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In this paper, we present a seizure detector that is part of an implantable CMOS integrated device intended to identify seizure onsets and trigger focal treatment to disrupt seizure progression. The detector consists of a preamplifier, voltage level detectors, digital demodulators and a high-frequency detector. Variable gain amplification, adjustable threshold voltage identification and tunable recognition...
In this paper, we present an implantable CMOS integrated device that automatically detects epileptic seizure onsets. By recognizing partial-onset seizures, it can improve epilepsy treatment. The circuit consists of a chopper stabilized preamplifier, comprising a modulator, an amplifier, a high-pass filter with low cut-off frequency, and a voltage span detector. The proposed low-power detector extracts...
This paper develops a design of two-dimensional (2- D) stable digital filters starting from Darlington-type gyrator networks and then applying the Generalized Bilinear transformation (GBT). The coefficients of the digital transfer function are obtained as functions of gyrator constant (g), in addition to the other impedances. Design examples are given to illustrate the usefulness of the proposed technique.
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