Cardiometrix

Traditionally, heart rate (HR) monitoring requires the use of wearable devices, which can be inconvenient and uncomfortable, particularly during sleep and meditation.  A study published yesterday in Scientific Reports introduces a non-invasive approach to noncontact HR detection, utilizing Soli radar technology (millimeter wave radar) embedded in a portable device, in this case, the Google Nest Hub. The Soli radar chip featured in this study offers a compact dimension and can be easily integrated into various devices, making it a promising alternative to traditional HR monitoring methods. Unlike existing approaches in the literature that rely on high-gain antennas and facing the user's chest or back, this Soli-based approach overcomes these limitations, making it suitable for sleep and meditation tracking applications. Advanced signal processing (SP) and machine learning (ML) techniques achieve impressive accuracy levels on two distinct datasets: a sleep dataset comprising data fr...

A novel inexpensive diagnostic methodology promises to enhance our understanding of vascular elasticity. This innovative approach leverages the patient's heart and pulse rhythms to assess the flexibility of blood vessels.  The elasticity of blood vessels, the ability of their walls to stretch and contract, plays a pivotal role in our cardiovascular health. When blood vessel walls become stiffer, individuals become more sensitive to fluctuations in blood pressure, making them more vulnerable to serious conditions like atherosclerosis and heart disease. The scientists at Samara University have proposed a more straightforward method for evaluating vascular elasticity. This methodology is based on the analysis of differences between the patient's heart and pulse rhythms. According to Dr. Alexander Fedotov, an associate professor at the Department of Laser and Biotechnical Systems at Samara University, "Periodic fluctuations in arterial blood pressure, known as Mayer waves, can...