Slow Wave Activity Related to Working Memory Maintenance in the N-Back Task
| Autor: | Robert West, Gregory S.A. Mlynarczyk, Kira Bailey |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
n-back
Physiology Working memory General Neuroscience 05 social sciences Short-term memory Cognition Stimulus (physiology) Cognitive neuroscience 050105 experimental psychology 03 medical and health sciences 0302 clinical medicine Neuropsychology and Physiological Psychology Distraction P3b 0501 psychology and cognitive sciences Psychology 030217 neurology & neurosurgery Cognitive psychology |
| Zdroj: | Journal of Psychophysiology. 30:141-154 |
| ISSN: | 2151-2124 0269-8803 |
| DOI: | 10.1027/0269-8803/a000164 |
| Popis: | Abstract. Working memory supports our ability to maintain goal-relevant information that guides cognition in the face of distraction or competing tasks. The N-back task has been widely used in cognitive neuroscience to examine the functional neuroanatomy of working memory. Fewer studies have capitalized on the temporal resolution of event-related brain potentials (ERPs) to examine the time course of neural activity in the N-back task. The primary goal of the current study was to characterize slow wave activity observed in the response-to-stimulus interval in the N-back task that may be related to maintenance of information between trials in the task. In three experiments, we examined the effects of N-back load, interference, and response accuracy on the amplitude of the P3b following stimulus onset and slow wave activity elicited in the response-to-stimulus interval. Consistent with previous research, the amplitude of the P3b decreased as N-back load increased. Slow wave activity over the frontal and posterior regions of the scalp was sensitive to N-back load and was insensitive to interference or response accuracy. Together these findings lead to the suggestion that slow wave activity observed in the response-to-stimulus interval is related to the maintenance of information between trials in the 1-back task. |
| Databáze: | OpenAIRE |
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