Optimized surface arrays for stable electroencephalogram recording
When placed over the skull, NeuroNexus surface arrays with optimized designs can be used to record electroencephalograms (EEG). NeuroNexus EEG arrays can be easily attached to the skull with dental cement. Stable signals have been obtained over several months.
Dr. Liset de la Prida (Instituto Cajal - CSIC) and her assistant Manuel Valero have been testing our EEG probes extensively. They say: "Recordings with the multi-site grid were stable over periods of months (up to 3 months were tested without a significant reduction of signal quality). We evaluated EEG activity at different time points over epileptogenesis, to track for electrophysiological changes leading to a chronic epileptic state. During periods free of epileptiform activities, EEG grids allow assessing natural brain rhythms such as exploratory and REM theta (4-12 Hz). Interestingly, the spatial distribution of theta power in the EEG grid mirrored the location of the most dorsal underlying hippocampus. Over the course of epileptogenesis, seizures and other types of large amplitude interictal discharges were easily localized with the EEG grid."
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