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FI
3.547
2016 Dementia and Geriatric Cognitive Disorders
The Relational and Item-Specific Encoding Task in Mild Cognitive Impairment and Alzheimer Disease.
Sousa A, Gomar JJ, Ragland JD, Conejero-Goldberg C, Buthorn J, Keehlisen L, Huey TE, Koppel J, Gordon ML, Christen E, Goldberg TE

Limited service to collaborators of the network of Sisters Hospitalarias Centers. You will receive a message in your email with a link to download this article.

Abstract

The Relational and Item-Specific Encoding task (RISE) measures episodic memory subcomponents, including item-specific and relational encoding of to-be-remembered stimuli. These memory components are neurobiologically relevant because they may engage distinct subregions of the medial temporal lobe, perirhinal and entorhinal cortices, parahippocampus, and hippocampus.A total of 125 participants, including 84 healthy controls (HC), 22 mild cognitive impairment-diagnosed and 19 Alzheimer disease (AD)-diagnosed participants, were administered the RISE and neuropsychological measures. Stepwise linear regressions assessed prediction of functional ability from RISE d' measures. ANOVAs and logistic regressions determined the ability of the RISE to discriminate between the diagnostic groups. In addition, the psychometric properties of the RISE were examined.RISE measures predicted diagnosis with pseudo R2 values in the range of 0.25-0.30. Receiver operating characteristic curves demonstrated adequate sensitivity and specificity with areas under the curve in the range of 0.78-0.98. Memory following relational encoding was a significant predictor of everyday functional competence. The RISE had acceptable psychometric properties, with the exception of floor effects in the AD group.The RISE measures significantly predicted diagnosis and predicted everyday functional competence. The RISE offers unique advantages in the assessment of HC and individuals with preclinical AD.
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Última modificación: 22/03/2024