scholarly journals Factors Affecting and Adjustments for Sex Differences in Current Perception Threshold With Transcutaneous Electrical Stimulation in Healthy Subjects

2018 ◽  
Vol 22 (5) ◽  
pp. 573-579
Author(s):  
Shin‐ichiro Seno ◽  
Hideaki Shimazu ◽  
Eiki Kogure ◽  
Atsushi Watanabe ◽  
Hiroko Kobayashi
Keyword(s):  
Sex Differences ◽  
Electrical Stimulation ◽  
Healthy Subjects ◽  
Transcutaneous Electrical Stimulation ◽  
Perception Threshold ◽  
Factors Affecting ◽  
Current Perception Threshold

scholarly journals Analysis of the effect of fingertip size for sex differences in current perception thresholds with transcutaneous electrical stimulation in healthy subjects

2021 ◽  
Author(s):  
Shin-ichiro Seno ◽  
Hideaki Shimazu ◽  
Eiki Kogure ◽  
Atsushi Watanabe ◽  
Hiroko Kobayashi
Keyword(s):  
Sex Differences ◽  
Healthy Subjects ◽  
Index Finger ◽  
Ring Finger ◽  
Middle Finger ◽  
Perception Threshold ◽  
Left Hand ◽  
Current Perception Threshold ◽  
Males And Females ◽  
Little Finger

Abstract Objective This study aimed to measure the current perception threshold (CPT) of five fingertips of the left hand in healthy subjects and analyze whether sex differences in perception thresholds are suppressed when adjusting for fingertip size among males and females. Results For fingertips from the thumb to the little finger, the males’ CPT values were 1.03, 0.83, 0.86, 0.86, and 0.88 mA; the females’ results were 0.63, 0.55, 0.54, 0.51, and 0.50 mA. The CPTs were higher in males than in females for every fingertip. Upon adjusting for fingertip length, the log-transformed CPT values were found to have sex differences, except for the index finger: thumb, t(20.05) = 3.493, p = 0.002; middle finger, U(30) = 44.50, p = 0.005; ring finger, t(30) = 55.50, p = 0.018; little finger, U(30) = 30.00, p = 0.001. Similarly, the CPT values, transformed into log values when adjusting for the fingertip area, were found to have sex differences for three fingertips: thumb, t(18) = 2.649, p = 0.016; middle finger, U(20) = 12.00, p = 0.004; ring finger, t(18) = 2.206, p = 0.041. According to this study, sex differences in CPTs were not completely abolished by adjusting for fingertip length or area.

scholarly journals Current perception threshold and reaction time in the assessment of sensory peripheral nerve fibers through sinusoidal electrical stimulation at different frequencies

2013 ◽  
Vol 29 (3) ◽  
pp. 278-285 ◽  
Author(s):  
Henrique Resende Martins ◽  
Renato Zanetti ◽  
Clarissa Cardoso dos Santos ◽  
Gilberto Mastrocola Manzano ◽  
Carlos Julio Tierra-Criollo
Keyword(s):  
Electrical Stimulation ◽  
Reaction Time ◽  
Peripheral Nerve ◽  
Nerve Fibers ◽  
Perception Threshold ◽  
Current Perception Threshold

Transcutaneous electrical stimulation applied to the infratrochlear nerve induces a homatropine-resistant miosis in humans

1990 ◽  
Vol 78 (5) ◽  
pp. 457-462 ◽  
Author(s):  
B. M. Fusco ◽  
M. Alessandri ◽  
V. Campagnolo ◽  
M. Fanciullacci
Keyword(s):  
Electrical Stimulation ◽  
High Intensity ◽  
Healthy Subjects ◽  
Time Course ◽  
Contralateral Side ◽  
Pupillary Response ◽  
Transcutaneous Electrical Stimulation ◽  
Antidromic Activation ◽  
Light Reflex ◽  
Low Intensity

1. Both high- and low-intensity transcutaneous electrical stimuli were applied to the emergence of the infratrochlear nerve in 18 healthy subjects. The effect on the size of the homolateral pupil was investigated. The width of the pupil was also measured when high-intensity transcutaneous electrical stimulation was applied to the contralateral side. 2. The high-intensity pulse resulted in constriction of the pupil when the stimulation was homolateral. The miosis was slow in onset (120 s latency) and long-lasting (80 s). No pupillary changes were detected after either ipsilateral low-intensity or contralateral high-intensity stimuli. 3. In 11 healthy subjects, the pupillary response to transcutaneous electrical stimulation was evaluated during iris parasympathetic blockade induced by homatropine eyedrops. The disappearance of the light reflex due to homatropine was considered an index of the parasympathetic blockade. Afterwards, a high-intensity pulse was transcutaneously delivered to the emergence of the infratrochlear nerve and the ipsilateral pupil size was measured. 4. A reduction in the pupillary size followed the electrical stimulation, still under the effect of homatropine which abolished the light reflex. The time course of this pupillary constriction was similar to that seen without the influence of homatropine. 5. The findings suggest that homolateral miosis, observed after unilateral high-intensity stimulation of the infratrochlear nerve, does not stem from cholinergic activation. It has been suggested that miosis induced by transcutaneous electrical stimulation may be due to an antidromic activation of the iris sensory fibres.

scholarly journals Percutaneous versus Transcutaneous Electrical Stimulation of the Posterior Tibial Nerve in Idiopathic Overactive Bladder Syndrome with Urinary Incontinence in Adults: A Systematic Review

Healthcare ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 879
Author(s):  
Aida Agost-González ◽  
Isabel Escobio-Prieto ◽  
Azahara M. Pareja-Leal ◽  
María Jesús Casuso-Holgado ◽  
María Blanco-Diaz ◽  
...  
Keyword(s):  
Systematic Review ◽  
Urinary Incontinence ◽  
Electrical Stimulation ◽  
Overactive Bladder ◽  
Tibial Nerve ◽  
Scientific Evidence ◽  
Transcutaneous Electrical Stimulation ◽  
Posterior Tibial Nerve ◽  
Posterior Tibial

Background: Percutaneous electrical stimulation and transcutaneous electrical stimulation (PTNS and TTNS) of the posterior tibial nerve are internationally recognized treatment methods that offer advantages in terms of treating patients with overactive bladder (OAB) who present with urinary incontinence (UI). This article aims to analyze the scientific evidence for the treatment of OAB with UI in adults using PTNS versus TTNS procedures in the posterior tibial nerve. Methods: A systematic review was conducted, between February and May 2021 in the Web of Science and Scopus databases, in accordance with the PRISMA recommendations. Results: The research identified 259 studies, 130 of which were selected and analyzed, with only 19 used according to the inclusion requirements established. The greatest effectiveness, in reducing UI and in other parameters of daily voiding and quality of life, was obtained by combining both techniques with other treatments, pharmacological treatments, or exercise. Conclusions: TTNS has advantages over PTNS as it is more comfortable for the patient even though there is equality of both therapies in the outcome variables. More research studies are necessary in order to obtain clear scientific evidence.

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