dc.contributor.author | Petkov, G | |
dc.contributor.author | Kalitzin, S | |
dc.contributor.author | Velis, D | |
dc.contributor.author | Vledder, B | |
dc.contributor.author | Koppert, M | |
dc.contributor.author | Lopes da Silva, F | |
dc.date.accessioned | 2016-09-19T12:42:19Z | |
dc.date.issued | 2012-11-10 | |
dc.description.abstract | Rationale. The goal of this study is to evaluate the
electroencephalographic (EEG) events, prior to clonic phases of
epileptic motor seizures. Analyzing video sequences we were
able to detect these special phases of motor seizures, by image
features. This can be used for an early detection and alerting
for these events. In the study we analyzed 42 seizures. Based on
collected data we compare the quantitative results from video
detection of seizures with the features computed from EEG
scalp recordings from about 3 minutes prior to the seizure. We
analyze the non-stationary frequency spectrum of the EEG
recordings and match it against our automated video detection
output in order to investigate possible precursory EEG events.
Methods. Video recordings are analyzed by applying optical
flow theory, reconstruction of geometrical flow invariants, low
and high pass filtering, and suitable normalizations. EEG
recordings are processed with use of a Gabor wavelet
technique. Comparison is achieved by means of analysis of the
cross-correlation function between the derivatives of the Gabor
DPSOLWXGHVDQG WKH PHDVXUHRI³VHL]XUHQHVV¥SURGXFHG E\RXU
video detection algorithm. Results. In the present study certain
ranges of EEG frequencies were found, where electro-graphical
events precede clonic phases of clinical motor seizures from 2-8
up to 30-40 seconds. These results could be used for
construction of new generation of methods for automated
motor seizure detection. | en_GB |
dc.description.sponsorship | Research supported in part by grant 300040003 from ZonMw agency in
The Netherlands. | en_GB |
dc.identifier.citation | 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 28 August - 1 September 2012, San Diego, CA, USA, pp. 1028 - 1031 | en_GB |
dc.identifier.doi | 10.1109/EMBC.2012.6346109 | |
dc.identifier.uri | http://hdl.handle.net/10871/23521 | |
dc.language.iso | en | en_GB |
dc.publisher | Institute of Electrical and Electronics Engineers (IEEE) | en_GB |
dc.relation.url | http://www.ncbi.nlm.nih.gov/pubmed/23366070 | en_GB |
dc.subject | Gabor filters | en_GB |
dc.subject | electroencephalography | en_GB |
dc.subject | filtering theory | en_GB |
dc.subject | image reconstruction | en_GB |
dc.subject | image sequences | en_GB |
dc.subject | medical disorders | en_GB |
dc.subject | medical image processing | en_GB |
dc.subject | neurophysiology | en_GB |
dc.subject | video signal processing | en_GB |
dc.subject | EEG frequencies | en_GB |
dc.subject | EEG scalp recordings | en_GB |
dc.subject | Gabor amplitudes | en_GB |
dc.subject | Gabor wavelet technique | en_GB |
dc.subject | automated video detection output | en_GB |
dc.subject | clinical motor seizures | en_GB |
dc.subject | clonic phases | en_GB |
dc.subject | cross-correlation function | en_GB |
dc.subject | electroencephalographic events | en_GB |
dc.subject | electrographical events | en_GB |
dc.subject | epileptic major motor seizures | en_GB |
dc.subject | geometrical flow invariant reconstruction | en_GB |
dc.subject | high pass filtering | en_GB |
dc.subject | image features | en_GB |
dc.subject | low pass filtering | en_GB |
dc.subject | nonstationary frequency spectrum | en_GB |
dc.subject | optical flow theory | en_GB |
dc.subject | precursory EEG events | en_GB |
dc.subject | video detection algorithm | en_GB |
dc.subject | video sequences | en_GB |
dc.subject | Computer vision | en_GB |
dc.subject | Electroencephalography | en_GB |
dc.subject | Filtering | en_GB |
dc.subject | Image motion analysis | en_GB |
dc.subject | Image reconstruction | en_GB |
dc.subject | Optical filters | en_GB |
dc.subject | Optical recording | en_GB |
dc.title | Electroencephalographic events prior to epileptic major motor seizures | en_GB |
dc.type | Conference paper | en_GB |
dc.identifier.isbn | 978-1-4577-1787-1 | |
dc.identifier.issn | 1557-170X | |
refterms.dateFOA | 2023-03-10T11:48:52Z | |