Geertjan M. Huiskamp

Machine learning for (non–)epileptic tissue detection from the intraoperative electrocorticogram

Sem Hoogteijling, Eline Schaft, Evi H M Dirks, Sven Straumann et autres

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Developmental trajectory of transmission speed in the human brain

Dorien van Blooijs, Max van den Boom, Jaap F. van der Aar, Geertjan M. Huiskamp et autres

The structure of the human connectome develops from childhood throughout adolescence to middle age, but how these structural changes affect the speed of neuronal signaling is not well described. In 74 subjects, we measured the latency of cortico-cortical evoked responses across association …

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High-resolution electric source imaging for presurgical evaluation of tuberous sclerosis complex patients

Brian E. Mouthaan, Floor E. Jansen, Albert Colon, Geertjan M. Huiskamp et autres

OBJECTIVE: We retrospectively assessed the localizing value of patient-history-based semiology (PHS), video-based semiology (VS), long-term monitoring video electroencephalography (LTM-VEEG) and interictal high resolution electric source imaging (HR-ESI) in the presurgical workup of patients with tuberous sclerosis complex (TSC). METHODS: Data from 24 …

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Response to: Guidelines for the clinical use in epilepsy surgery evaluation of magnetoencephalography and electroencephalography for source localization

Brian E. Mouthaan, Geertjan M. Huiskamp, Frans S. S. Leijten, Kees P. J. Braun

We thank Drs. Bagic and Burgess1 for their interest in our publication2 and insightful comments. The issues raised by them were already pointed out to us by Dr. Funke (University of Texas Health Science Center), in response to which we had submitted …

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Epileptic high‐frequency oscillations in intraoperative electrocorticography: The effect of propofol

Maeike Zijlmans, Geertjan M. Huiskamp, Olaf L. Cremer, Cyrille H. Ferrier et autres

PURPOSE: Epileptic high-frequency oscillations (HFOs; 80-500 Hz) may be used to guide neurosurgeons during epilepsy surgery to identify epileptogenic tissue. We studied the effect of the anesthetic agent propofol on the occurrence of HFOs in intraoperative electrocorticography (ECoG). METHODS: We selected patients …

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The effects of blood vessels on electrocorticography

Martin G. Bleichner, Mariska J. Vansteensel, Geertjan M. Huiskamp, Dora Hermes et autres

Electrocorticography, primarily used in a clinical context, is becoming increasingly important for fundamental neuroscientific research, as well as for brain-computer interfaces. Recordings from these implanted electrodes have a number of advantages over non-invasive recordings in terms of band width, spatial resolution, smaller …

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Gain of the human dura in vivo and its effects on invasive brain signal feature detection

Aldemar Torres Valderrama, Robert Oostenveld, Mariska J. Vansteensel, Geertjan M. Huiskamp

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3T versus 1.5T phased‐array MRI in the presurgical work‐up of patients with partial epilepsy of uncertain focus

Maeike Zijlmans, G.A.P. de Kort, Theodore D. Witkamp, Geertjan M. Huiskamp et autres

PURPOSE: To study 3T compared to 1.5T phased array magnetic resonance imaging (MRI) in the presurgical work-up of patients with epilepsy with complex focus localization. MATERIALS AND METHODS: In all, 37 patients (>10 years) in preoperative work-up for epilepsy surgery were offered …

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Removal of the ballistocardiographic artifact from EEG–fMRI data: a canonical correlation approach

Sara Assecondi, Hans Hallez, Steven Staelens, Anna Maria Bianchi et autres

The simultaneous recording of electroencephalogram (EEG) and functional magnetic resonance imaging (fMRI) can give new insights into how the brain functions. However, the strong electromagnetic field of the MR scanner generates artifacts that obscure the EEG and diminish its readability. Among them, …

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Detection of temporal lobe spikes: Comparing nasopharyngeal, cheek and anterior temporal electrodes to simultaneous subdural recordings

Maeike Zijlmans, Geertjan M. Huiskamp, Alexander C. van Huffelen, Willy P.J. Spetgens et autres

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High-resolution Source Imaging in Mesiotemporal Lobe Epilepsy: A Comparison Between MEG and Simultaneous EEG

Frans S. S. Leijten, Geertjan M. Huiskamp, Irene Hilgersom, Alexander C. van Huffelen

Magnetic source imaging is claimed to have a high accuracy in epileptic focus localization and may be a guide for epilepsy surgery. Non-lesional mesiotemporal lobe epilepsy (MTLE), the most common form of epilepsy operated on, has different etiologies, which may affect the …

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Modality-specific Spike Identification in Simultaneous Magnetoencephalography/Electroencephalography

Maeike Zijlmans, Geertjan M. Huiskamp, Frans S. S. Leijten, Wil M. van der Meij et autres

Epileptiform spikes may have a different morphology and signal-to-noise ratio in simultaneously recorded EEGs and magnetoencephalograms (MEGs) that may lead to differences in the identification of spikes if both the modalities are presented separately. Moreover, there are no criteria for MEG spikes. …

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