Nemeth, Dezso, Janacsek, Karolina ORCID: https://orcid.org/0000-0001-7829-8220, Király, Katalin, Londe, Zsuzsa, Nemeth, Kornel, Fazekas, Kata, Adam, Ilona, Elemerne, Kiraly and Csanyi, Attila (2013) Probabilistic sequence learning in mild cognitive impairment. Frontiers in human neuroscience, 7:318. ISSN 1662-5161 (Online) (doi:10.3389/fnhum.2013.00318)

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Abstract

Mild Cognitive Impairment (MCI) causes slight but noticeable disruption in cognitive systems, primarily executive and memory functions. However, it is not clear if the development of sequence learning is affected by an impaired cognitive system and, if so, how. The goal of our study was to investigate the development of probabilistic sequence learning, from the initial acquisition to consolidation, in MCI and healthy elderly control groups. We used the Alternating Serial Reaction Time task (ASRT) to measure probabilistic sequence learning. Individuals with MCI showed weaker learning performance than the healthy elderly group. However, using the reaction times only from the second half of each learning block – after the reactivation phase - we found intact learning in MCI. Based on the assumption that the first part of each learning block is related to reactivation/recall processes, we suggest that these processes are affected in MCI. The 24-hour offline period showed no effect on sequence-specific learning in either group but did on general skill learning: the healthy elderly group showed offline improvement in general reaction times while individuals with MCI did not. Our findings deepen our understanding regarding the underlying mechanisms and time course of sequence acquisition and consolidation.

Item Type:	Article
Uncontrolled Keywords:	mild cognitive impairment, offline learning, statistical learning, implicit learning, skill learning, consolidation, automaticity
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Faculty / School / Research Centre / Research Group:	Faculty of Education, Health & Human Sciences Faculty of Education, Health & Human Sciences > School of Human Sciences (HUM)
Last Modified:	24 Feb 2021 11:12
URI:	http://gala.gre.ac.uk/id/eprint/25697

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