This communication aims at giving some insights into the use of Independent Component Analysis (ICA) for solving biomedical problems. First the concept of ICA is reviewed and different classes of ICA methods are described. Next a survey on most encountered biomedical problems solved using ICA is detailed. Finally a comparative performance study of thirteen ICA algorithms is performed on biomedical

Mitarai, Sayaka, Thomas D. Reed, and Atsuko Yatani. Changes in ionic currents and b-adrenergic receptor signaling in hypertrophied myocytes overexpressing Gaq. Am J Physiol Heart Circ Physiol 279: H139–H148, 2000.—Transgenic overexpression of Gaq causes cardiac hypertrophy and depressed contractile responses to b-adrenergic receptor agonists. The electrophysiological basis of the altered myocar...

We propose a system to real environmental noise and channel mismatch for forensic speaker verification systems. This method is based on suppressing various types of real environmental noise by using independent component analysis (ICA) algorithm. The enhanced speech signal is applied to mel frequency cepstral coefficients (MFCC) or MFCC feature warping to extract the essential characteristics o...

Glasgow Coma Scale score was E3 V1 M6, the blood pressure 130/70 mm Hg, the pulse 80/min, and she was apyretic. The NIH Stroke Scale score was 25. Throat examination revealed a mild inflammation with swelling of the peritonsillar area. Blood examinations were normal. Brain MRI with diffusion-weighted images demonstrated a large cerebral infarction in the left middle cerebral artery territory, M...

To cite: García-Cabo C, Benavente L, Calleja S. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2015213973 DESCRIPTION A 78-year-old man with a history of atrial fibrillation and hypertension was admitted to the hospital for a mild left hemispheric stroke. He reported having jaw claudication, frontotemporal headache and malaise for the past several months. MRI ang...

The intracranial internal carotid artery (ICA) is a muscular artery and lacks external elastic lamina (EEL). Stenosis of the intracranial ICA is relatively uncommon, but the most common site is the cavernous portion. The characteristics of the arterial wall structures were examined using serial 3-mm sections of 32 intracranial ICAs obtained from 50 cadavers to identify where the EEL disappeared...

We propose source-space independent component analysis (ICA) for separation, tomography, and time-course reconstruction of EEG and MEG source signals. Source-space ICA is based on the application of singular value decomposition and ICA on the neuroelectrical signals from all brain voxels obtained post minimum-variance beamforming of sensor-space EEG or MEG. We describe the theoretical backgroun...

Release of the neuropeptide egg-laying hormone (ELH) from Aplysia bag cell neurons augments the endogenous bursting pacemaker activity of neuron R15. We have studied the ionic mechanisms underlying the effect of ELH in voltage-clamped R15 neurons. Both electrical discharge of the bag cells, which releases endogenous ELH, and application of synthetic ELH on cell R15 result in an increase in two ...

BACKGROUND AND PURPOSE Although clinically important, proper assessment of intracranial arterial collateral pathways by transcranial color-coded duplex sonography (TCCD) in patients with internal carotid artery (ICA) high-grade stenosis or occlusion is occasionally made difficult by an insufficient temporal bone window, an unfavorable insonation angle, or low flow velocity or volume. In these c...