Time-frequency mapping of the rhythmic limb movements distinguishes convulsive epileptic from psychogenic nonepileptic seizures

J Bayly; J Carino; M Smit; DA Fernando; A Vinton; B Yan; TJ O'Brien; S Petrovski; JR Gubbi; MS Palaniswami

Journal article

Time-frequency mapping of the rhythmic limb movements distinguishes convulsive epileptic from psychogenic nonepileptic seizures

J Bayly, J Carino, M Smit, DA Fernando, A Vinton, B Yan, TJ O'Brien, S Petrovski, JR Gubbi, MS Palaniswami

Epilepsia | Published : 2013

DOI: 10.1111/epi.12207

Abstract

Purpose: A definite diagnosis of psychogenic nonepileptic seizures (PNES) usually requires in-patient video-electroencephalography (EEG) monitoring. Previous research has shown that convulsive psychogenic nonepileptic seizures (PNES) demonstrate a characteristic pattern of rhythmic movement artifact on the EEG. Herein we sought to examine the potential for time-frequency mapping of data from a movement-recording device (accelerometer) worn on the wrist as a diagnostic tool to differentiate between convulsive epileptic seizures and PNES. Methods: Time-frequency mapping was performed on accelerometer traces obtained during 56 convulsive seizure-like events from 35 patients recorded during in-p..

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University of Melbourne Researchers

Bernard Yan Author

Slave Petrovski Author

Marimuthu Palaniswami Author

Nigel Jones Author

Grants

Funding Acknowledgements

The authors acknowledge the assistance of Mr. Rob Griffiths, from Griffin Global Pty Ltd., Melbourne, Australia, and Professor Malcolm Horne, The Florey Neurosciences Institutes, Melbourne, Australia, for their assistance with the supply and maintenance of the accelerometer devices used in this study. The study was supported by the Royal Melbourne Hospital Research Foundation.