Electrophysiological aspects of sensory conduction velocity in healthy adults. 1. Conduction velocity from digit to palm, from palm to wrist, and across the elbow, as a function of age.

Martínez, Antonio Francisco Honguero; Barrio, M; Conde, Monserrat; Gutiérrez, Ana María

doi:10.1136/jnnp.41.12.1092

Cited by 39 publications

(9 citation statements)

References 9 publications

(16 reference statements)

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“…These results agree with those of Dreschler (1975), and the preferential involvement of the median nerve in the elderly could be explained by a chronic compression in the carpal tunnel, and by a higher sensitivity to anoxia of the median nerve of the limbs of older people (Dreschler, 1975). These results also agree with the conclusions of Cruz Martinez et al (1978b), and suggest that age causes changes particularly in the points where the nerves are more frequently compressed.…”

Section: Discetssioinsupporting

confidence: 89%

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Electrophysiological aspects of sensory conduction velocity in healthy adults. 2. Ratio between the amplitude of sensory evoked potentials at the wrist on stimulating different fingers in both hands.

Martínez¹,

Barrio²,

Conde³

et al. 1978

Journal of Neurology, Neurosurgery & Psychiatry

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S U M M ARY The normal ratio between the amplitude of the sensory evoked potential (SEP) at the wrist on stimulating digits 1, 2, 3, and 5 was determined in 44 healthy adult subjects. The first digit had the larger amplitude, and the fifth digit the smallest SEP. The amplitude expresses the density of sensory innervation in each finger. The ratio between the amplitude of different fingers varied according to the age of the subject. The amplitude of the SEP from a digit innervated by the median nerve decreased in the elderly more than the SEP amplitude of the digit innervated by the ulnar nerve, probably because of a chronic compression in the carpal tunnel. The changes in the normal amplitude ratio can be applied to the topographic diagnosis of radicular and brachial plexus lesions if a fixed segmental sensory innervation of the hand is accepted. In 44 right handed subjects the amplitude of the sensory evoked potentials at the wrist was significantly larger in the left hand. This asymmetry of sensory innervation between hands could be physiological, and suggests a greater density of sensory innervation in the left hand of right handed subjects.

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Section: Discetssioinsupporting

confidence: 89%

“…The series explored is the same as that in Cruz Martinez et al (1978b)347 healthy subjects aged from 21 to 77 years.…”

Section: Methodsmentioning

confidence: 99%

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Electrophysiological aspects of sensory conduction velocity in healthy adults. 2. Ratio between the amplitude of sensory evoked potentials at the wrist on stimulating different fingers in both hands.

Martínez¹,

Barrio²,

Conde³

et al. 1978

Journal of Neurology, Neurosurgery & Psychiatry

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“…Various physical functions are changed in aging. For example, autonomic nervous function declines (Pfeifer et al ., 1983), decrement of sensory conduction and changes in the shape of the evoked potentials to stimulation of the ulnar or median nerve (Cruz‐Martinez.A. et al ., 1978), and changes in tactile (Thornbury & Mistretta, 1981) and somesthetic sensitivity including thermal sensation (Kenshalo, 1986).…”

Section: Discussionmentioning

confidence: 99%

Effect of local application of cold or heat for relief of pricking pain

Saeki

2002

Nursing & Health Sciences

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The present study was designed to determine the effect of the application of cold or heat on the sensation of pricking pain based on autonomic responses. Electrical stimulation was applied to the antebrachium or brachium of subjects as an artificial pricking pain, and skin blood flow (BF) and skin conductance level (SCL) at the fingertip were measured. Pain sensation was evaluated using the visual analog scale. Pain stimulation produced a significant increase in SCL and a significant decrease in BF at both the antebrachium and brachium. Application of cold to the stimulation site using an ice-water pack reduced BF and SCL responses and pain sensation. Application of heat using a hot water bottle caused a significant increase in pain sensation and enhancement of BF and SCL responses. These results suggest that application of cold promotes relief of pricking pain sensation and suppression of autonomic responses, and that application of heat has no such effect. It is important that nurses ascertain the type of pain or source of pain and take proper measures for its relief.

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“…28 It has been suggested that subclinical en-trapments are the cause of this age-related decline in NCV. 12,20 Clearly, this is not the only explanation for the reduction in NCV seen with increasing age.…”

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confidence: 94%

Influence of age and height on nerve conduction

2001

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Previous studies demonstrated age- and height-related slowing of nerve conduction velocity (NCV) and reduction in nerve response amplitude. Unfortunately, many studies examined discontinuous populations, preventing regression analysis. The correlation coefficients of available studies vary widely, preventing clear conclusions. We retrospectively examined 3969 clinically normal subjects ranging in age from 20 to 95 years from a total of 22,420 electrodiagnostic studies done between 1986 and 1998. The correlation of NCV with height was stronger than with age. Regression equations using both factors account for 12--27% of the variance. Responses were seen in the majority of patients aged 70 years and older, but the percentage of normals who had no response increased with advancing age. Age was strongly inversely correlated with the amplitudes of both sensory and motor responses, accounting for 7--16% of the variance. Regression equations using both height and age improved this correlation, accounting for 7--22% of the variance. Therefore, both height and age must be taken into consideration when normal values are developed.

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Electrophysiological aspects of sensory conduction velocity in healthy adults. 1. Conduction velocity from digit to palm, from palm to wrist, and across the elbow, as a function of age.

Cited by 39 publications

References 9 publications

Electrophysiological aspects of sensory conduction velocity in healthy adults. 2. Ratio between the amplitude of sensory evoked potentials at the wrist on stimulating different fingers in both hands.

Electrophysiological aspects of sensory conduction velocity in healthy adults. 2. Ratio between the amplitude of sensory evoked potentials at the wrist on stimulating different fingers in both hands.

Effect of local application of cold or heat for relief of pricking pain

Influence of age and height on nerve conduction

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