Classification of convulsive psychogenic non-epileptic seizures using muscle transforms obtained from accelerometry signal

Shitanshu Kusmakar, Jayavardhana Gubbi, Bernard Yan, Terence J. O'Brien, Marimuthu Palaniswami

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

1 Citation (Scopus)

Abstract

Convulsive psychogenic non-epileptic seizure (PNES) can be characterized as events which mimics epileptic seizures but do not show any characteristic changes on electroencephalogram (EEG). Correct diagnosis requires video-electroencephalography monitoring (VEM) as the diagnosis of PNES is extremely difficult in primary health care. Recent work has demonstrated the usefulness of accelerometry signal taken during a seizure in classification of PNES. In this work, a new direction has been explored to understand the role of different muscles in PNES. This is achieved by modeling the muscle activity of ten different upper limb muscles as a resultant function of accelerometer signal. Using these models, the accelerometer signals recorded from convulsive epileptic patients were transformed into individual muscle components. Based on this, an automated algorithm for classification of convulsive PNES is proposed. The algorithm calculates four wavelet domain features based on signal power, approximate entropy, kurtosis and signal skewness. These features were then used to build a classification model using support vector machines (SVM) classifier. It was found that the transforms corresponding to anterior deltoid and brachioradialis results in good PNES classification accuracy. The algorithm showed a high sensitivity of 93.33% and an overall PNES classification accuracy of 89% with the transform corresponding to anterior deltoid.

Original languageEnglish
Title of host publication2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2015)
EditorsJim Patton
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages582-585
Number of pages4
ISBN (Electronic)9781424492718
ISBN (Print)9781424492695
DOIs
Publication statusPublished - 4 Nov 2015
Externally publishedYes
EventInternational Conference of the IEEE Engineering in Medicine and Biology Society 2015 - Milan, Italy
Duration: 25 Aug 201529 Aug 2015
Conference number: 37th
https://embc.embs.org/2015/
https://ieeexplore.ieee.org/xpl/conhome/7302811/proceeding (Proceedings)

Conference

ConferenceInternational Conference of the IEEE Engineering in Medicine and Biology Society 2015
Abbreviated titleEMBC 2015
CountryItaly
CityMilan
Period25/08/1529/08/15
Other37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS). Our Annual Conference (known as EMBC) is a premier international conference in biomedical engineering, and has been strategically held in different locations around the world, including Chicago, Osaka, San Diego, Boston, Buenos Aires, Minneapolis, Vancouver, Lyon, New York, and Shanghai over the last 10 years.
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