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Titolo:
PRINCIPLES OF DIGITAL SAMPLING OF A PHYSIOLOGICAL SIGNAL
Autore:
NILSSON J; PANIZZA M; HALLETT M;
Indirizzi:
NINCDS,MED NEUROL BRANCH,HUMAN MOTOR CONTROL SECT,BLDG 10,ROOM 5N226 BETHESDA MD 20892 NINCDS,MED NEUROL BRANCH,HUMAN MOTOR CONTROL SECT BETHESDA MD 20892 FDN CLIN LAVORO,CLIN NEUROPHYSIOL LAB CASTEL GOFFREDO ITALY
Titolo Testata:
Electroencephalography and clinical neurophysiology
fascicolo: 5, volume: 89, anno: 1993,
pagine: 349 - 358
SICI:
0013-4694(1993)89:5<349:PODSOA>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVOKED-POTENTIALS; SPECTRUM;
Keywords:
EMG; NERVE CONDUCTION VELOCITY; EEG AND EVOKED POTENTIALS; FREQUENCY RANGES; FILTERS; SAMPLING FREQUENCY; NYQUIST THEOREM; FOURIER TRANSFORM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
J. Nilsson et al., "PRINCIPLES OF DIGITAL SAMPLING OF A PHYSIOLOGICAL SIGNAL", Electroencephalography and clinical neurophysiology, 89(5), 1993, pp. 349-358

Abstract

The practice of clinical neurophysiology requires fast, reliable and accurate assessment of a variety of biologic signals. Appropriate filters and rates of analog-to-digital sampling must be used to avoid distorting the signal. Using principles of sampling theory and examples, we describe the frequency content of signals encountered in clinical neurophysiology laboratories, offer guidelines for band-limiting frequencies, and give rules for determining minimal sampling frequencies. Errors introduced by undersampling (aliasing) are illustrated. When sophisticated computational techniques, such as discrete Fourier transform,are used to reconstruct the original wave form, a sampling frequency just above the double of the highest frequency content of the signal is adequate. Sampling neurophysiologic wave forms for direct display, however, requires a sampling frequency at least 4 times as high as thatof the upper frequency filter.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/08/20 alle ore 20:22:07