We propose an approach called the Null Space Component Analysis (NCA) algorithm to solve the noisy blind source separation (BSS) problem. In a set of m linearly independent source signals, each signal is associated with a separating operator that includes the signal in its null space and repels other signals from the space. The signal model induced by the m operators represents the space where ...

Funding for biomedical research has shifted from government to the private sector. One reason is rapid expansion in the number and strength of U.S. biotechnology companies, which collectively spend more than $6 billion a year on biomedical research. Most of these companies are not yet profitable and therefore depend on flows of capital from private investors, Wall Street, and large pharmaceutic...

A method is presented for the compression of biomedical images using in place of the discrete cosine transform (DCT) the discrete orthogonal Gauss-Hermite transform (DOGHT). The latter expands the signals on a basis of Gauss-Hermite functions instead of the cosine functions and leads, in many practical cases, to 2-3 times better compression for the same reconstruction error as the DCT. This is ...

In this paper, a MATLAB-based graphical user interface (GUI) software tool for general biomedical signal processing and analysis of functional neuroimaging data is introduced. Specifically, electroencephalography (EEG) and electrocardiography (ECG) signals can be processed and analyzed by the developed tool, which incorporates commonly used temporal and frequency analysis methods. In addition t...

Short title: HLA II-induced signals in gingival fibroblasts. 1. Department of Patho-physiology Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan 2. First Department of Pathology, Hyogo College of Medicine, Hyogo, Japan 3. Department of Allergy and Immunology, Saitama Medical School, Saitama, Japan 4. (current address) Depa...

Parkinson's disease (PD) is a neurodegenerative disease that occurs due to loss of dopamine, a neurotransmitter and slow destruction of neurons. Brain area affected by progressive destruction of neurons is responsible for controlling movements, rigid gestures of patients with PD, uncontrollable position, postural instability, and tremor. Commercial activity-promoting gaming systems such as the ...

LNA, which stands for low noise amplifier, as the name suggests, is used for amplifying weak and very low power signals. LNA is an important part of transceiver system. It is the fundamental building block of communication systems. LNA is used in industrial, scientific and medical bands (ISM). Radios, cellular telephones, GPS receiver, and satellite communication, etc. employ LNA. In this paper...

In biomedical signal processing, wavelet transform has gained an edge over other existing methods due to its highly efficient transforming capabilities. Relative wavelet energy is a technique used to extract meaningful and concise information from wavelet coefficients for signal classification. The possibility of classifying large datasets combined with the simplicity of the process makes this ...

Miniaturization of optical instruments for biomedical applications requires the development of efficient means to deliver excitation light to – and collect the resulting signals from – biomedical tissue by an optical microchip, as well as spectral analysis of the acquired information on the chip. We have investigated light collection by integrated waveguides, invented a method for on-chip confo...

Healthcare Wearables This image for article 2202987 by Ujjaval Gupta, Gim Song Soh, Hong Yee Low, and co-workers represents the emergence of wearable sensors, knitted with fully integrated circuitry, biomedical or sports applications. It depicts how human movement can be captured as electrical signals stretching conductive loops. enables unsupervised monitoring joints without disrupting user's ...