Abstract：
:Implicit contextual learning is the ability to acquire contextual information from our surroundings without conscious awareness. Such contextual information facilitates the localization of objects in space. In a typical implicit contextual learning paradigm, subjects need to find a target among a number of distractors during visual search. Some of the configurations of stimuli are repeated during the experiment resulting in faster responses than for novel configurations, without subjects being aware of their repetition. Patients with Korsakoff's syndrome (KS) have been found to show devastating explicit spatial amnesia. Less is know about their implicit spatial memory abilities. The aim of the present research was to examine whether implicit contextual learning is intact in KS. Therefore, eighteen KS patients and twenty-two age-IQ- and education-matched controls performed the Implicit Contextual Learning task and a paradigm intended to assess explicit, spatial working memory, i.e. the Box task. Intact implicit contextual learning was observed in both the control group and the KS patients. In turn KS patients did have markedly lower explicit spatial working memory scores. The implicit learning effect was not related to the spatial working memory scores. Together these results clearly suggest that implicit and explicit spatial memory have a different neurocognitive basis.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Oudman E,Van der Stigchel S,Wester AJ,Kessels RP,Postma Adoi
10.1016/j.neuropsychologia.2011.06.010subject
Has Abstractpub_date
2011-08-01 00:00:00pages
2848-55issue
10eissn
0028-3932issn
1873-3514pii
S0028-3932(11)00291-0journal_volume
49pub_type
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