Journal article
Functional connections between auditory cortical fields in humans revealed by Granger causality analysis of intra-cranial evoked potentials to sounds: Comparison of two methods
BioSystems, Vol.89(1), pp.198-207
2007
DOI: 10.1016/j.biosystems.2006.05.018
PMID: 17184906
Abstract
Knowledge of neural interactions amongst cortical sites is important for understanding higher brain function. We studied such interactions using Granger causality (GC) to analyze auditory event-related potentials (ERPs) recorded directly and simultaneously from two physiologically identified and functionally interconnected auditory areas of cerebral cortex in human neurosurgical patients. Two methods of GC analysis were used and the results compared. Both approaches involved adaptive autoregressive modeling but differed from each other in other ways. Results obtained by using the two methods also differed. Fewer false-positive results were obtained using the method that suppressed the ERP non-stationarity and that expressed the GC as the sum of model coefficients, which suggests that this is the more appropriate approach for analyzing ERPs recorded directly from the human cortex.
Details
- Title: Subtitle
- Functional connections between auditory cortical fields in humans revealed by Granger causality analysis of intra-cranial evoked potentials to sounds: Comparison of two methods
- Creators
- Hiroyuki Oya - Department of Neurosurgery, University of Iowa College of Medicine, Iowa City, IA 52242, USAPaul W.F Poon - Department of Neurosurgery, University of Iowa College of Medicine, Iowa City, IA 52242, USAJohn F Brugge - Department of Neurosurgery, University of Iowa College of Medicine, Iowa City, IA 52242, USARichard A Reale - Department of Neurosurgery, University of Iowa College of Medicine, Iowa City, IA 52242, USAHiroto Kawasaki - Department of Neurosurgery, University of Iowa College of Medicine, Iowa City, IA 52242, USAIgor O Volkov - Department of Neurosurgery, University of Iowa College of Medicine, Iowa City, IA 52242, USAMatthew A Howard - Department of Neurosurgery, University of Iowa College of Medicine, Iowa City, IA 52242, USA
- Resource Type
- Journal article
- Publication Details
- BioSystems, Vol.89(1), pp.198-207
- Publisher
- Elsevier Ireland Ltd
- DOI
- 10.1016/j.biosystems.2006.05.018
- PMID
- 17184906
- ISSN
- 0303-2647
- eISSN
- 1872-8324
- Language
- English
- Date published
- 2007
- Academic Unit
- Neurology; Iowa Neuroscience Institute; Neurosurgery; Otolaryngology
- Record Identifier
- 9984013115902771
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