Intermittent Light Exposures in Humans: A Case for Dual Entrainment in the Treatment of Alzheimer's Disease

Circadian sleep disorders are common among American adults and can become especially acute among older adults, especially those living with Alzheimer's disease (AD) and mild cognitive impairment (MCI), leading to the exacerbation of symptoms and contributing to the development and advancement o...

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Main Authors: Mariana G. Figueiro, Sagan Leggett
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-03-01
Series:Frontiers in Neurology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fneur.2021.625698/full
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author Mariana G. Figueiro
Mariana G. Figueiro
Sagan Leggett
Sagan Leggett
author_facet Mariana G. Figueiro
Mariana G. Figueiro
Sagan Leggett
Sagan Leggett
author_sort Mariana G. Figueiro
collection DOAJ
description Circadian sleep disorders are common among American adults and can become especially acute among older adults, especially those living with Alzheimer's disease (AD) and mild cognitive impairment (MCI), leading to the exacerbation of symptoms and contributing to the development and advancement of the diseases. This review explores the connections between circadian sleep disorders, cognition, and neurodegenerative disease, offering insights on rapidly developing therapeutic interventions employing intermittent light stimuli for improving sleep and cognition in persons with AD and MCI. Light therapy has the potential to affect sleep and cognition via at least two pathways: (1) a regular and robust light-dark pattern reaching the retina that promotes circadian phase shifting, which can promote entrainment and (2) 40 Hz flickering light that promotes gamma-wave entrainment. While this is a new area of research, preliminary evidence shows the potential of dual circadian and gamma-wave entrainment as an important therapy not only for those with AD, but for others with cognitive impairment.
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spelling doaj.art-995edfdaef5c45c292260bed417446fb2022-12-21T22:35:50ZengFrontiers Media S.A.Frontiers in Neurology1664-22952021-03-011210.3389/fneur.2021.625698625698Intermittent Light Exposures in Humans: A Case for Dual Entrainment in the Treatment of Alzheimer's DiseaseMariana G. Figueiro0Mariana G. Figueiro1Sagan Leggett2Sagan Leggett3Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY, United StatesLighting Research Center, Rensselaer Polytechnic Institute, Troy, NY, United StatesLighting Research Center, Rensselaer Polytechnic Institute, Troy, NY, United StatesDepartment of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, United StatesCircadian sleep disorders are common among American adults and can become especially acute among older adults, especially those living with Alzheimer's disease (AD) and mild cognitive impairment (MCI), leading to the exacerbation of symptoms and contributing to the development and advancement of the diseases. This review explores the connections between circadian sleep disorders, cognition, and neurodegenerative disease, offering insights on rapidly developing therapeutic interventions employing intermittent light stimuli for improving sleep and cognition in persons with AD and MCI. Light therapy has the potential to affect sleep and cognition via at least two pathways: (1) a regular and robust light-dark pattern reaching the retina that promotes circadian phase shifting, which can promote entrainment and (2) 40 Hz flickering light that promotes gamma-wave entrainment. While this is a new area of research, preliminary evidence shows the potential of dual circadian and gamma-wave entrainment as an important therapy not only for those with AD, but for others with cognitive impairment.https://www.frontiersin.org/articles/10.3389/fneur.2021.625698/fullAlzheimer's diseasecircadian entrainmentflashing lightgamma entrainmentmemorysleep
spellingShingle Mariana G. Figueiro
Mariana G. Figueiro
Sagan Leggett
Sagan Leggett
Intermittent Light Exposures in Humans: A Case for Dual Entrainment in the Treatment of Alzheimer's Disease
Frontiers in Neurology
Alzheimer's disease
circadian entrainment
flashing light
gamma entrainment
memory
sleep
title Intermittent Light Exposures in Humans: A Case for Dual Entrainment in the Treatment of Alzheimer's Disease
title_full Intermittent Light Exposures in Humans: A Case for Dual Entrainment in the Treatment of Alzheimer's Disease
title_fullStr Intermittent Light Exposures in Humans: A Case for Dual Entrainment in the Treatment of Alzheimer's Disease
title_full_unstemmed Intermittent Light Exposures in Humans: A Case for Dual Entrainment in the Treatment of Alzheimer's Disease
title_short Intermittent Light Exposures in Humans: A Case for Dual Entrainment in the Treatment of Alzheimer's Disease
title_sort intermittent light exposures in humans a case for dual entrainment in the treatment of alzheimer s disease
topic Alzheimer's disease
circadian entrainment
flashing light
gamma entrainment
memory
sleep
url https://www.frontiersin.org/articles/10.3389/fneur.2021.625698/full
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