![]() ![]() The top predictors were medial temporal lobe structures and amygdala for the estimation of RAVLT Immediate and angular gyrus, hippocampus and amygdala for the estimation of RAVLT Percent Forgetting. In addition, the selected machine learning method provided more accurate estimates of RAVLT scores than the relevance vector regression used earlier for the estimation of RAVLT based on MRI data. The proposed approach provided highly significant cross-validated correlation between the estimated and observed RAVLT Immediate (R = 0.50 and RAVLT Percent Forgetting (R = 0.43 in a dataset consisting of 806 AD, mild cognitive impairment (MCI or healthy subjects. ![]() For this, we built a predictive model to estimate RAVLT scores from gray matter density via elastic net penalized linear regression model. The aim was to comprehensively study to what extent the RAVLT scores are predictable based on structural magnetic resonance imaging (MRI data using machine learning approaches as well as to find the most important brain regions for the estimation of RAVLT scores. We investigated the association between RAVLT scores ( RAVLT Immediate and RAVLT Percent Forgetting and the structural brain atrophy caused by AD. Several studies have shown that an impairment in RAVLT scores reflect well the underlying pathology caused by Alzheimer's disease (AD, thus making RAVLT an effective early marker to detect AD in persons with memory complaints. Rey's Auditory Verbal Learning Test scores can be predicted from whole brain MRI in Alzheimer's diseaseįull Text Available Rey's Auditory Verbal Learning Test ( RAVLT is a powerful neuropsychological tool for testing episodic memory, which is widely used for the cognitive assessment in dementia and pre-dementia conditions. ![]() Descrevemos os escores no RAVLT de acordo com faixa etária e escolaridade neste manuscrito. As médias dos escores dos subitens analisados não foram estatisticamente diferentes entre homens e mulheres, exceto no subitem recordação tardia. A escolaridade apresentou relação forte e positiva com os escores em todos os subitens analisados, exceto no aprendizado, no qual não foi verificada influência. ![]() O desempenho geral no teste diminuiu com o aumento da idade. Foi avaliado o desempenho de 130 indivÃduos, subdivididos em grupos de acordo com a idade e escolaridade. In summary, this is a pilot study that presents a profile of Brazilian adults on A1, A7, recognition and LOT subitem.O objetivo deste estudo foi avaliar o desempenho de adultos normais brasileiros no Rey Auditory Verbal Learning Test ( RAVLT, um teste destinado à avaliação da memória, e investigar a influência das variáveis idade, sexo e escolaridade no desempenho obtido, além de sugerir escores que possam ser utilizados na avaliação da memória segundo este instrumento. This manuscript describes RAVLT scores according to age and education. Mean scores of subitems analyzed did not differ significantly between men and women, except for the delayed recall subitem. Schooling presented a strong and positive relationship with scores on all subitems analyzed except learning, for which no influence was found. The performance of 130 individuals, subdivided into groups according to age and education, was assessed. Performance of normal adults on Rey Auditory Learning Test: a pilot study Desempenho de indivÃduos saudáveis no Rey Auditory Verbal Learning Test ( RAVLT: estudo pilotoĭirectory of Open Access Journals (Sweden)įull Text Available The present study aimed to assess the performance of healthy Brazilian adults on the Rey Auditory Verbal Learning Test ( RAVLT, a test devised for assessing memory, and to investigate the influence of the variables age, sex and education on the performance obtained, and finally to suggest scores which may be adopted for assessing memory with this instrument. ![]()
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