The Importance of Neurophysiological Tests for the Localization of the Targets in Stereotaxic Neurosurgery

2015 ◽  
pp. 355-386 ◽  
Author(s):  
F. Marossero
Keyword(s):  
Neurophysiological Tests

scholarly journals Assessment of the Electromagnetic Field Exposure during the Use of Portable Radios in the Context of Potential Health Effects

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6276
Author(s):  
Jarosław Kieliszek ◽  
Joanna Wyszkowska ◽  
Jaromir Sobiech ◽  
Robert Puta
Keyword(s):  
Electromagnetic Field ◽  
Health Effects ◽  
Computer Simulations ◽  
Thermal Effects ◽  
The Body ◽  
Control Group ◽  
Field Exposure ◽  
Potential Health ◽  
Portable Radio ◽  
Neurophysiological Tests

The paper presents research on the electromagnetic hazards related to the flow of electric currents throughout the bodies of employees using portable radios. The values often exceed established limits, which may lead to potential dysfunctions of the body and affect the safety of performed professional duties. The measurements of the electric field (E-field) distribution of a typical commercial portable radio, the limb contact current calculations, and the computer simulations determining a specific absorption rate (SAR) were supplemented with pilot neurophysiological tests. The assessment indicated a large spatial variability of the E-field strength around the devices. The head of the operator and the hand holding the radio were often in the electromagnetic field (EMF), which exceeded the established limits. The calculated SAR values ranged within the permitted limits. The conducted neurophysiological tests showed no effects of EMF exposure in comparison to the control group. The assessment of exposure to the EMF using a portable radio is initially performed by analyzing external measures: both computer simulations and measurements of workers’ limb currents. The SAR values exclude thermal effects; however, they do not eliminate potential neuromuscular effects. More neurophysiological tests are needed to obtain a broader picture of possible health effects.

Evaluation and Proposal for Optimization of Neurophysiological Tests In Migraine: Part 2—Neuroimaging and The Nitroglycerin Test

Cephalalgia ◽  
2007 ◽  
Vol 27 (12) ◽  
pp. 1339-1359 ◽  
Author(s):  
D Magis ◽  
L Bendtsen ◽  
PJ Goadsby ◽  
A May ◽  
M Sánchez del Rio ◽  
...  
Keyword(s):  
Task Force ◽  
Brain Perfusion ◽  
Companion Paper ◽  
Voxel Based Morphometry ◽  
Functional Magnetic Resonance ◽  
Research Protocols ◽  
Neurophysiological Tests ◽  
Positron Emission ◽  
Therapeutic Research ◽  
Electrophysiological Methods

Neuroimaging methods have been widely used in headache and migraine research. They have provided invaluable information on brain perfusion, metabolism and structure during and outside of migraine attacks, contributing to an improved understanding of the pathophysiology of the disorder. Human models of migraine attacks are indispensable tools in pathophysiological and therapeutic research. This review of neuroimaging methods and the attack-provoking nitroglycerin test is part an initiative by a task force within the EUROHEAD project (EU Strep LSHM-CT-2004-5044837-Workpackage 9) with the objective of critically evaluating neurophysiological tests used in migraine. The first part, presented in a companion paper, is devoted to electrophysiological methods, this second part to neuroimaging methods such as functional magnetic resonance imaging, positron emission tomography and voxel-based morphometry, as well as the nitroglycerin test. For each of these methods, we summarize the results, analyse the methodological limitations and propose recommendations for improved methodology and standardization of research protocols.

Neurodiagnostic tools

2012 ◽  
Author(s):  
Rob Forsyth ◽  
Richard Newton
Keyword(s):  
Neuropsychological Testing ◽  
Sensory Pathways ◽  
Neurophysiological Tests ◽  
Brainstem Anatomy

Principles of investigation 52Principles of neuroradiology 54Neuroradiological anatomy 64Brainstem anatomy 69Principles of neurophysiology 70Peripheral neurophysiological tests 76Neurophysiological testing of central sensory pathways 82Specialist investigations 85Practical procedures 94Neuropsychological testing 99This subject tends to bring some people out in a rash (...

P70-T Results of neurophysiological tests in a child with pandysautonomia

2019 ◽  
Vol 130 (7) ◽  
pp. e59
Author(s):  
Aleksandra Gergont ◽  
Sławomir Kroczka ◽  
Marek Kaciński
Keyword(s):  
Neurophysiological Tests

Diagnostic Value of Neurophysiological Tests in the Diagnosis of Brain Death - Do We Need Changes in National Guidelines?

2009 ◽  
Vol 20 (3-4) ◽  
Author(s):  
S. Djuric ◽  
V. Djuric ◽  
M. Zivkovic ◽  
V. Milosevic ◽  
J. Stamenovic ◽  
...  
Keyword(s):  
Brain Death ◽  
Diagnostic Value ◽  
National Guidelines ◽  
Neurophysiological Tests

Effectiveness mechanism of chlomipramine by neurophysiological tests in subjects with true premature ejaculation

Andrologia ◽  
2009 ◽  
Vol 23 (1) ◽  
pp. 45-47 ◽  
Author(s):  
G. M. Colpi ◽  
F. Fanciullacci ◽  
K. Aydos ◽  
C. Grugnetti
Keyword(s):  
Premature Ejaculation ◽  
Neurophysiological Tests

scholarly journals Upper Motor Neuron Signs in the Cervical Region of Patients With Flail Arm Syndrome

2021 ◽  
Vol 12 ◽  
Author(s):  
Yingsheng Xu ◽  
Junyi Chen ◽  
Shuo Zhang ◽  
Dongsheng Fan
Keyword(s):  
Motor Neuron ◽  
Amplitude Ratio ◽  
Lower Motor Neuron ◽  
Cervical Region ◽  
Quantitative Detection ◽  
Neurophysiological Tests ◽  
Tendon Reflex ◽  
Peking University ◽  
Reflex Testing

Objective: We investigated upper motor neuron (UMN) signs in the cervical region in a Chinese clinic-based cohort of patients with flail arm syndrome (FAS) by clinical examination and neurophysiological tests such as triple stimulation technique (TST) and pectoralis tendon reflex testing.Methods: A total of 130 consecutive FAS patients from Peking University Third Hospital underwent physical examination and neurophysiological tests at baseline and 3 months, 6 months, 9 months, and 12 months later. Pyramidal signs, pectoralis tendon reflex and TST results were evaluated to estimate the function of cervical spinal UMNs.Results: At the first visit, weakness of the bilateral proximal upper limbs was found in 99 patients, while weakness of a single proximal upper limb was found in 31 patients. There were 49 patients with tendon hyperreflexia, 42 patients with tendon hyporeflexia and 39 patients with tendon areflexia. All except 4 of the patients had brisk pectoralis tendon reflex. The UMN score of the cervical region was 1.7 ± 0.4, and the lower motor neuron score of that region was 3.5 ± 0.3. The TSTtest/TSTcontrol amplitude ratio was 65.7 ± 7.5%. The latency of quantitative detection of the pectoralis tendon reflex was 7.7 ± 1.2 ms. In the follow-up study, the UMN score and the TSTtest/TSTcontrol amplitude ratio decreased, while the lower motor neuron score increased, and the latency of quantitative detection of the pectoralis tendon reflex remained steady.Conclusion: Although the signs of cervical spinal UMN dysfunction in patients with FAS were often concealed by muscle atrophy in the progression of the disease, TST and pectoralis tendon reflex could reveal it.

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