Diagnosis of Alzheimer's Disease Using Event Related Potentials

NCT ID: NCT02957227

Last Updated: 2022-09-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Total Enrollment

170 participants

Study Classification

OBSERVATIONAL

Study Start Date

2016-07-31

Study Completion Date

2023-07-31

Brief Summary

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This study evaluates the use of an EEG device using Event Related Potentials to help diagnose Alzheimer's Disease in the outpatient clinical setting.

Detailed Description

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The objective of this study is to improve the accuracy of diagnosis of Alzheimer's disease in a clinic setting using an EEG device to measure event related potentials.

This study will recruit patients who are being seen with a memory complaint or the first time. It will be prospective in nature. Subjects will initially be evaluated by clinicians and then clinicians will fill out a rating questionnaire as to their level of certainty of various possible dementia diagnoses. Then, during the testing portion of the study, subjects will return to have an EEG test completed measuring event related potentials during an acoustic oddball paradigm task. The EEG will be completed by a technician who has no knowledge of the subject's clinical diagnosis. After the EEG is performed, the data will be evaluated by the study clinician in a blinded fashion. The clinician will log the EEG results as being either consistent with Alzheimer's disease or not. Finally, there will be analysis of the initial clinical rating by clinicians in comparison to a given subject's EEG results and interpretation. This will allow determination as to whether or not the clinical diagnosis was in agreement or disagreement with the EEG data and interpretation. At this time point a second clinician rating questionnaire will be completed to assess the current level of confidence and diagnostic certainty in light of the now revealed EEG data in addition to clinical data. There will also be quantitative analysis of MRI structural data regarding regional atrophy patterns as well as Amyloid PET data for some of the participants which will act as a diagnostic gold standard.

An additional aim of this study is to investigate patterns of impairment on memory testing in older adults who are malingering and reporting a memory impairment in the absence of a disorder. This aim will involve testing healthy older adults using EEG and also testing memory impaired older adults with AD and comparing the results, as well as comparing the two groups results on neuropsychologic measures of effort including the Test of Memory and Malingering (TOMM).

Impact/Significance: This proposed study could allow for increased accuracy and diagnostic certainty of the correct diagnosis among memory impaired patients and could allow for the incorporation of a new clinical technique, EEG testing among memory impaired patients.

Conditions

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Mild Cognitive Impairment

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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1

cohort 1: Older adults with memory impairment

No intervention is part of this study but patients use an EEG device during observational data collection.

Intervention Type DEVICE

2

cohort 2: Age matched healthy controls

No intervention is part of this study but patients use an EEG device during observational data collection.

Intervention Type DEVICE

Interventions

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No intervention is part of this study but patients use an EEG device during observational data collection.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

cohort 2: Older adults who test normally on neuropsychologic testing and have no history of neurologic disorders.
Minimum Eligible Age

50 Years

Maximum Eligible Age

100 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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VA Boston Healthcare System

FED

Sponsor Role lead

Responsible Party

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Katherine Turk

Neurologist

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Katherine Turk, MD

Role: PRINCIPAL_INVESTIGATOR

VA, BU

Locations

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VA Boston Healthcare

Jamaica Plain, Massachusetts, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Katherine Turk, MD

Role: CONTACT

847-364-2139

Facility Contacts

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Katherine Turk

Role: primary

857-364-2139

Other Identifiers

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5I01CX000736-02

Identifier Type: NIH

Identifier Source: secondary_id

View Link

5I01CX000736-02-COG

Identifier Type: -

Identifier Source: org_study_id

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