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Mapping Cortical Function with Event-Related Electrocorticography

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Functional Mapping of the Cerebral Cortex

Abstract

Direct cortical stimulation is the current standard for mapping basic motor and sensory function in the surgical setting, and is commonly used to confirm noninvasive functional mapping techniques, such as functional MRI, PET, MEG and transcranial magnetic stimulation studies. This chapter reviews the recent proliferation of event-induced high-frequency (30-250 Hz) electrocorticographic gamma mapping studies. Such studies have expanded the scope of cortical mapping to expressive and receptive speech processing, memory storage and retrieval, and other sensory and motor processes. Such maps can be registered and displayed with MR images and even directly on cortex. Progress toward passively mapping various cognitive and behavioral states outside of the hospital setting using chronically indwelling subdural electrodes that communicate without cables through telemetry is reviewed. This technique still needs validation with clinically accepted functional mapping tests, and will likely soon join the physician’s armamentarium of accepted functional mapping techniques.

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Authors and Affiliations

  1. Department of Neurology, University of Chicago Medical School, Chicago, IL, USA

    Vernon L. Towle Ph.D., Zhongtian Dai, Weili Zheng & Naoum P. Issa M.D., Ph.D.

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  1. Vernon L. Towle Ph.D.
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  2. Zhongtian Dai
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Correspondence to Vernon L. Towle Ph.D. .

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  1. Department of Neurosurgery, Rush University Medical Center, Chicago, Illinois, USA

    Richard W. Byrne

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Towle, V.L., Dai, Z., Zheng, W., Issa, N.P. (2016). Mapping Cortical Function with Event-Related Electrocorticography. In: Byrne, R. (eds) Functional Mapping of the Cerebral Cortex. Springer, Cham. https://doi.org/10.1007/978-3-319-23383-3_6

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