dr. ing. W.X. (Geertjan) Overwijk

dr. ing. W.X. (Geertjan) Overwijk

Assistant Professor
dr. ing. W.X. (Geertjan) Overwijk
  • Neurologen

Research Programs




Geertjan Huiskamp obtained his PhD degree at the University  of Nijmegen in 1989 on work on the inverse problem of electrocardiography.  After having spent  post-doc  research at the University of California at Irvine on inverse methods and again at the University of Nijmegen  on propagation models  for ventricular  activation, in 1996 he moved to the department of Clinical Neurophysiology  of the University Medical  Center Utrecht, the Netherlands, where he got involved in source localization for pre-surgical evaluation of epilepsy patients.  Since 2000 he is staff physicist at the department of Neurology and Neurosurgery, University Medical Center Utrecht, where his main tasks are research and technology assessment centered around the invasive epilepsy monitoring unit. His current interests are in advanced signal processing of spontaneous and evoked EEG in epilepsy patients. 

Side Activities

2012 - lecturer signal analysis EEG technician LOI

2017 member scientific committee 3rd international conference on basic and applied multimodal imaging BaCI 2017

Research Output (113)

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

Mouthaan Brian E., Jansen Floor E., Colon Albert J., Huiskamp Geertjan M., van Eijsden Pieter, Leijten Frans S.S., Braun Kees P.J. 29 Oct 2021, In: Clinical Neurophysiology. 133 , p. 126-134 9 p.

The value of intra-operative electrographic biomarkers for tailoring during epilepsy surgery:from group-level to patient-level analysis

Demuru Matteo, Kalitzin Stiliyan, Zweiphenning Willemiek, van Blooijs Dorien, van’t Klooster Maryse, Van Eijsden Pieter, Leijten Frans, Zijlmans Maeike, Braun Kees, Ferrier Cyrille, Gebbink Tineke, Gosselaar Peter, Huiskamp Geertjan, van Klink Nicole, Ophorst Janine, van Rijen Peter, van der Salm Sandra, Winter Anouk Velders de, 4 Sep 2020, In: Scientific Reports. 10

A skew-based method for identifying intracranial EEG channels with epileptic activity without detecting spikes, ripples, or fast ripples

Mooij Anne H., Frauscher Birgit, Gotman Jean, Huiskamp Geertjan J.M. 22 Nov 2019, In: Clinical Neurophysiology. 131 , p. 183-192 10 p.

What are you looking at? Unrippling terminology for high frequency activity

Noorlag Lotte, van Klink Nicole, Huiskamp Geertjan, Zijlmans Maeike Nov 2019, In: Clinical Neurophysiology. 130 , p. 2132-2133 2 p.

Pathological responses to single pulse electrical stimuli in epilepsy:the role of feedforward inhibition

Hebbink Jurgen, Huiskamp Geertjan, van Gils Stephan A, Leijten Frans S S, Meijer Hil G E 27 Aug 2019, In: European Journal of Neuroscience. 51 , p. 1122-1136 15 p.

Simultaneous MEG and EEG to detect ripples in people with focal epilepsy

van Klink Nicole, Mooij Anne, Huiskamp Geertjan, Ferrier Cyrille, Braun Kees, Hillebrand Arjan, Zijlmans Maeike 1 Jul 2019, In: Clinical Neurophysiology. 130 , p. 1175-1183 9 p.

An observation of anatomical clustering in inputs to primary motor cortex in cortico-cortical brain surface evoked potentials

Miller Kai J., Huiskamp Geertjan, Van Blooijs Dorien, Hermes Dora, Gebbink Tineke A., Ferrier Cyrille H., Van Rijen Peter C., Gosselaar Peter, Ramsey Nick F., Leijten Frans S.S. 1 Feb 2019,

Diagnostic accuracy of interictal source imaging in presurgical epilepsy evaluation:A systematic review from the E-PILEPSY consortium

Mouthaan Brian E., Rados Matea, Boon Paul, Carrette Evelien, Diehl Beate, Jung Julien, Kimiskidis Vasilios, Kobulashvili Teia, Kuchukhidze Giorgi, Larsson Pål G., Leitinger Markus, Ryvlin Philippe, Rugg-Gunn Fergus, Seeck Margitta, Vulliémoz Serge, Huiskamp Geertjan, Leijten Frans S.S., Van Eijsden Pieter, Trinka Eugen, Braun Kees P.J. 1 Jan 2019, In: Clinical Neurophysiology. 130 , p. 845-855 11 p.

A Comparison of Evoked and Non-evoked Functional Networks

Hebbink Jurgen, van Blooijs Dorien, Huiskamp Geertjan, Leijten Frans S S, van Gils Stephan A, Meijer Hil G E 6 Dec 2018, In: Brain Topography. 32 , p. 405-417 13 p.

Electrocorticographic high gamma language mapping:Mind the pitfalls of comparison with electrocortical stimulation

Mooij A. H., Sterkman L. C.M., Zijlmans M., Huiskamp G. J.M. May 2018, In: Epilepsy and Behavior. 82 , p. 196-199 4 p.

All research output

Thank you for your review!

Has this information helped you?

Please tell us why, so that we can improve our website.

Working at UMC Utrecht





Practical maakt gebruik van cookies

Deze website maakt gebruik van cookies Deze website toont video’s van o.a. YouTube. Dergelijke partijen plaatsen cookies (third party cookies). Als u deze cookies niet wilt kunt u dat hier aangeven. Wij plaatsen zelf ook cookies om onze site te verbeteren.

Lees meer over het cookiebeleid

Akkoord Nee, liever niet