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Memory performance has been reported to be associated with electroencephalogram (EEG) alpha activity. This study aimed to improve short term memory performance by individual alpha neurofeedback training (NFT). With appropriate protocol designed for NFT, the experimental results showed that the participants were able to learn to increase the relative(More)
Healthcare electronics count on the effectiveness of the on-patient signal preprocessing unit to moderate the wireless data transfer for better power efficiency. In order to reduce the system power in long-time ECG acquisition, this work describes an on-patient QRS detection processor for arrhythmia monitoring. It extracts the concerned ECG part, i.e., the(More)
A critical problem in using steady-state visual evoked potential (SSVEP) based brain-computer interfaces (BCIs) for clinical and commercial use is the visual fatigue the user may suffer when staring at flashing stimuli. Aiming at the design of user-friendly BCIs with satisfactory performance, this work is to preliminarily investigate how different colors(More)
In recent years, steady-state visual evoked potential (SSVEP) based brain-computer interface (BCI) has received much attentions. However, most SSVEP based BCI devices are not portable and have high price, which are not suitable to be used for clinical and commercial purpose. Thanks to the low cost and portable Emotiv EPOC, it brings BCI into daily life. In(More)
This paper proposes a differential switched-capacitor (SC) biquad filter exploiting a hybrid structure. The 1 active core is an operational amplifier (OpAmp) whereas the 2 is an improved comparator-based circuit (CBC). The advantages of this new structure are justified by the reductions of power and transistor sizes. Optimized in a 65-nm CMOS process, when(More)
A unified receiver front-end (RFE) for mobile TV covering the VHF-III, UHF and L bands is described. Performance, power and area efficiencies are advanced in threefold: 1) a gain-boosting current-balancing balun-LNA exhibits high linearity, wideband output balancing and adequate against gain control; 2) a current-reuse mixer-low-pass-filter merges(More)
A 0.016-mm 144W three-stage amplifier capable of driving 1-to-15-nF capacitive load is described. It is optimized via combining current-buffer Miller compensation and parasitic-pole cancellation (via an active left-half-plane zero circuit) to extend the drivability with small power and area. Fabricated in 0.35m CMOS, the minimum gain-bandwidth product(More)
RF-tunable blocker-tolerant receivers (RXs) enhance the flexibility of multiband multistandard radios at low cost (Fig. 2.4.1). The mixer-first RX [1] delays the signal amplification to baseband (BB) by frequency-translating the BB lowpass response to RF as bandpass. This raises the out-of-band (OB) IIP3 (27dBm) at the expense of NF (5.5dB) and power (60mW)(More)
The complexity of droplet hydrodynamics on a digital microfluidic (DMF) system eventually weakens its potential for application in large-scale chemical/biological micro-reactors. We describe here an intelligent DMF technology to address that intricacy. A wide variety of control-engaged droplet manageability is proposed and demonstrated through the operation(More)
Point-of-use (PoU) biological/chemical assays are aimed to transform bulky laboratory instruments into easy-to-use lab-on-a-chip platforms, bringing down the cost, size, and sample-use by orders of magnitude [1,2]. Micro-Nuclear Magnetic Resonance (NMR) is a trail-blazing tool for target pinpointing, by utilizing functionalized magnetic nanoparticles (MNPs)(More)