Evaluation of Ocular electrophysiological tests in acne patients treated with isotretinoin

2018 ◽  
Vol 10 (03) ◽  
Keyword(s):  
Electrophysiological Tests

scholarly journals Speech Processing Disorder in Neural Hearing Loss

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Joseph P. Pillion
Keyword(s):  
Speech Processing ◽  
Auditory Processing ◽  
Neurological Disorders ◽  
Auditory Neuropathy ◽  
Central Auditory Processing ◽  
Temporal Lobes ◽  
Electrophysiological Tests ◽  
Bilateral Lesions ◽  
Clinical Conditions ◽  
Inferior Colliculi

Deficits in central auditory processing may occur in a variety of clinical conditions including traumatic brain injury, neurodegenerative disease, auditory neuropathy/dyssynchrony syndrome, neurological disorders associated with aging, and aphasia. Deficits in central auditory processing of a more subtle nature have also been studied extensively in neurodevelopmental disorders in children with learning disabilities, ADD, and developmental language disorders. Illustrative cases are reviewed demonstrating the use of an audiological test battery in patients with auditory neuropathy/dyssynchrony syndrome, bilateral lesions to the inferior colliculi, and bilateral lesions to the temporal lobes. Electrophysiological tests of auditory function were utilized to define the locus of dysfunction at neural levels ranging from the auditory nerve, midbrain, and cortical levels.

scholarly journals Neuropathic pain post-COVID-19: a case report

2021 ◽  
Vol 14 (7) ◽  
pp. e243459
Author(s):  
Matthew McWilliam ◽  
Michael Samuel ◽  
Fadi Hasan Alkufri
Keyword(s):  
Neuropathic Pain ◽  
Case Report ◽  
Hospital Admission ◽  
Skin Biopsy ◽  
Neurological Examination ◽  
Autonomic Failure ◽  
Whole Body ◽  
Shortness Of Breath ◽  
Burning Pain ◽  
Electrophysiological Tests

A 61-year-old man with no significant medical history developed fever, headache and mild shortness of breath. He tested positive for SARS-CoV-2 and self-isolated at home, not requiring hospital admission. One week after testing positive, he developed acute severe burning pain affecting his whole body, subsequently localised distally in the limbs. There was no ataxia or autonomic failure. Neurological examination was unremarkable. Electrophysiological tests were unremarkable. Skin biopsy, lumbar puncture, enhanced MRI of the brachial plexus and MRI of the neuroaxis were normal. His pain was inadequately controlled with pregabalin but improved while on a weaning regimen of steroids. This case highlights the variety of possible symptoms associated with SARS-CoV-2 infection.

The Sensitivity and Specificity of Tests for Carpal Tunnel Syndrome Vary with the Comparison Subjects

1998 ◽  
Vol 23 (2) ◽  
pp. 151-155 ◽  
Author(s):  
F. GERR ◽  
R. LETZ
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Diagnostic Tests ◽  
Normal Subjects ◽  
Clinical Test ◽  
Test Results ◽  
Electrophysiological Tests ◽  
Tunnel Syndrome ◽  
Electrophysiological Test ◽  
Hand Symptoms

The performance of a variety of common office-based clinical tests for detection of carpal tunnel syndrome (CTS) was assessed in 119 subjects with and without electrophysiological evidence of CTS. Symptoms compatible with CTS and electrophysiological tests positive for median mononeuropathy at the wrist were observed in 57 hands, symptoms compatible with CTS and normal electrophysiological test results were observed in 58 hands, and no symptoms compatible with CTS and normal electrophysiological test results were observed in 123 hands. For all the diagnostic tests studied, the proportion of subjects who had a false positive clinical test result was much higher in the electrophysiologically normal subjects who had CTS compatible hand symptoms than in the electrophysiologically normal subjects who were asymptomatic. These results suggest that many studies that have evaluated diagnostic tests for CTS have produced falsely optimistic estimates of the test’s performance because of their use of asymptomatic comparison subjects.

The Early Diagnosis of Multiple Sclerosis

1980 ◽  
Vol 25 (1) ◽  
pp. 58-62
Author(s):  
B. Ashworth
Keyword(s):  
Multiple Sclerosis ◽  
Cerebrospinal Fluid ◽  
Early Diagnosis ◽  
Optic Neuritis ◽  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Spastic Paraparesis ◽  
Psychological Disorder ◽  
Electrophysiological Tests ◽  
Visual Evoked

An outline of modern views on the aetiology of multiple sclerosis is followed by a discussion of diagnosis. Examination of the cerebrospinal fluid, visual evoked potentials, and other electrophysiological tests are considered. The special problems of optic neuritis, spastic paraparesis, and psychological disorder receive more detailed attention. It is concluded that while the supplementary tests are valuable the diagnosis remains essentially clinical.

Stiff Person Syndrome

2013 ◽  
Author(s):  
Aaron E. Miller ◽  
Teresa M. DeAngelis
Keyword(s):  
Diagnostic Criteria ◽  
Clinical Features ◽  
Therapeutic Options ◽  
Stiff Person Syndrome ◽  
Muscular Rigidity ◽  
Unexplained Pain ◽  
Electrophysiological Tests

Stiff person syndrome is an important autoimmune mediated disorder to consider in patients with unexplained pain and muscular rigidity. We review the proposed diagnostic criteria, common clinical features, and important serologic and electrophysiological tests to aid in diagnosis as well as medical and rehabilitative therapeutic options. In addition, we discuss the identification and management of possible paraneoplastic presentations.

scholarly journals Chemical signal is in the blend: bases of plant-pollinator encounter in a highly specialized interaction

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Magali Proffit ◽  
Benoit Lapeyre ◽  
Bruno Buatois ◽  
Xiaoxia Deng ◽  
Pierre Arnal ◽  
...  
Keyword(s):  
Pollinator Attraction ◽  
Plant Insect Interactions ◽  
Electrophysiological Tests ◽  
Plant Recognition ◽  
Pollination Mutualism ◽  
Volatile Organic ◽  
Small Change ◽  
Insect Interactions ◽  
Behavioural Tests ◽  
Plant Pollinator

Abstract In several highly specialized plant-insect interactions, scent-mediated specificity of pollinator attraction is directed by the emission and detection of volatile organic compounds (VOCs). Although some plants engaged in such interactions emit singular compounds, others emit mixtures of VOCs commonly emitted by plants. We investigated the chemical ecological bases of host plant recognition in the nursery pollination mutualism between the dioecious Ficus carica and its specific pollinator Blastophaga psenes. Using Y-tube olfactometer tests, we show that B. psenes females are attracted by VOCs of receptive figs of both sexes and do not exhibit preference for VOCs of either male or female figs. Electrophysiological tests and chemical analysis revealed that of all the VOCs emitted by receptive figs, only five were found to be active on female antennae. Behavioural tests show that, in contrast to VOCs presented alone, only a blend with a particular proportion of four of these VOCs is as attractive as the odour of receptive figs, and that if there is a very small change in this blend proportion, the pollinator is no longer attracted. This study revealed that in highly specialized mutualistic interactions specificity could be mediated by a particular blend of common compounds emitted by plants.

Use of an intact sensory nerve to bridge a motor nerve defect: an experimental study

2006 ◽  
Vol 104 (5) ◽  
pp. 804-809 ◽  
Author(s):  
Serçin Tirelioğlu ◽  
Serhat Özbek ◽  
Mesut Özcan ◽  
M. Ayberk Kurt ◽  
Bezhat Noyan
Keyword(s):  
Experimental Study ◽  
Distal Part ◽  
Motor Nerve ◽  
Nerve Repair ◽  
Sensory Nerve ◽  
Nerve Grafting ◽  
Nerve Stump ◽  
Electrophysiological Tests ◽  
Experimental Use ◽  
Mixed Nerve

Object End-to-side neurorrhaphy has recently became popular for peripheral nerve repair. Although this method is mainly indicated in nerve defects in which there is an absent proximal nerve stump, bridging a motor nerve defect by coapting the proximal and distal ends of the defect to a neighboring mixed nerve in an end-to-side fashion has been another experimental use of this method. In this situation, however, the source of the regenerating axons is unclear because the axons in both the proximal end of the defect and the bridging intact nerve have the capacity for regeneration. The goal of this study was to identify the source of the regenerating axons. Methods In this experimental study, the authors used a sensory nerve to bridge a motor nerve defect so that they could elucidate the source of the regenerating motor axons in the distal part of the motor nerve. One advantage of using a sensory nerve was that it eradicated the risk of damaging another motor nerve. Tests used in the analysis included gait evaluation, electrophysiological tests, and histological assessment. Conclusions Results of this study showed that, in the rat model, a sensory nerve can be used to bridge a motor nerve defect, thereby eliminating the need for nerve grafting.

Sign in / Sign up

Export Citation Format

Share Document