0042 Rest-activity-patterns and Daytime Napping Differ Across Alzheimer’s Disease Phenotypes Article Swipe
Esther Li
,
Christine M. Walsh
,
Leslie Yack
,
Neus Falgàs
,
Natalie Pandher
,
Harli Grant
,
Joel H. Kramer
,
Renaud La Joie
,
Gil D. Rabinovici
,
Bruce Miller
,
Maria Luisa Gorno‐Tempini
,
Kamalini G. Ranasinghe
,
Keith Vossel
,
Lea T. Grinberg
,
Thomas C. Neylan
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1093/sleep/zsaf090.0042
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1093/sleep/zsaf090.0042
Introduction Sleep disruption in Alzheimer’s disease (AD) is common, linked to cognitive decline, and a major cause of institutionalization. While AD is associated with increased daytime napping, nocturnal wakefulness, and disrupted rest-activity rhythms (RAR), differences between amnestic (amAD) and atypical (atypAD; non-amnestic presentation) phenotypes remain underexplored. Our goal is to assess daytime napping and RAR across AD phenotypes: amnestic AD (amAD) and atypical AD (atypAD; non-amnestic presentation). Since sleep disturbances in amAD involves increased nocturnal awakenings and a decrease in total sleep, we hypothesized that RAR disruption would be amAD>atypAD> cognitively healthy older adults (HC), and that amAD have more frequent naps than atypAD. Methods Philips Spectrum PRO actigraphy watch was used to assess RAR in 17 amAD (8 females, Age: 74.3±9.3), 10 atypAD (4 females, Age: 69.6±9.8) and 11 HC (9 females, Age: 80±7.9). Daytime naps were assessed using 8-hour daytime EEG recordings in an independent cohort of 8 atypAD (5 females, Age: 61.1±5.6) and 9 amAD (5 females, Age: 64.4±10.7). Preliminary actigraphy daytime sleep bouts were assessed in n=21 amAD and n=7 atypAD. Results RAR interdaily stability (IS) was divided into tertiles. A higher proportion of the amAD group were in the lower IS group, while greater proportions of HC and atypAD were in the highest IS tertile. Similar findings were seen for relative amplitude and activity during consecutive 10-hr periods of maximum activity. Using daytime continuous EEG recordings, we determined that amAD had a greater number of 5-minute or longer daytime sleep bouts than atypAD (62.5% vs 22.2% individuals slept more than 5mins/hr, respectively). There were also more daytime sleep bouts (based on actigraphy) in amAD (25.11 ± 8.7 bouts) as compared to atypAD (18.1 ± 2.9 bouts, p< 0.05). Conclusion Overall, actigraphy data and independent daytime EEG data suggest a more destabilized RAR in amAD compared to atypAD, with more wake disruptions and daytime sleep intrusions. These findings highlight the importance of distinguishing variants of AD in characterizing sleep/wake phenotypes. Future work will examine if differing sleep/wake features across AD variants are driven by differences in underlying neuropathology. Support (if any) Rainwater charitable foundation, Hillblom Foundation, NIH 01AG060477, R01AG064314.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1093/sleep/zsaf090.0042
- https://academic.oup.com/sleep/article-pdf/48/Supplement_1/A18/63223362/zsaf090.0042.pdf
- OA Status
- bronze
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4410502946
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4410502946Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1093/sleep/zsaf090.0042Digital Object Identifier
- Title
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0042 Rest-activity-patterns and Daytime Napping Differ Across Alzheimer’s Disease PhenotypesWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
-
2025Year of publication
- Publication date
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2025-05-01Full publication date if available
- Authors
-
Esther Li, Christine M. Walsh, Leslie Yack, Neus Falgàs, Natalie Pandher, Harli Grant, Joel H. Kramer, Renaud La Joie, Gil D. Rabinovici, Bruce Miller, Maria Luisa Gorno‐Tempini, Kamalini G. Ranasinghe, Keith Vossel, Lea T. Grinberg, Thomas C. NeylanList of authors in order
- Landing page
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https://doi.org/10.1093/sleep/zsaf090.0042Publisher landing page
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https://academic.oup.com/sleep/article-pdf/48/Supplement_1/A18/63223362/zsaf090.0042.pdfDirect link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
bronzeOpen access status per OpenAlex
- OA URL
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https://academic.oup.com/sleep/article-pdf/48/Supplement_1/A18/63223362/zsaf090.0042.pdfDirect OA link when available
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Daytime, Alzheimer's disease, Medicine, Rest (music), Phenotype, Circadian rhythm, Disease, Neuroscience, Internal medicine, Psychology, Biology, Genetics, Gene, Geology, Atmospheric sciencesTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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10Other works algorithmically related by OpenAlex
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