Larissa Fischer's Avatar

Larissa Fischer

@fislarissa.bsky.social

cognitive neuroscience / doctoral researcher with @anne_maass @dzne.science / paramedic ๐ŸŒˆ

61 Followers  |  70 Following  |  8 Posts  |  Joined: 20.11.2024  |  1.6513

Latest posts by fislarissa.bsky.social on Bluesky

Longitudinal functional connectivity during rest and task is differentially related to Alzheimer's pathology and episodic memory in older adults. Fischer, Larissa; Adams, Jenna N; Molloy, Eรณin N.; et al. Scientific reportsย Vol. 15, no. 1, p. 38499

New paper out: Longitudinal functional connectivity during rest and task is differentially related to Alzheimer's pathology and episodic memory in older adults.: Fischer, Larissa; Adams, Jenna N; Molloy, Eรณin N.; et al.
Scientific reportsย Vol. 15, no. 1, p. 38499 Thanks for sharing! #dzne #papers

18.11.2025 12:28 โ€” ๐Ÿ‘ 0    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1

5/5 ๐Ÿงณ

Our findings highlight region-specific differences in longitudinal rsFC strength between โ€œnormalโ€ aging and early AD pathology and shed light on early changes in rsFC strength with AD pathology, which might already be disadvantageous for episodic memory performance in APOE4 carriers.

17.12.2024 17:49 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

4/5๐Ÿ’ก

Longitudinal increase in rsFC strength between the anterior hippocampus and the superior precuneus is associated with higher early AD pathology. Higher rsFC strength was related to cognitive decline only in APOE4 carriers.

17.12.2024 17:49 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

3/5 ๐Ÿ’ก

Longitudinal decrease in rsFC strength within the posteromedial cortex and between the posterior hippocampus and the inferomedial precuneus was associated with โ€œnormalโ€ aging. Pathology-independent lower rsFC strength was related to cognitive decline.

17.12.2024 17:49 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

2/5 ๐Ÿ’ก
In essence, hypoconnectivity was related to aging, hyperconnectivity was related to early Alzheimerโ€™s pathology.
But which specific regions were involved?!

17.12.2024 17:49 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

1/5 ๐Ÿ”Ž
We investigated resting-state functional connectivity (rsFC) in episodic network regions over two years in cognitively normal amyloid- and tau-negative older adults (โ€œnormalโ€ aging sample) and in older adults with CSF measurements (AD-biomarker sample).

17.12.2024 17:49 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Iโ€™m super happy about this project with Anne Maass, Jenna Adams, @sylviavilleneuve.bsky.social and the fantastic PREVENT-AD team!

17.12.2024 17:49 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Preview
Differential effects of aging, Alzheimer's pathology, and APOE4 on longitudinal functional connectivity and episodic memory in older adults Both aging and Alzheimer's disease (AD) affect episodic memory networks. How this relates to region-specific early differences in functional connectivity (FC), however, remains unclear. We assessed re...

Are you interested in distinguishing region-specific longitudinal changes in resting-state functional connectivity related to โ€œnormalโ€ aging and to early Alzheimerโ€™s pathology?
Then keep reading about your preregistered study and our fresh preprint! ๐Ÿง 

www.biorxiv.org/content/10.1...

17.12.2024 17:49 โ€” ๐Ÿ‘ 5    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

Iโ€˜m so proud of this team effort, thanks Nick for sharing it here! ๐Ÿ˜Š

20.11.2024 21:19 โ€” ๐Ÿ‘ 5    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

@fislarissa is following 20 prominent accounts