Updating of working memory in a running memory task: an event-related potential study

Kusak, Guido; Grune, Kerstin; Hagendorf, Herbert; Metz, Anna-Marie

doi:10.1016/s0167-8760(00)00116-1

Cited by 60 publications

(38 citation statements)

References 33 publications

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“…5(a), a positive-going ERP component associated with the working memory process starts at about 200 ms and ends about 600 ms. This finding is consistent with the results obtained from other working memory studies [19][20][21][22][23] . These studies reported that ERPs of working memory is positive-going.…”

Section: Object Working Memory In Childrensupporting

confidence: 93%

“…Also using an n-back task, Gevins et al [21] demonstrated that a positive slow wave was present over the parietal region at the right hemisphere. Applying various experimental paradigms, prior research [20,[22][23] indicated that ERPs of working memory is related to positive waves mostly visible around the frontal and parietal-central region. The findings in our children's study are in agreement with this view particularly in parietal-central sites.…”

Section: Object Working Memory In Childrenmentioning

confidence: 99%

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An event-related potential study of working memory in children

2006

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Section: Object Working Memory In Childrensupporting

confidence: 93%

Section: Object Working Memory In Childrenmentioning

confidence: 99%

An event-related potential study of working memory in children

2006

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“…We predict a genotype by ISI interaction effect; specifically individuals with the Met allele should show greater behavioral advantages, and more robust differences in brain activation response, as ISI increases. Several other paradigms may be even better suited to differentiate maintenance from updating functions in working memory, and these might offer promising candidates for defining COMT-relevant phenotypes (Halgren et al, 2002;Kusak et al, 2000;Radvansky, 2001). Similarly, tasks examining the ability to maintain a consistent behavioral program in the face of distraction could help dissect the contributions of reciprocal controls over cognitive stability and plasticity (Fan et al, 2002).…”

Section: Human Behavioral and Functional Imaging Studiesmentioning

confidence: 99%

The Catechol-O-Methyltransferase Polymorphism: Relations to the Tonic–Phasic Dopamine Hypothesis and Neuropsychiatric Phenotypes

Bilder

Volavka

Lachman

et al. 2004

Neuropsychopharmacol

717

654

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Diverse phenotypic associations with the catechol-O-methyltransferase (COMT) Val158 Met polymorphism have been reported. We suggest that some of the complex effects of this polymorphism be understood from the perspective of the tonic-phasic dopamine (DA) hypothesis. We hypothesize that the COMT Met allele (associated with low enzyme activity) results in increased levels of tonic DA and reciprocal reductions in phasic DA in subcortical regions and increased D1 transmission cortically. This pattern of effects is hypothesized to yield increased stability but decreased flexibility of neural network activation states that underlie important aspects of working memory and executive functions; these effects may be beneficial or detrimental depending on the phenotype, a range of endogenous factors, and environmental exigencies. The literature on phenotypic associations of the COMT Val 158 Met polymorphism is reviewed, highlighting areas where this hypothesis may have explanatory value, and pointing to possible directions for refinement of relevant phenotypes and experimental evaluation of this hypothesis.

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“…Smith [30] found that LPC might be related to word reconstruction and retrieving which was based on long memory system. Kusak et al [31] also found that the LPC amplitude increased as task difficulty increased, and suggested that the larger the processing demands to keep object information in working memory, the larger the LPC activity. In addition, parahippocampal activation has been reported in many studies on memory [32,33] .…”

Section: Discussionmentioning

confidence: 96%

“Aha!” effects in a guessing Chinese logogriph task: An event-related potential study

Qiu

2008

Chin. Sci. Bull.

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In the present study, high-density event-related potentials (ERPs) were recorded to examine the electrophysiologic correlates of "Aha!" effects in a guessing Chinese logogriph task by using a two-stage model for learning-testing. Results showed that: Firstly Successful Guessing elicited a more negative ERP deflection (N350) than Recognition did in the time window from 300-350 ms after onset of the stimuli. A voltage map of the difference wave (Successful Guessing minus Recognition) showed strong activity at the front-central region. Dipole analysis localized the generator of the N350 in the vicinity of the posterior cingulate cortex (PCC) and the inferior frontal gyrus. Secondly, a greater late positive component (LPC) in Successful Guessing than Recognition was found between 600 and 700 ms post-stimulus. Dipole analysis localized the generator of LPC in the right parahippocampal gyrus.insight, Chinese logogriph, problem solving, event-related potentials (ERPs)

show abstract

Updating of working memory in a running memory task: an event-related potential study

Cited by 60 publications

References 33 publications

An event-related potential study of working memory in children

An event-related potential study of working memory in children

The Catechol-O-Methyltransferase Polymorphism: Relations to the Tonic–Phasic Dopamine Hypothesis and Neuropsychiatric Phenotypes

“Aha!” effects in a guessing Chinese logogriph task: An event-related potential study

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