OBJECTIVE: Accurate identification of the earliest cognitive changes associated with Alzheimer's disease (AD) is critically needed. Item-level information within tests of category fluency, such as lexical frequency, harbors valuable information about the integrity of semantic networks affected early in AD. To determine the potential of lexical frequency as a cognitive marker of AD risk, we investigated whether lexical frequency of animal fluency output differentiated APOE ε4 carriers from noncarriers in a cross-sectional design among older African-American adults without dementia. METHOD: We analyzed animal fluency performance using mean number of items and mean lexical frequency among 230 cognitively normal African Americans with and without the APOE ε4 allele. RESULTS: Lexical frequency was higher in APOE ε4 carriers than noncarriers when analyzed as a mean score and within time bins. In contrast, we found no group difference in the number of items produced. Lexical frequency was particularly sensitive to ε4 status after the first 10 s of the 60-s animal fluency task. CONCLUSION: Our results suggest that psycholinguistic features may hold value as a cognitive biomarker for identifying people at high risk of AD. (PsycINFO Database Record (c) 2019 APA, all rights reserved).
OBJECTIVE: Accurate identification of the earliest cognitive changes associated with Alzheimer's disease (AD) is critically needed. Item-level information within tests of category fluency, such as lexical frequency, harbors valuable information about the integrity of semantic networks affected early in AD. To determine the potential of lexical frequency as a cognitive marker of AD risk, we investigated whether lexical frequency of animal fluency output differentiated APOE ε4 carriers from noncarriers in a cross-sectional design among older African-American adults without dementia. METHOD: We analyzed animal fluency performance using mean number of items and mean lexical frequency among 230 cognitively normal African Americans with and without the APOE ε4 allele. RESULTS: Lexical frequency was higher in APOE ε4 carriers than noncarriers when analyzed as a mean score and within time bins. In contrast, we found no group difference in the number of items produced. Lexical frequency was particularly sensitive to ε4 status after the first 10 s of the 60-s animal fluency task. CONCLUSION: Our results suggest that psycholinguistic features may hold value as a cognitive biomarker for identifying people at high risk of AD. (PsycINFO Database Record (c) 2019 APA, all rights reserved).
Authors: Reisa A Sperling; Paul S Aisen; Laurel A Beckett; David A Bennett; Suzanne Craft; Anne M Fagan; Takeshi Iwatsubo; Clifford R Jack; Jeffrey Kaye; Thomas J Montine; Denise C Park; Eric M Reiman; Christopher C Rowe; Eric Siemers; Yaakov Stern; Kristine Yaffe; Maria C Carrillo; Bill Thies; Marcelle Morrison-Bogorad; Molly V Wagster; Creighton H Phelps Journal: Alzheimers Dement Date: 2011-04-21 Impact factor: 21.566
Authors: Mark W Logue; Matthew Schu; Badri N Vardarajan; Jacki Buros; Robert C Green; Rodney C P Go; Patrick Griffith; Thomas O Obisesan; Rhonna Shatz; Amy Borenstein; L Adrienne Cupples; Kathryn L Lunetta; M Daniele Fallin; Clinton T Baldwin; Lindsay A Farrer Journal: Arch Neurol Date: 2011-12
Authors: E H Corder; A M Saunders; W J Strittmatter; D E Schmechel; P C Gaskell; G W Small; A D Roses; J L Haines; M A Pericak-Vance Journal: Science Date: 1993-08-13 Impact factor: 47.728
Authors: M X Tang; Y Stern; K Marder; K Bell; B Gurland; R Lantigua; H Andrews; L Feng; B Tycko; R Mayeux Journal: JAMA Date: 1998-03-11 Impact factor: 56.272
Authors: M X Tang; G Maestre; W Y Tsai; X H Liu; L Feng; W Y Chung; M Chun; P Schofield; Y Stern; B Tycko; R Mayeux Journal: Am J Hum Genet Date: 1996-03 Impact factor: 11.025
Authors: M W Bondi; D P Salmon; A U Monsch; D Galasko; N Butters; M R Klauber; L J Thal; T Saitoh Journal: Neurology Date: 1995-12 Impact factor: 9.910
Authors: Jet M J Vonk; Miguel Arce Rentería; Valerie M Medina; Margaret A Pericak-Vance; Goldie S Byrd; Jonathan Haines; Adam M Brickman; Jennifer J Manly Journal: J Alzheimers Dis Date: 2019 Impact factor: 4.472
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