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Start Over Author "Mellina V" Journal functional neurology
2 results on '"Mellina V"'

1. Estimation of the conduction velocity of sympathetic sudomotor C fibres in healthy subjects: study of sympathetic skin reflex

Author

Parisi, Leoluca, Rossi, P, Valente, Gabriele Oreste Renato, Fattapposta, Francesco, Mellina, V, Martini, A, Pierelli, Francesco, and Serrao, Mariano

Subjects
Male, Leg, Sympathetic Nervous System, Electromyography, Neural Conduction, Action Potentials, Galvanic Skin Response, Middle Aged, Nerve Fibers, Sympathetic Fibers, Postganglionic, Arm, Humans, Female, Aged, Skin
Abstract

The aim of this study was to establish a simple method for estimating the conduction velocity (CV) of post-ganglionic sympathetic sudomotor C fibres (SSFCV) in the upper and lower limbs by simultaneously measuring the sympathetic skin reflex (SSR) in two distant sites. Fifty healthy volunteers were studied. SSRs were recorded with standard surface electrodes applied to both proximal (axilla and crural line) and distal sites for each limb (hand and foot). The CV of the efferent branch of the SSR was calculated by dividing the difference in the latencies of the response from two recording sites by the distance between the sites (axilla-hand for upper limb; crural line-foot for lower limb). Day-to-day reproducibility and intra-individual variability of the SSFCV were calculated. For the upper limbs, the SSFCV in the axilla-hand tract was 2.0+/-0.3 m/sec (range 1.6-2.4 m/sec). For the lower limb, the SSFCV in the crural line-foot tract was 1.4+/-0.4 m/sec (range 1.2-1.6 m/sec). Mean intra-individual variability of the SSFCV for the upper and lower limbs was 0.11 and 0.09, respectively. The coefficient of variation of the SSFCV for the upper and lower limbs was 5.1% and 5.4%, respectively. Our data show that this simple and non-invasive method can reliably be used to measure the CV of the sympathetic sudomotor fibres, in suitable temperature conditions, and may be useful when investigating the physiological functions of peripheral nerves in patients with peripheral neuropathies.

Published
2002

2. Estimation of the conduction velocity of sympathetic sudomotor C fibres in healthy subjects: study of sympathetic skin reflex.

Author

Parisi L, Rossi P, Valente G, Fattapposta F, Mellina V, Martini A, Pierelli F, and Serrao M

Subjects
Action Potentials physiology, Aged, Arm innervation, Arm physiology, Electromyography, Female, Humans, Leg innervation, Leg physiology, Male, Middle Aged, Skin innervation, Sympathetic Nervous System cytology, Galvanic Skin Response physiology, Nerve Fibers physiology, Neural Conduction physiology, Sympathetic Fibers, Postganglionic physiology, Sympathetic Nervous System physiology
Abstract

The aim of this study was to establish a simple method for estimating the conduction velocity (CV) of post-ganglionic sympathetic sudomotor C fibres (SSFCV) in the upper and lower limbs by simultaneously measuring the sympathetic skin reflex (SSR) in two distant sites. Fifty healthy volunteers were studied. SSRs were recorded with standard surface electrodes applied to both proximal (axilla and crural line) and distal sites for each limb (hand and foot). The CV of the efferent branch of the SSR was calculated by dividing the difference in the latencies of the response from two recording sites by the distance between the sites (axilla-hand for upper limb; crural line-foot for lower limb). Day-to-day reproducibility and intra-individual variability of the SSFCV were calculated. For the upper limbs, the SSFCV in the axilla-hand tract was 2.0+/-0.3 m/sec (range 1.6-2.4 m/sec). For the lower limb, the SSFCV in the crural line-foot tract was 1.4+/-0.4 m/sec (range 1.2-1.6 m/sec). Mean intra-individual variability of the SSFCV for the upper and lower limbs was 0.11 and 0.09, respectively. The coefficient of variation of the SSFCV for the upper and lower limbs was 5.1% and 5.4%, respectively. Our data show that this simple and non-invasive method can reliably be used to measure the CV of the sympathetic sudomotor fibres, in suitable temperature conditions, and may be useful when investigating the physiological functions of peripheral nerves in patients with peripheral neuropathies.

Published
2001

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