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Measurement of the Mapping between Intracranial EEG and fMRI Recordings in the Human Brain.

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  • معلومة اضافية
    • المصدر:
      Publisher: MDPI AG Country of Publication: Switzerland NLM ID: 101676056 Publication Model: Electronic Cited Medium: Print ISSN: 2306-5354 (Print) Linking ISSN: 23065354 NLM ISO Abbreviation: Bioengineering (Basel) Subsets: PubMed not MEDLINE
    • بيانات النشر:
      Original Publication: Basel, Switzerland : MDPI AG, [2014]-
    • نبذة مختصرة :
      There are considerable gaps in our understanding of the relationship between human brain activity measured at different temporal and spatial scales. Here, electrocorticography (ECoG) measures were used to predict functional MRI changes in the sensorimotor cortex in two brain states: at rest and during motor performance. The specificity of this relationship to spatial co-localisation of the two signals was also investigated. We acquired simultaneous ECoG-fMRI in the sensorimotor cortex of three patients with epilepsy. During motor activity, high gamma power was the only frequency band where the electrophysiological response was co-localised with fMRI measures across all subjects. The best model of fMRI changes across states was its principal components, a parsimonious description of the entire ECoG spectrogram. This model performed much better than any others that were based either on the classical frequency bands or on summary measures of cross-spectral changes. The region-specific fMRI signal is reflected in spatially and spectrally distributed EEG activity.
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    • Grant Information:
      United Kingdom WT_ Wellcome Trust
    • Contributed Indexing:
      Keywords: BOLD; BOLD coupling; EEG-fMRI; Intracranial EEG; fMRI biophysics; functional MRI
    • الموضوع:
      Date Created: 20240327 Latest Revision: 20240330
    • الموضوع:
      20240330
    • الرقم المعرف:
      PMC10968112
    • الرقم المعرف:
      10.3390/bioengineering11030224
    • الرقم المعرف:
      38534498