signal averaging

An MRI term for signal-to-noise improvement by averaging several free induction decays (FIDs) under similar conditions. The approximate amount of improvement in signal-to-noise (S/N) ratio is calculated as the square root of the number of excitations.

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References in periodicals archive ?

The term Pattern Visually Evoked Potential (P-VEP) refers to electrical potentials which are recorded from the scalp overlying visual cortex, P-VEP waveforms are extracted from the electro-encephalogram (EEG) by signal averaging.

Classification Analysis of Occlusion Therapy for Amblyopic (Lazy / Squint eye) using Pattern Visual Evoked Potential (P-VEP)

Separation of the buried EP wave forms from the other electrical activity is accomplished by signal averaging. Stimuli are given repetitively and the computer averages the new data acquired after each stimulus (Random EEG + EP) with the averaged results from previous stimuli stored in its memory.

Evaluation of analgesic effect of acupuncture by using SEPs: an objective study

Additional features include video signal display, signal peak selection and freely adjustable signal averaging, which enables optimisation of the measurement task.

Down to the nano-scale: confocal sensors measure texture and surface finish of laser-machined components: Chris Jones, Managing Director at Micro-Epsilon UK discusses how non-contact confocal displacement sensors are helping to inspect the shape, size and surface topography of MEMS (Micro Electro Mechanical or Micro Electronic Systems) structures to nanometre resolution

The research was financially supported by the state program "Science" # 936 "Development of medical nanosensors and hardware-software complex for noninvasive micropotential registration during human biopotential real-time measuring in wide frequency band without signal averaging and filtration for electrophysiological research and artificial limb control".

Analysis of the effect of filtering elements on EEG and EMG recorded with high sensitivity channel based on nanoelectrodes

Faulkner,"Optimum Hysteresis Level, Signal Averaging Time and Handover Delay," Proc.

Performance Evaluation of Signal Strength and Residual Time based Vertical Handover in Heterogeneous Wireless Networks

The fact that SSEP remains consistent was used to implement a signal averaging method to extract the SSEP [4, 5].

Quasi-stationarity of EEG for intraoperative monitoring during spinal surgeries

Bunde et al., "Phase-rectified signal averaging detects quasi-periodicities in non-stationary data," Physica A, vol.

Monitoring fetal heart rate during pregnancy: contributions from advanced signal processing and wearable technology

ADLINK's 14-bit PCIe-9852 two-channel 200-MS/s digitizer also includes onboard signal averaging. Alan Hsu.

Test systems in kit form

But the initial defect of the valve can be undetected because of engine noise and signal averaging. The model is adaptive, which means that the diagnostic program obtains the base model after each change of the drive system element.

Adaptive model of engine vibration signal for diagnostics of mechanical defects/Variklio vibraciju signalu adaptyvusis modelis mechaniniams defektams diagnozuoti

Signal averaging is an effective de-noising method (15).

Late ventricular potentials can be predicted from twelve-lead ECG in post-infarction heart failure