Influence of contact size on the detection of HFOs in human intracerebral EEG recordings.

ABSTRACT:

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 5 mm(2)) and small (0.2 or 0.3 mm(2)) contacts. HFOs were marked manually during 5-min tracings in 131 pairs of adjacent large and sm

SUBMITTER: Chatillon CE 

PROVIDER: S-EPMC4496058 | biostudies-literature | 2013 Aug

REPOSITORIES: biostudies-literature