Abstract：
:Our recent work has revealed that visuospatial working memory (VSWM) relates to the rate of explicit motor sequence learning (Bo and Seidler in J Neurophysiol 101:3116-3125, 2009) and implicit sequence performance (Bo et al. in Exp Brain Res 214:73-81, 2011a) in young adults (YA). Although aging has a detrimental impact on many cognitive functions, including working memory, older adults (OA) still rely on their declining working memory resources in an effort to optimize explicit motor sequence learning. Here, we evaluated whether age-related differences in VSWM and/or verbal working memory (VWM) performance relates to implicit performance change in the serial reaction time (SRT) sequence task in OA. Participants performed two computerized working memory tasks adapted from change detection working memory assessments (Luck and Vogel in Nature 390:279-281, 1997), an implicit SRT task and several neuropsychological tests. We found that, although OA exhibited an overall reduction in both VSWM and VWM, both OA and YA showed similar performance in the implicit SRT task. Interestingly, while VSWM and VWM were significantly correlated with each other in YA, there was no correlation between these two working memory scores in OA. In YA, the rate of SRT performance change (exponential fit to the performance curve) was significantly correlated with both VSWM and VWM, while in contrast, OA's performance was only correlated with VWM, and not VSWM. These results demonstrate differential reliance on VSWM and VWM for SRT performance between YA and OA. OA may utilize VWM to maintain optimized performance of second-order conditional sequences.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Bo J,Jennett S,Seidler RDdoi
10.1007/s00221-012-3189-2subject
Has Abstractpub_date
2012-09-01 00:00:00pages
467-77issue
4eissn
0014-4819issn
1432-1106journal_volume
221pub_type
杂志文章abstract：:The retinal positions of objects in the world change with each eye movement, but we seem to have little trouble keeping track of spatial information from one fixation to the next. We examined the role of attention in trans-saccadic localization by asking participants to localize targets while performing an attentional...
journal_title：Experimental brain research
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journal_title：Experimental brain research
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journal_title：Experimental brain research
pub_type： 杂志文章
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更新日期：1996-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章,随机对照试验
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更新日期：2012-10-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
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更新日期：2011-12-01 00:00:00
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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pub_type： 临床试验,杂志文章
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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更新日期：2007-08-01 00:00:00
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更新日期：2000-08-01 00:00:00
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更新日期：2007-05-01 00:00:00
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