Clinical Electroencephalography and Event-Related Potentials

Lewine, Jeffrey D.; Orrison, William W.

doi:10.1016/b978-0-8151-6509-5.50012-6

Cited by 19 publications

(14 citation statements)

References 25 publications

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“…Furthermore, their inferences regarding neuronal activity are necessarily complicated by the variability of coupling between neuronal activity, cerebral hemodynamics, and metabolism [Fox and Raichle, 1986]. Compared to EEG and MEG [Cohen, 1968;Lewine and Orrison, 1995], msMRI offers higher spatial accuracy. Relying on in-formation detected at the scalp to localize active sites inside the brain, both EEG and MEG require solving an inverse problem, which leads to spatial uncertainty in the localization of electromagnetic sources.…”

Section: Discussionmentioning

confidence: 99%

Directly mapping magnetic field effects of neuronal activity by magnetic resonance imaging

Xiong

Fox²,

Gao

2003

Human Brain Mapping

125

109

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Magnetic resonance imaging (MRI) of brain functional activity relies principally on changes in cerebral hemodynamics, which are more spatially and temporally distributed than the underlying neuronal activity changes. We present a novel MRI technique for mapping brain functional activity by directly detecting magnetic fields induced by neuronal firing. Using a well-established visuomotor paradigm, the locations and latencies of activations in visual, motor, and premotor cortices were imaged at a temporal resolution of 100 msec and a spatial resolution of 3 mm, and were found to be in consistent with the electrophysiological and functional MRI (fMRI) literature. Signal strength was comparable to traditional event-related fMRI methods: about 1% of the baseline signal. The magnetic-source MRI technique greatly increases the temporal accuracy in detecting neuronal activity, providing a powerful new tool for mapping brain functional organization in human and animals.

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Section: Discussionmentioning

confidence: 99%

Directly mapping magnetic field effects of neuronal activity by magnetic resonance imaging

Xiong

Fox²,

Gao

2003

Human Brain Mapping

125

109

View full text Add to dashboard Cite

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“…Recently, human brain mapping technology has been advanced based on integrated analysis of anatomical and functional measurement (4,5). Magnetoencephalography and electroencephalography provide excellent temporal resolution of neuronal population dynamics as well as capabilities for source localization (6,7). The recent development of functional magnetic resonance imaging (fMRI) techniques provides a unique method to map human brain function based on changes of blood flow and/or blood oxygenation level dependent (BOLD) contrast.…”

Section: Introductionmentioning

confidence: 99%

Current-Induced Magnetic Resonance Phase Imaging

Bodurka

Jeśmanowicz

Hyde

et al. 1999

Journal of Magnetic Resonance

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“…On one hand, techniques such as electroencephalography (EEG) and magnetoencephalography (MEG) record the integrated and synchronized electromagnetic activity of populations of pyramidal neurons in the cerebral cortex [7], [8]. Both EEG and MEG have excellent temporal resolution (at the millisecond level), but they also share the weakness of a poor three-dimensional spatial localization: the activated cortical sources need to be estimated based on the distribution of the electromagnetic fields on the scalp ("inverse problem"), which is a mathematically ill-posed problem.…”

Section: Introductionmentioning

confidence: 99%

Functional Near-Infrared Spectroscopy and Electroencephalography: A Multimodal Imaging Approach

Merzagora

İzzetoğlu

Polikar

et al. 2009

Foundations of Augmented Cognition. Neuroergonomics and Operational Neuroscience

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Abstract. Although neuroimaging has greatly expanded our knowledge about the brain-behavior relation, combining multiple neuroimaging modalities with complementing strengths can overcome some limitations encountered when using a single modality. Valuable candidates for a multimodal approach are functional near-infrared spectroscopy (fNIRS) and electroencephalography (EEG). fNIRS is an imaging technology that localizes hemodynamic changes within the cortex. However, hemodynamic activation is an intrinsically slow process. On the other hand, EEG has excellent time resolution by directly measuring the manifestation of the brain electrical activity at the scalp. Based on their complementary strengths, the integration of fNIRS and EEG may provide higher spatiotemporal resolution than either method alone. In this effort, we integrate fNIRS and EEG to evaluate the behavioral performance of six healthy adults in a working memory task. To this end, features extracted from fNIRS and EEG were used separately, as well as in combination, and their performances were compared against each other.

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Clinical Electroencephalography and Event-Related Potentials

Cited by 19 publications

References 25 publications

Directly mapping magnetic field effects of neuronal activity by magnetic resonance imaging

Directly mapping magnetic field effects of neuronal activity by magnetic resonance imaging

Current-Induced Magnetic Resonance Phase Imaging

Functional Near-Infrared Spectroscopy and Electroencephalography: A Multimodal Imaging Approach

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