Comparison of the Nerve Conduction Parameters in Proximally and Distally Located Muscles Innervated by the Bundles of Median and Ulnar Nerves.

Objective: The aim of this study was to investigate and compare the conduction parameters of nerve bundles of median and ulnar nerves that innervate proximal and distal muscles.

Subjects And Methods: Thirty male and 30 female healthy volunteers between 18 and 70 years of age were enrolled in the study. The conduction parameters were recorded from the proximally located flexor carpi ulnaris, pronator teres and the flexor carpi radialis muscles to the distally located abductor digiti minimi and abductor pollicis brevis muscles for the ulnar and median nerves.

Ocular pulse amplitude and retina nerve fiber layer thickness in migraine patients without aura.

Background: To evaluate the ocular pulse amplitude (OPA), the posterior pole asymmetry analysis (PPAA), the peripapillary retinal nerve fiber layer (RNFL) thickness, the ganglion cell layer (GCL) thickness, macular thickness and visual field testing in migraine patients without aura.

Methods: In this prospective, cross-sectional and comparative study 38 migraine patients and 44 age and sex matched controls were included. OPA was measured by dynamic contour tonometry (DCT), PPAA, RNFL, GCL and macular thickness were measured by Heidelberg Spectral Domain Optical Coherence Tomography (SD-OCT) and standard perimetry was performed using the Humphrey automated field analyzer.

Hemifacial spasm and postural abnormalities; clinical and posturographical analyses.

Hemifacial spasm (HFS) is defined as an involuntary, irregular clonic, or tonic movement of muscles innervated by the ipsilateral seventh cranial nerve. It is reported that the coexistence of non-motor- and motor-related symptoms can be seen in patients with HFS. Postural disturbances were investigated in some movement disorders; however, postural abnormalities due to HFS had not been reported before.

Benign-onset acute disseminated encephalomyelitis: a report on two cases.

The signs and symptoms of acute disseminated encephalomyelitis are heterogeneous and dependent on the location and severity of the inflammatory process. The meningoencephalitic presentation may include meningism, impaired consciousness (occasionally leading to coma), seizures and confusion, or behavioral disturbances. Multifocal neurological features include a combination of optic neuritis, visual field defects, cranial neuropathy, sensorimotor impairment, ataxia, aphasia, and involuntary movements.

ASCO classification in clinical practice.

ASCO (Atherosclerosis, Small vessel disease, Cardiac source, Other cause) is a new of classification of ischemic cerebrovascular diseases. This classification categorizes the data of the patients according to all underlying diseases and allows the clinician to grade the severity of cause (Each of the four phenotypes can be graded 1, 2, or 3). It is suggested to use ASCO classification in large epidemiologic studies but this classification may be used in daily practice.

Effect of hyperglycemia on conduction parameters of tibial nerve's fibers to different muscles: A rat model.

Introduction: Routine conduction studies reflect the summation of all nerve fibers in a peripheral nerve. Nerve fiber groups to distal, small muscles have smaller diameters than the ones to large proximal muscles. There may be minimal differences between the diameters of nerve fiber groups innervating different muscles; even they are all same type of fibers.

Nasopharyngeal carcinoma presenting with horner syndrome and carotid-sinus syncope.

Introduction: Nasopharyngeal carcinoma can present with different neurological signs and findings. In this paper, we report a patient presenting with Horner syndrome and syncopal episodes who was finally diagnosed with nasopharyngeal carcinoma.

Case Report: A 56-year-old man presented with a history of slowly progressive right upper-eyelid droop for the last 1.

Deep brain stimulation of the pedunculopontine nucleus in a patient with freezing of gait.

Case Presentation: A 54-year-old male patient presenting probable multiple system atrophy with predominant parkinsonism who underwent bilateral deep brain stimulation (DBS) of the pedunculopontine nucleus (PPN) is presented. The patient had dominant freezing of gait (FOG), levodopa-resistant bradykinesia, and autonomic disturbances, but with a good cognitive condition.

Methods: The patient underwent bilateral DBS of the PPN, which ended with modest benefits.

Conduction in ulnar nerve bundles that innervate the proximal and distal muscles: a clinical trial.

Background: This study aims to investigate and compare the conduction parameters of nerve bundles in the ulnar nerve that innervates the forearm muscles and hand muscles; routine electromyography study merely evaluates the nerve segment of distal (hand) muscles.

Methods: An electrophysiological evaluation, consisting of velocities, amplitudes, and durations of ulnar nerve bundles to 2 forearm muscles and the hypothenar muscles was performed on the same humeral segment.

Results: The velocities and durations of the compound muscle action potential (CMAP) of the ulnar nerve bundle to the proximal muscles were greater than to distal muscles, but the amplitudes were smaller.

Comparison of conduction velocities of nerve fibers to smaller and larger muscles in rats.

The aim of this study was to compare conduction velocities of motor fibers to smaller and larger muscles and to investigate the advantages and disadvantages of recordings from the gastrocnemius muscle with surface electrodes over the recordings from small foot muscles (interosseous muscles) with needle electrodes in rats. Surface and needle recordings are suitable in measuring the motor conduction velocity of the sciatic (tibial) nerve. It should be noted that the motor velocity measured from the gastrocnemius muscle is higher than the motor velocity elicited from small foot muscles.