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Neurophysiological Biomarkers for Lewy Body Dementias

Overview
Publisher Elsevier
Specialties Neurology
Psychiatry
Date 2015 Jul 18
PMID 26183755
Citations 15
Authors
Affiliations
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Abstract

Objective: Lewy body dementias (LBD) include both dementia with Lewy bodies (DLB) and Parkinson's disease with dementia (PDD), and the differentiation of LBD from other neurodegenerative dementias can be difficult. Currently, there are few biomarkers which might assist early diagnosis, map onto LBD symptom severity, and provide metrics of treatment response. Traditionally, biomarkers in LBD have focussed on neuroimaging modalities; however, as biomarkers need to be simple, inexpensive and non-invasive, neurophysiological approaches might also be useful as LBD biomarkers.

Methods: In this review, we searched PubMED and PsycINFO databases in a semi-systematic manner in order to identify potential neurophysiological biomarkers in the LBDs.

Results: We identified 1491 studies; of these, 37 studies specifically examined neurophysiological biomarkers in LBD patients. We found that there was substantial heterogeneity with respect to methodologies and patient cohorts.

Conclusion: Generally, many of the findings have yet to be replicated, although preliminary findings reinforce the potential utility of approaches such as quantitative electroencephalography and motor cortical stimulation paradigms.

Significance: Various neurophysiological techniques have the potential to be useful biomarkers in the LBDs. We recommend that future studies focus on maximising the diagnostic specificity and sensitivity of the most promising neurophysiological biomarkers.

Citing Articles

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The high cost of care and limited evidence on cost-effective strategies for Lewy body dementia: systematic review of evidence.

Boland E, Fitzpatrick R, Ryan D, Kane J, Betzhold S, Leroi I BJPsych Open. 2024; 10(1):e20.

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Early detection of Parkinson's disease: Systematic analysis of the influence of the eyes on quantitative biomarkers in resting state electroencephalography.

Gimenez-Aparisi G, Guijarro-Estelles E, Chornet-Lurbe A, Ballesta-Martinez S, Pardo-Hernandez M, Ye-Lin Y Heliyon. 2023; 9(10):e20625.

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EEG-Derived Functional Connectivity Patterns Associated with Mild Cognitive Impairment in Parkinson's Disease.

Pelaez Suarez A, Berrillo Batista S, Pedroso Ibanez I, Casabona Fernandez E, Fuentes Campos M, Chacon L Behav Sci (Basel). 2021; 11(3).

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The Role of EEG in the Diagnosis, Prognosis and Clinical Correlations of Dementia with Lewy Bodies-A Systematic Review.

Law Z, Todd C, Mehraram R, Schumacher J, Baker M, LeBeau F Diagnostics (Basel). 2020; 10(9).

PMID: 32825520 PMC: 7555753. DOI: 10.3390/diagnostics10090616.


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