Abstract

EEG and MEG were simultaneously recorded to study the visual gamma-band (30-70 Hz) responses. The electrical gamma-band response phase-locked to stimulus onset can be subdivided into a central component at 39 Hz and an occipital component at 36 Hz. A new high-frequency magnetic phase-locked response recorded over the occipital lobe is described. Its topography is complex and probably reflects the activity of multiple sources. Both electrical and magnetic high-frequency responses differ in topography from the low-frequency responses in the same latency range, suggesting that at least partially distinct sources are involved. The existence of a non-phase-locked 40 Hz component around 280 ms is confirmed in EEG data but is not detectable in MEG data.

Keywords

MagnetoencephalographyElectroencephalographyNeuroscienceStimulus (psychology)Occipital lobeElectrophysiologyAudiologyPhotic StimulationVisual cortexPsychologyPhysicsNuclear magnetic resonanceVisual perceptionMedicineCognitive psychologyPerception

MeSH Terms

AdultElectroencephalographyEvoked PotentialsVisualFemaleHumansMagnetoencephalographyMaleOptical IllusionsPhotic StimulationReaction Time

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Publication Info

Year
1997
Type
article
Volume
8
Issue
5
Pages
1103-1107
Citations
115
Access
Closed

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Cite This

Catherine Tallon‐Baudry, Olivier Bertrand, Christian Wienbruch et al. (1997). Combined EEG and MEG recordings of visual 40 Hz responses to illusory triangles in human. Neuroreport , 8 (5) , 1103-1107. https://doi.org/10.1097/00001756-199703240-00008

Identifiers

DOI
10.1097/00001756-199703240-00008
PMID
9175093

Data Quality

Data completeness: 81%