Event-related desynchronization related to the anticipation of a stimulus providing knowledge of results

Bastiaansen, Marcel C. M.; Böcker, K.B.E.; Cluitmans, P.J.M.; Brunia, C.H.M.

doi:10.1016/s0013-4694(98)00122-9

Cited by 45 publications

(34 citation statements)

References 42 publications

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“…This observation might explain why we didn't find an ERD over the temporal cortex preceding auditory KR stimuli in our previous Ž . EEG study Bastiaansen et al, 1999b : if we cannot pick up rhythmic activity from the auditory cortex with scalp EEG, then we surely cannot demonstrate a desynchronization of this rhythmic activity. Experiment 2 was aimed at verifying this possibility.…”

Section: Interim Discussionmentioning

confidence: 99%

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Anticipatory attention: an event-related desynchronization approach

Bastiaansen

Brunia

2001

International Journal of Psychophysiology

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103

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This paper addresses the question of whether anticipatory attention ᎏ i.e. attention directed towards an upcoming stimulus in order to facilitate its processing ᎏ is realized at the neurophysiological level by a pre-stimulus desynchronization of the sensory cortex corresponding to the modality of the anticipated stimulus, reflecting the opening of a thalamocortical gate in the relevant sensory modality. It is argued that a technique called Event-Related Ž . Desynchronization ERD of rhythmic 10-Hz activity is well suited to study the thalamocortical processes that are thought to mediate anticipatory attention. In a series of experiments, ERD was computed on EEG and MEG data, recorded while subjects performed a time estimation task and were informed about the quality of their time Ž . Ž estimation by stimuli providing Knowledge of Results KR . The modality of the KR stimuli auditory, visual, or . somatosensory was manipulated both within and between experiments. The results indicate to varying degrees that preceding the presentation of the KR stimuli, ERD is present over the sensory cortex, which corresponds to the modality of the KR stimulus. The general pattern of results supports the notion that a thalamocortical gating mechanism forms the neurophysiological basis of anticipatory attention. Furthermore, the results support the notion Ž . that Event-Related Potential ERP and ERD measures reflect fundamentally different neurophysiological processes. ᮊ

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Section: Interim Discussionmentioning

confidence: 99%

“…In essence, the ERD results on the present EEG data are a confirmation of the results of our Ž . previous study Bastiaansen et al, 1999b . For the MEG data the picture was more complex. Therefore, we will discuss the results sepa-Ž rately for each subject see Fig.…”

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confidence: 91%

Anticipatory attention: an event-related desynchronization approach

Bastiaansen

Brunia

2001

International Journal of Psychophysiology

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103

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“…oscillatory activity in ␣ and ␤ bands has been reported with selfpaced movements (Stancak and Pfurtscheller, 1995) and in stimulus anticipation (Bastiaansen et al, 1999;Worden et al, 2000). ␤ Power is also sensitive to the timing of response selection after a task-relevant stimulus (Kaiser et al, 2001).…”

Section: Modulation Of Oscillatory Activity and Implicit Timingmentioning

confidence: 99%

Neurophysiology of Implicit Timing in Serial Choice Reaction-Time Performance

Praamstra

Kourtis²,

Kwok³

et al. 2006

J. Neurosci.

199

204

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Neural representations of time for the judgment of temporal durations are reflected in electroencephalographic (EEG) slow brain potentials, as established in time production and perception tasks. Here, we investigated whether anticipatory processes in reaction-time procedures are governed by similar mechanisms of interval timing. We used a choice reaction task with two different, temporally regular stimulus presentation regimes, both with occasional deviant interstimulus intervals. Temporal preparation was shown in the form of adjustments in time course of slow brain potentials, such that they reached their maximum amplitude just before a new trial, independent of the duration of the interstimulus interval. Preparation was focused on a brief time window, demonstrated by a drop in amplitude of slow potentials as the standard interval had elapsed in deviant interstimulus intervals. Implicit timing influencing perceptual processing was shown in reduced visual-evoked responses to delayed stimuli after a deviant interstimulus interval and in a reduction of EEG ␣ power over the visual cortex at the time when the standard interval had elapsed. In contrast to explicit timing tasks, the slow brain potential manifestations of implicit timing originated in the lateral instead of the medial premotor cortex. Together, the results show that temporal regularities set up a narrow time window of motor and sensory attention, demonstrating the operation of interval timing in reaction time performance. The divergence in slow brain potential distribution between implicit and explicit timing tasks suggests that interval timing for different behaviors relies on qualitatively similar mechanisms implemented in distinct cortical substrates.

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“…The symmetric property of the zero-phase filter means that processed signals have precisely zero phase distortion and therefore no time shift of peak beta rebound was introduced. Hence, fluctuations of significance level and the jittering of central processing despite similar behavioral performance may be ascribed to the subject's variant cognitive states or the degree of training (Buser & Rougeul-Buser, 1999;Sterman, 1999;Flotzinger et al, 1992;Wolpaw et al, 1994;Bastiaansen et al, 2001;Bastiaansen et al, 1999;Earle, 1988;Haig et al, 1995;Hoffman et al, 1991;Yabe et al, 1993). The exploration of underlying mechanisms mandates more meticulous designs in the future.…”

Section: Discussionmentioning

confidence: 99%