Interpretation of SEEG recordings

The interpretation of SEEG recordings is a crucial step. It must be carried out by an epileptologist/neurophysiologist with sufficient training and qualification in this field. The objectives of the interpretation are to define the brain topography of interictal activities (irritative zone) and the...

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Bibliographic Details
Published in:Neurophysiologie clinique 2018-02, Vol.48 (1), p.53-57
Main Authors: Bartolomei, Fabrice, Nica, Anca, Valenti-Hirsch, Maria Paola, Adam, Claude, Denuelle, Marie
Format: Article
Language:English
Subjects:
Age of Onset
Bioengineering
Brain - physiopathology
Brain architecture
Brain Mapping - methods
Brain Waves - physiology
Cortical stimulations
Electrical stimuli
Electrodes
Electroencephalography - methods
Epilepsy
Epileptogenic zone
Epileptogenicity
Humans
Life Sciences
Oscillations
Quantitative analysis
Seizures - physiopathology
Topography
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Summary:The interpretation of SEEG recordings is a crucial step. It must be carried out by an epileptologist/neurophysiologist with sufficient training and qualification in this field. The objectives of the interpretation are to define the brain topography of interictal activities (irritative zone) and the epileptogenic zone, defined as the site of primary organization of ictal discharges. Several patterns of seizure onset are possible, the most typical including fast discharges. The interpretation of the SEEG is based on the recording of spontaneous activity but also on the results of intracerebral electrical stimulation. It must be done with accurate anatomical information on the location of the electrodes in terms of the patient's anatomy. Quantification of interictal activities (spikes, high frequency oscillations) and ictal activity (epileptogenicity index) is recommended. The interpretation of the SEEG must also take into account functional data and will be the basis for the final decision on the operability and type of intervention chosen.
ISSN:0987-7053
1769-7131
DOI:10.1016/j.neucli.2017.11.010