Document Detail

Influence of contact size on the detection of HFOs in human intracerebral EEG recordings.
MedLine Citation:
PMID:  23578565     Owner:  NLM     Status:  Publisher    
OBJECTIVE: High frequency oscillations (HFOs) are brief electroencephalographic events associated with epileptic activity, and likely representing biological markers of the epileptogenic zone. HFOs are usually detected with intracranial EEG and detection is influenced by contact size. The size of commercially available intracerebral electrodes varies widely. This study assesses HFO detection rates from adjacent electrode contacts in human intracerebral recordings. METHODS: Intracerebral recordings were collected from 11 patients undergoing stereoelectroencephalographic investigation using hybrid depth electrodes containing adjacent large (0.8 or 5mm(2)) and small (0.2 or 0.3mm(2)) contacts. HFOs were marked manually during 5-min tracings in 131 pairs of adjacent large and small contacts. HFO rates per minute and mean event durations were compared between adjacent contacts. RESULTS: A minimal but statistically significant advantage in ripple detection was found in a subgroup of large contacts. Otherwise, HFO rates and mean event durations were not statistically different between groups. CONCLUSION: The size of clinical contacts within the studied range did not influence HFO detection in a clinically relevant manner. Larger contacts provide a minimal advantage for ripple detection. SIGNIFICANCE: Our findings suggest that commercially available intracerebral electrodes with contacts between 0.2 and 5mm(2) likely possess similar HFO detection abilities.
C E Châtillon; R Zelmann; J A Hall; A Olivier; F Dubeau; J Gotman
Related Documents :
21279335 - Tactile recalibration of auditory spatial representations.
19015685 - Fabrication of holographic diffractive optical elements for enhancing light collection ...
2705695 - Building sickness, are symptoms related to the office lighting?
186025 - In vivo measurement of pyridine nucleotide fluorescence from cat brain cortex.
16593825 - Light induction of gene expression in myxococcus xanthus.
8423435 - Auditory word recognition: extrinsic and intrinsic effects of word frequency.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-4-8
Journal Detail:
Title:  Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology     Volume:  -     ISSN:  1872-8952     ISO Abbreviation:  Clin Neurophysiol     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-4-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100883319     Medline TA:  Clin Neurophysiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013. Published by Elsevier Ireland Ltd.
Department of Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, Canada. Electronic address:
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Subdural to subgaleal EEG signal transmission: The role of distance, leakage and insulating affector...
Next Document:  Distal Fibula Metastasis of Cholangiocarcinoma.