Gating of Human Theta Oscillations by a Working Memory Task
نویسندگان
چکیده
منابع مشابه
Gating of human theta oscillations by a working memory task.
Electrode grids on the cortical surface of epileptic patients provide a unique opportunity to observe brain activity with high temporal-spatial resolution and high signal-to-noise ratio during a cognitive task. Previous work showed that large-amplitude theta frequency oscillations occurred intermittently during a maze navigation task, but it was unclear whether theta related to the spatial or w...
متن کاملTheta oscillations in human cortex during a working-memory task: evidence for local generators.
Cortical theta appears important in sensory processing and memory. Intracanial electrode recordings provide a high spatial resolution method for studying such oscillations during cognitive tasks. Recent work revealed sites at which oscillations in the theta range (4-12 Hz) could be gated by a working-memory task: theta power was increased at task onset and continued until task offset. Using a l...
متن کاملTheta oscillations index human hippocampal activation during a working memory task.
Working memory (WM) is the ability to retain and associate information over brief time intervals. Functional imaging studies demonstrate that WM is mediated by a distributed network including frontal and posterior cortices, hippocampus, and cerebellum. In rodents, the presentation of stimuli in a WM task is followed by a reset of the phase of hippocampal theta. In this paper we report the obser...
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Both amplitude and phase of rhythmic slow-wave electroencephalographic activity are physiological correlates of learning and memory in rodents. In humans, oscillatory amplitude has been shown to correlate with memory; however, the role of oscillatory phase in human memory is unknown. We recorded intracranial electroencephalogram from human cortical and hippocampal areas while subjects performed...
متن کاملConcurrent working memory task decreases the Stroop interference effect as indexed by the decreased theta oscillations.
Working memory (WM) tasks may increase or decrease the interference effect of concurrently performed cognitive control tasks. However, the neural oscillatory correlates of this modulation effect of WM on the Stroop task are still largely unknown. In the present study, behavioral and electroencephalographic (EEG) data were recorded from 32 healthy participants during their performance of the sin...
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ژورنال
عنوان ژورنال: The Journal of Neuroscience
سال: 2001
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.21-09-03175.2001