Source Estimation of the K-Complex MEG and Auditory Evoked Fields.
نویسندگان
چکیده
منابع مشابه
Comparison of source localization for the P30m, P50m, and N100m peaks of the auditory evoked fields
N100m is the most prominent peak of the auditory evoked magnetic field (AEF) for tone burst stimulus and has been termed the long latency component. The source of the N100m is considered to be located in the primary auditory cortices along the bilateral superior temporal planes [1]. However, recent studies have suggested a possible contribution of the higher functional areas to N100m generation...
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OBJECTIVE To compare the localizations of different neural sources (a) obtained from intracerebral evoked responses and (b) calculated from surface auditory evoked field responses recorded in the same subjects. Our aim was to evaluate the resolving power of a source localization method currently used in our laboratory, which is based on a recent spatio-temporal algorithm used in magneto-encepha...
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We address some key issues entailed by population inference about responses evoked in distributed brain systems using magnetoencephalography (MEG). In particular, we look at model selection issues at the within-subject level and feature selection issues at the between-subject level, using responses evoked by intact and scrambled faces around 170 ms (M170). We compared the face validity of subje...
متن کاملSource localization with MEG evoked by the olfactory oddball paradigm
1 Introduction Cortical areas activated by olfactory stimulation have not been made clear yet, though a few studies were reported [1-3]. We are trying to localize the sources of olfactory MEG. The olfactory response becomes quickly weak because of subject's habituation. Then the data for source localization have little number of averaging and include much noise. The estimation error of localiza...
متن کاملAuditory evoked magnetic fields of subcortical origin
Magnetoencephalography (MEG) is generally dealing with cortical sources, since the sensitivity of MEG declines rapidly with increasing source depth. Two factors are responsible for this loss of sensitivity. First, the amplitude of the measured MEG is inversely proportional to the squared distance between sensors and source, and this distance naturally increases with source depth. Second, the ME...
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ژورنال
عنوان ژورنال: Journal of the Magnetics Society of Japan
سال: 1993
ISSN: 0285-0192
DOI: 10.3379/jmsjmag.17.579