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

The aim of the study was to identify central executive activity in the event-related potential (ERP) in the time and space domain. Lists of three to eight consonants were presented sequentially. After each list the ordered recall of the three most recent items was required. In this running memory ta...

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Bibliographic Details
Published in:International journal of psychophysiology 2000-12, Vol.39 (1), p.51-65
Main Authors: Kusak, Guido, Grune, Kerstin, Hagendorf, Herbert, Metz, Anna-Marie
Format: Article
Language:English
Subjects:
Adult
Analysis of Variance
Behavioral psychophysiology
Biological and medical sciences
Central executive
Electrodes
Electroencephalography - methods
Electrophysiology
Event-related potentials
Evoked Potentials - physiology
Female
Fundamental and applied biological sciences. Psychology
Humans
Male
Memory - physiology
Photic Stimulation - methods
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Slave systems
Slow waves
Working memory
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Summary:The aim of the study was to identify central executive activity in the event-related potential (ERP) in the time and space domain. Lists of three to eight consonants were presented sequentially. After each list the ordered recall of the three most recent items was required. In this running memory task the updating of working memory contents from the fourth letter on may be understood as a control process. ERPs elicited from each consonant presented in the lists were subtracted from those of a control condition that was also applied to the participants. The difference waveforms showed fronto-central distributed positivities, probably indicating the activity of a postulated central executive. This finding confirms those of neuroimaging studies that localize executive activity to prefrontal brain areas.
ISSN:0167-8760
1872-7697
DOI:10.1016/S0167-8760(00)00116-1