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Neuropsicologia Latinoamericana

On-line version ISSN 2075-9479


CORES, Evangelina V. et al. Influence of working memory in two tests used for episodic memory assessment in multiple sclerosis. Neuropsicologia Latinoamericana [online]. 2013, vol.5, n.3, pp. 1-6. ISSN 2075-9479.

Episodic memory is a system of memory related to the ability to recall events and experiences, contextualized in time and in space. Working memory is an active system of temporary storage and manipulation of information. The evaluation of verbal episodic memory in patients with Multiple Sclerosis typically uses two techniques: Selective Reminding Test (SRT) and California Verbal Learning Test (CVLT). It has been suggested that the differences between the techniques could be associated in varying degrees to the demands of working memory during the performance. This study attempts to test this hypothesis. Thirty-three patients with Multiple Sclerosis were evaluated by means of the SRT, the CVLT, Backwards Digits and the Paced Auditory Inverse Serial Addition Test (PASAT). Among the main findings, a significant and direct correlation between PASAT and SRT scores was found (r = .56, p = .001). In logistic regression analysis, only the score of SRT (R2 = 0.315, F = 13,790, p < .01) was found to be a predictor of PASAT. These results indicate that working memory influence the performance in SRT more than CVLT. This information should be taken into account when analyzing the results of a neuropsychological evaluation in patients with Multiple Sclerosis.

Keywords : Multiple sclerosis; Long term memory; Working memory; Episodic memory; Neuropsychological tests.

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