Stimulus artefact in somatosensory evoked potential measurement

When an electrical stimulus is used to evoke action potentials in peripheral nerves or the spinal cord, the stimulus causes an artefact which may interfere with measurement of the evoked potentials. This artefact, unlike all other sources of noise in the measurement, cannot be reduced by ensemble av...

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Bibliographic Details
Published in:Medical & biological engineering & computing 1997-05, Vol.35 (3), p.211-215
Main Authors: SCOTT, R. N, MCLEAN, L, PARKER, P. A
Format: Article
Language:English
Subjects:
Biological and medical sciences
Biomedical engineering
Evoked Potentials, Somatosensory
False Positive Reactions
Fundamental and applied biological sciences. Psychology
Humans
Signal Processing, Computer-Assisted
Somesthesis and somesthetic pathways (proprioception, exteroception, nociception)
interoception
electrolocation. Sensory receptors
Spinal Cord - physiopathology
Studies
Vertebrates: nervous system and sense organs
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Summary:When an electrical stimulus is used to evoke action potentials in peripheral nerves or the spinal cord, the stimulus causes an artefact which may interfere with measurement of the evoked potentials. This artefact, unlike all other sources of noise in the measurement, cannot be reduced by ensemble averaging. Confusion about the origin and transmission of stimulus artefact has led to considerable frustration in spinal somatosensory evoked potential (SSEP) measurements. The three mechanisms by which stimulus artefact is coupled into the measuring system are identified, and means for their reduction are discussed.
ISSN:0140-0118
1741-0444
DOI:10.1007/BF02530040