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CMAP dispersion, amplitude decay, and area decay in a normal population.
Muscle Nerve. 1993 Nov; 16(11):1181-7.MN

Abstract

The aim of this investigation was to define the boundaries of compound motor action potential (CMAP) dispersion, amplitude decay, and area decay in a control population and determine their dependence on external variables such as age and interelectrode distance. Measurements were made from median, ulnar, and common peroneal motor nerves of 110 normal subjects of ages 15-90 years. Significant differences between nerves were found in mean values of each parameter. Dispersion and amplitude decay increased with the square of age in all three nerves, while area decay increased with age in the median nerve. Dispersion was the main cause of amplitude decay. Use of regression equations to predict dispersion and amplitude decay in each nerve significantly tightened confidence limits and should therefore increase the accuracy of these parameters in detecting demyelinating pathology in peripheral nerve.

Authors+Show Affiliations

Department of Neurology, Dunedin Hospital, New Zealand.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

8413370

Citation

Taylor, P K.. "CMAP Dispersion, Amplitude Decay, and Area Decay in a Normal Population." Muscle & Nerve, vol. 16, no. 11, 1993, pp. 1181-7.
Taylor PK. CMAP dispersion, amplitude decay, and area decay in a normal population. Muscle Nerve. 1993;16(11):1181-7.
Taylor, P. K. (1993). CMAP dispersion, amplitude decay, and area decay in a normal population. Muscle & Nerve, 16(11), 1181-7.
Taylor PK. CMAP Dispersion, Amplitude Decay, and Area Decay in a Normal Population. Muscle Nerve. 1993;16(11):1181-7. PubMed PMID: 8413370.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - CMAP dispersion, amplitude decay, and area decay in a normal population. A1 - Taylor,P K, PY - 1993/11/1/pubmed PY - 1993/11/1/medline PY - 1993/11/1/entrez SP - 1181 EP - 7 JF - Muscle & nerve JO - Muscle Nerve VL - 16 IS - 11 N2 - The aim of this investigation was to define the boundaries of compound motor action potential (CMAP) dispersion, amplitude decay, and area decay in a control population and determine their dependence on external variables such as age and interelectrode distance. Measurements were made from median, ulnar, and common peroneal motor nerves of 110 normal subjects of ages 15-90 years. Significant differences between nerves were found in mean values of each parameter. Dispersion and amplitude decay increased with the square of age in all three nerves, while area decay increased with age in the median nerve. Dispersion was the main cause of amplitude decay. Use of regression equations to predict dispersion and amplitude decay in each nerve significantly tightened confidence limits and should therefore increase the accuracy of these parameters in detecting demyelinating pathology in peripheral nerve. SN - 0148-639X UR - https://www.unboundmedicine.com/medline/citation/8413370/CMAP_dispersion_amplitude_decay_and_area_decay_in_a_normal_population_ L2 - https://doi.org/10.1002/mus.880161107 DB - PRIME DP - Unbound Medicine ER -