Neuroelectrical Biomarkers for Alzheimer's Disease Stages

Study Overview
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Brief Summary
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Recent diagnostic criteria for Alzheimer's disease (AD) recognize an extended spectrum of AD stages as part of the disease, including a preclinical stage. This underscores the importance of early prognosis of AD when it is still possible to influence the course of the disorder. The investigators propose a comprehensive project which will target the data-driven modeling of the disease development. This goal will be achieved by creating and validating a battery of new sensitive biomarkers for clinical evaluation and prediction of AD in individuals. The AD-related brain changes will be assessed by noninvasive functional EEG measured during an episodic memory task in subjects at different stages of AD, as well as in healthy controls. The novel functional biomarkers will be extracted using a rigorous multistage selection procedure involving advanced methods for feature extraction, as well as statistics and classification for optimal selection. The ESTIMATE project will serve as a first step in an extensive array of research procedures which will enable the early clinical identification of Alzheimer's disease in elderly individuals who could then take advantage of preventive pharmaceutical therapies.

Official Title
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NEw approacheS for The dIagnosis of AlzeiMer's diseAse Through neuroElectrical Changes in the Brain

Conditions
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Alzheimer Disease

Intervention / Treatment
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* Device: EEG


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age: 70-85 years old Presence of memory impairment Completed educational level: middle school Visual and auditory acuity: normal or corrected-to-normal Exclusion Criteria: Monogenic AD Presence of a neurological disorder Stroke that has occurred in the last three months Prohibited medications Residence in skilled nursing facility Illiteracy, is unable to count or to read Claustrophobia

Ages Eligible for Study
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Minimum Age: 70 Years
Maximum Age: 85 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Prodromal AD<br>Presence of memory impairment Absence of impairment in activities of daily life EEG | Device: EEG<br>* EEG recorded during a resting condition and during an episodic memory task condition<br>* Other names: Electrical Geodesics Incorporated;|
| Experimental: Mild AD dementia<br>Presence of memory impairment Presence of impairment in activities of daily life EEG | Device: EEG<br>* EEG recorded during a resting condition and during an episodic memory task condition<br>* Other names: Electrical Geodesics Incorporated;|
| Experimental: Healthy control group<br>Absence of memory impairment Absence of impairment in activities of daily life Absence of known neurological conditions EEG | Device: EEG<br>* EEG recorded during a resting condition and during an episodic memory task condition<br>* Other names: Electrical Geodesics Incorporated;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Frequency band charactersitics of the electrophysiological brain response |  | Baseline | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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EEG, ERP, Alzheimer's disease, Dementia, Prodromal, Biomarkers