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*open the 2nd and 4th Saturday
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Today's Hours
Folly Beach Library
9 a.m. - 2 p.m.
*open the 2nd and 4th Saturday
*open the 2nd and 4th Saturday
Phone: (843) 588-2001
Edgar Allan Poe/Sullivan's Island Library
Closed for renovations
Phone: (843) 883-3914
West Ashley Library
9 a.m. - 5 p.m.
Phone: (843) 766-6635
Wando Mount Pleasant Library
9 a.m. - 5 p.m.
Phone: (843) 805-6888
Village Library
9 a.m. - 1 p.m.
Phone: (843) 884-9741
St. Paul's/Hollywood Library
9 a.m. - 5 p.m.
Phone: (843) 889-3300
Otranto Road Library
9 a.m. - 5 p.m.
Phone: (843) 572-4094
Mt. Pleasant Library
9 a.m. – 5 p.m.
Phone: (843) 849-6161
McClellanville Library
9 a.m. – 1 p.m.
Phone: (843) 887-3699
Keith Summey North Charleston Library
9 a.m. - 5 p.m.
Phone: (843) 744-2489
John's Island Library
9 a.m. - 5 p.m.
Phone: (843) 559-1945
Hurd/St. Andrews Library
9 a.m. - 5 p.m.
Phone: (843) 766-2546
Miss Jane's Building (Edisto Library Temporary Location)
9 a.m. – 1 p.m.
Phone: (843) 869-2355
Dorchester Road Library
9 a.m. - 5 p.m.
Phone: (843) 552-6466
John L. Dart Library
9 a.m. - 5 p.m.
Phone: (843) 722-7550
Baxter-Patrick James Island
9 a.m. - 5 p.m.
Phone: (843) 795-6679
Main Library
9 a.m. - 5 p.m.
Phone: (843) 805-6930
Bees Ferry West Ashley Library
9 a.m. - 5 p.m.
Phone: (843) 805-6892
Mobile Library
Closed
Phone: (843) 805-6909
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APOE4 Status is Related to Differences in Memory-Related Brain Function in Asymptomatic Older Adults with Family History of Alzheimer's Disease: Baseline Analysis of the PREVENT-AD Task Functional MRI Dataset.
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- Author(s): Rabipour, Sheida; Rajagopal, Sricharana; Yu, Elsa; Pasvanis, Stamatoula; Lafaille-Magnan, Marie-Elyse; Breitner, John; Rajah, M. Natasha; El Haj, Mohammed; PREVENT-AD Research Group
- Source:
Journal of Alzheimer's Disease; 2020, Vol. 76 Issue 1, p97-119, 23p- Subject Terms:
FUNCTIONAL magnetic resonance imaging; ALZHEIMER'S disease; TASK analysis; APOLIPOPROTEIN E; FAMILY history (Medicine); APOLIPOPROTEIN E4; EPISODIC memory; BRAIN physiology; BRAIN; MEMORY; STATISTICS; DATABASES; RESEARCH; RESEARCH methodology; MAGNETIC resonance imaging; MEDICAL cooperation; EVALUATION research; COMPARATIVE studies; APOLIPOPROTEINS; MEDICAL history taking; SYMPTOMS; DATA analysis; LONGITUDINAL method - Source:
- Additional Information
- Subject Terms:
- Abstract:
Background: Episodic memory decline is one of the earliest symptoms of late-onset Alzheimer's disease (AD). Older adults with the apolipoprotein E ɛ4 (+APOE4) genetic risk factor for AD may exhibit altered patterns of memory-related brain activity years prior to initial symptom onset.Objective: Here we report the baseline episodic memory task functional MRI results from the PRe-symptomatic EValuation of Experimental or Novel Treatments for Alzheimer's Disease cohort in Montreal, Canada, in which 327 healthy older adults were scanned within 15 years of their parent's conversion to AD.Methods: Volunteers were scanned as they encoded and retrieved object-location spatial source associations. The task was designed to discriminate between brain activity related to spatial source recollection and object-only (recognition) memory. We used multivariate partial least squares (PLS) to test the hypothesis that +APOE4 adults with family history of AD would exhibit altered patterns of brain activity in the recollection-related memory network, comprised of medial frontal, parietal, and medial temporal cortices, compared to APOE4 non-carriers (-APOE4). We also examined group differences in the correlation between event-related brain activity and memory performance.Results: We found group similarities in memory performance and in task-related brain activity in the recollection network, but differences in brain activity-behavior correlations in ventral occipito-temporal, medial temporal, and medial prefrontal cortices during episodic encoding.Conclusion: These findings are consistent with previous literature on the influence of APOE4 on brain activity and provide new perspective on potential gene-based differences in brain-behavior relationships in people with first-degree family history of AD. [ABSTRACT FROM AUTHOR] - Abstract: Copyright of Journal of Alzheimer's Disease is the property of IOS Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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