Performance Estimation of an Implantable Epileptic Seizure Detector with a Low-power On-chip Oscillator

摘要: Abstract: Implantable closed-loop epilepsy controllers require ideally both accurate epileptic seizure detection andlow power consumption. On-chip oscillators can be used in implantable devices because they consume less powerthan other such as crystal oscillators. In this study, we investigated the tolerable error range of a lowerpower on-chip oscillator without losing accuracy detection. We 24 ictal and 14 interictal intrac-ranial electroencephalographic segments recorded from surgery patients. The performance variations withrespect to frequency errors were estimated terms specificity, modified sensitivity, timingdifference onset using Generic Osorio Frei Algorithm. wereset at ± 10% worst case. Our results showed that an affected specificity andmodified sensitivity by than 3%. addition, onsets detected with earlier or later with-out average timing difference varied within 0.5 s range. suggest thaton-chip could useful for low-power compensation circuitry requiringsignificant additional power. These findings help design systems detector andautomated stimulators intractable patients.Key words: biomedical devices, low power, oscillators, evaluation,