Minimally-invasive epileptogenic focus detection using the subdural electrodes manipulated by the shape-memory-alloy thin wire

We propose a subdural electrode array guided by a 0.3mm-diameter shape memory alloy guidewire for a minimally-invasive method of electrocorticogram recording. The measured electric characteristics showed that the proposed electrodes are compatible with the application of electrocorticogram recording. Somatosensory evoked potential was measured by the proposed method in the animal test in vivo. The results confirmed that the proposed electrode array is available for the electrocorticogram recording under a minimally invasive surgery.