here are two predominant types of noise T that contaminate the electrocardiogram (ECG) acquired during a stress test: the baseline wander noise (BW) and electrode motion artifact, and electromyogram-induced noise (EMG) [ 11. BW noise is at a lower frequency, caused by respiration and motion of the subject or the leads. The frequency components of BW noise are usually below 0.5 Hz, and extend in...

Noise exposure has been characterized as a stressor, and its non-auditory effects on the central nervous system have been established both epidemiologically and experimentally. Little is known about the impact of impulse noise on the brain, however. In this study, we examined the effects of impulse noise stress on spatial learning and memory and on associated changes in the hippocampus. Rats we...

Occupational noise enhances the risk of several cardiovascular and non-cardiovascular diseases. The reason behind the drastic effects of noise exposure is the excessive generation of reactive oxygen species molecules. The present study investigates oxidative stress due to occupational noise exposure in 192 male smoking workers exposed to normal noise (sound level ≤80 dBA), low noise (sound leve...

Mechanical stress has a strong effect on the magnitude of the Barkhausen-noise in structural steels. Because the measurements are performed at the surface of the material, for a sample sheet, the full effect can be described by a biaxial stress field. The measured Barkhausen-noise is dependent on the orientation of the exciting magnetic field relative to the axis of the stress tensor. The sampl...

conclusions postural stress among female machinists can increase the level of si to fairly risky and dangerous. also, changes in rating hand/wrist qec scores with hand/wrist si score were proportional in the studied samples. the si can increase under the influence of noise above 85 db, although it is not statistically significant. results there was no significant difference between work experie...

Stress is prevalent in human life and threatens both physical and mental health; stress coping is thus of adaptive value for individual's survival and well-being. Although there has been extensive research on how the neural and physiological systems respond to stressful stimulation, relatively little is known about how the brain dynamically copes with stress evoked by this stimulation. Here we ...

ULow-frequency ambient noise under pack ice of the central Arctic Ocean has long-term variations mmj (periods greater than I h) which correlate highly with composit -measures of stress applied to the mice by wind, current, and drift. These composites are the horizontal ice stress and the stress moment, and are derived from meteorological and oceanographic data observed simultaneously with the n...