed and dated informed consent form-legally authorizedrepresentative or individual

2. Stated willingness to comply with all study procedures and availability for theduration of the study

3. Male or female, aged 65 to 90 at the time of consent

4. Have a Salzburg Dementia Test Prediction (SDTP) score < 24.

5. Informant, available and willing (remotely or in-person) to provide informationabout subject cognitive functioning

6. Exhibiting and diagnosed with moderate or severe cognitive issue

Informants:

To be eligible to participate as an informant in this study, an individual must meet all of the following criteria:

1. Provision of signed and dated informed consent form 2. Typically spends 2 or morehours per month with subject. 3. Available and willing (remotely or in-person) toprovide information about subject cognitive functioning

• Exclusion Criteria:

An individual who meets any of the following criteria will be excluded from participation in this study:

1. Currently experiencing a skin disease on scalp that would affect electrode contactsin the opinion of the user