Slow brain potentials preceding task performance

Gaillard, A.W.K.

doi:10.1016/0301-0511(85)90170-x

Cited by 34 publications

(12 citation statements)

References 11 publications

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“…We use this term as a heuristic device to refer to that complex of structures whose activities are more or less directly related to the mechanical event that is defined as the overt response. A similar conception can be found in Gaillard (1978) and Naatanen and Merisalo(1977).…”

Section: The Concept Of Response Channelssupporting

confidence: 79%

Pre- and poststimulus activation of response channels: A psychophysiological analysis.

Gratton¹,

Coles²,

Sirevaag³

et al. 1988

Journal of Experimental Psychology: Human Perception and Perfor

697

803

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Section: The Concept Of Response Channelssupporting

confidence: 79%

Pre- and poststimulus activation of response channels: A psychophysiological analysis.

Gratton¹,

Coles²,

Sirevaag³

et al. 1988

Journal of Experimental Psychology: Human Perception and Perfor

697

803

View full text Add to dashboard Cite

show abstract

“…At the physiological level, the EEG shows a temporary blocking of rhythmic a-activity which is replaced by fast desynchronized activity: there is a slow negative drift in the EEG, the contingent negative variation (CNV). This latter potential may reflect the moment the subject starts his preparation process (Gaillard, 1978). A combination of CNV research and the precueing technique could provide interesting data on the physiological concomitants of response organization.…”

Section: Factors Affecting Response Organization and Execution Processesmentioning

confidence: 99%

The Information Processing Paradigm: Concepts, Methods and Limitations

Mulder

1983

Child Psychology Psychiatry

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Some characteristics of the information processing paradigm are discussed. Characteristics of fast process research are particularly emphasized. Fast process research deals with elementary information processes, called 'mechanics'. The processes cannot be revealed by introspective methods, but only by chronometric studies. Attentional research has revealed automatic and controlled mechanics. Only the latter require attention resources for their execution. The functional state of the brain is thought to affect in particular the efficiency of controlled mechanics Methods used in fast process research and cognitive psychophysiology could be helpful in deciding if behavioural disturbances result from limitations in the nature of the mechanics or in their efficiency.

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“…The CNV is comprised of an early and a late component that become clearly visible if the foreperiod is longer than 2 seconds 2 . These components have a different brain topography and seem to be related to different behavioral processes 2‐6 such as orienting and motor preparation. The CNV is thought to be controlled by noradrenergic and dopaminergic systems within the central nervous system, 7‐12 where noradrenergic pathways may have a dominant role in the early wave, and dopaminergic structures mainly contribute to the late wave 8…”

mentioning

confidence: 99%

Interictal and Postictal Contingent Negative Variation in Migraine Without Aura

et al. 2001

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Cortical hyperexcitability is thought to explain the more enhanced contingent negative variation (CNV) amplitudes and impaired CNV habituation that have been found during the interictal period in migraine without aura. These CNV characteristics have been shown to normalize to the level of healthy controls during an attack. This study aimed to replicate the interictal findings, and additionally examine whether migraineurs show reduced CNV amplitudes during the postattack period. Of 12 patients with migraine without aura and their sex-and agematched healthy controls, CNV characteristics were recorded once in an interictal period, once during the postattack period within 30 hours after an attack that was treated with sumatriptan, and once after an attack that was treated with habitual nonvasoactive medication (counterbalanced). The present results did not confirm the enhanced CNV early and late wave amplitudes or impaired habituation, and cortical hyperexcitability that have previously been reported in the interictal period in patients with migraine without aura. During the postattack period, a decrease in CNV early and late amplitudes was found but only after sumatriptan use. This reduction in CNV amplitudes was most prominent over the frontal cortex and could reflect cortical hypoexcitability, possibly related to a suppression of central catecholaminergic activity by sumatriptan.Key words: migraine, contingent negative variation, sumatriptan Abbreviations: CNV contingent negative variation, WS warning stimulus, RS response signal ( Headache 2001;41:72-78) Individuals with migraine have been hypothesized to be characterized by cortical hyperexcitability reflected in enhanced contingent negative variation (CNV) amplitude. The CNV is an event-related slow brain potential that is characterized by an augmenting negativity recorded on the surface of the scalp during the foreperiod that separates a warning stimulus and a response stimulus. 1 The CNV is comprised of an early and a late component that become clearly visible if the foreperiod is longer than 2 seconds. 2 These components have a different brain topography and seem to be related to different behavioral processes 2-6 such as orienting and motor preparation. The CNV is thought to be controlled by noradrenergic and dopaminergic systems within the central nervous system, 7-12 where noradrenergic pathways may have a dominant role in the early wave, and dopaminergic structures mainly contribute to the late wave. 8 Various studies have demonstrated a more negative CNV in patients with migraine during foreperiods that are shorter than 2 seconds. 10,13,14 Studies employing longer foreperiods predominantly report a higher early wave amplitude in migraine without aura, 13,15-17 but higher late wave amplitudes have been reported as well. 13 These higher CNV amplitudes are believed to emerge as a result of the slow habituation over trials. 10,11,15,17 Research in cortical electrophysiology such as that embracing the thalamic gating model 18 or the threshold regulation ...

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Slow brain potentials preceding task performance

Cited by 34 publications

References 11 publications

Pre- and poststimulus activation of response channels: A psychophysiological analysis.

Pre- and poststimulus activation of response channels: A psychophysiological analysis.

The Information Processing Paradigm: Concepts, Methods and Limitations

Interictal and Postictal Contingent Negative Variation in Migraine Without Aura

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