Why the study?
Traditional methods for biomedical measurements in high-noise environments inject very high-energy signals that require large, expensive, and potentially toxic systems.
A non-invasive method using low-intensity signals and a lock-in amplifier can achieve noise suppression for extracting biomedical signals.
May enable low-energy biomedical measurements in noise; leaves open clinical validation in prospective studies.
Modern measurement systems must have the ability to perform measurements in high-level noise environments. The field with a particularly high content of noise is biomedicine. The traditional approach to solving this problem is to inject very high energy signals in order to minimize the impact of noise on the measurement (Magnetic resonance imaging, X-rays). Unfortunately, this means that these systems are very large, expensive, difficult to maintain and often contain toxic materials. This paper presents research aimed at finding a non-invasive method that uses low-intensity signals that are completely harmless to humans, and at the same time allows extracting the measured signal from a highly noised environment. Noise suppression was achieved with a lock-in amplifier.
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Bojan Kuljić (2024) studied this question.
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