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Steady-State Cortico-Cortical Evoked Potential

Journal of Clinical Neurophysiology, ISSN: 1537-1603, Vol: 40, Issue: 4, Page: 301-309
2023
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Article Description

Purpose:The present study evaluated the utility of the steady-state responses of cortico-cortical evoked potentials (SSCCEPs) and compared them with the responses of conventional CCEPs.Methods:Eleven patients with medically intractable focal epilepsy who underwent the implantation of subdural electrodes or stereoelectroencephalography were enrolled. Conventional CCEPs were obtained by averaging responses to alternating 1-Hz electrical stimuli, and 5-Hz stimuli were delivered for recording SSCCEPs. The distribution of SSCCEPs was assessed by a frequency analysis of fast Fourier transform and compared with conventional CCEPs.Results:Steady-state responses of cortico-cortical evoked potentials were successfully recorded in areas consistent with conventional CCEPs in all patients. However, SSCCEPs were more easily disturbed by the 5-Hz stimulation, and small responses had difficulty generating SSCCEPs.Conclusions:Steady-state responses of cortico-cortical evoked potentials may be a useful alternative to conventional CCEPs.

Bibliographic Details

Arihara, Masayasu; Enatsu, Rei; Ochi, Satoko; Sasagawa, Ayaka; Hirano, Tsukasa; Kuribara, Tomoyoshi; Yamada, Shoto; Kimura, Yusuke; Matsuhashi, Masao; Mikuni, Nobuhiro

Ovid Technologies (Wolters Kluwer Health)

Biochemistry, Genetics and Molecular Biology; Neuroscience; Medicine

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