IEEE Transactions on Biomedical Engineering

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Towards Improving the Quality of Electrophysiological Signal Recordings by Using Microneedle Electrode Arrays
This work demonstrates a microneedle electrode array (MEA) for high-quality electrophysiological signal recordings. The microneedles with proper length on the MEA can penetrate through the corneum and reach the epidermis of subjects, which could avoid the influence of corneum and fix the electrode on the body surface for high-quality signal recording especially during body movements. Compared with commonly used dry electrodes, the MEA has lower and more stable interface impedance and can acquire different bioelectric signals (EMG and ECG) with significantly higher signal-to-noise ratio. Besides, there was no report about any discomfort like bleeding or inflammation by all the subjects... Read more