Results 41 to 50 of about 18,296 (263)

Strong earthquakes and geomagnetic jerks: a cause-effect relationship?

open access: yesAnnals of Geophysics, 1995
Secular variation of the geomagnetic field observed at the Earth's surface has been found to undergo impulsive accelerations Gerks) lasting less than a few years. In this paper the relations between jerks and the occurrence of strong earthquakes (Ms ?
L. Alfonsi, F. Florindo
doaj   +1 more source

Novel GLDC variants causing nonketotic hyperglycinemia in Chinese patients

open access: yesJournal of Laboratory Medicine, 2022
Glycine decarboxylase gene (GLDC) mutations cause nonketotic hyperglycinemia (NKH). Patients of NKH usually have heterogeneous phenotypes including respiratory failure, lethargy, myoclonic jerks, and hypotonia. The excessive glycine accumulation in brain
Zhao Xiangyue   +7 more
doaj   +1 more source

Peculiarities of the Knee-Jerk [PDF]

open access: yesThe Journal of Nervous and Mental Disease, 1893
n ...
openaire   +2 more sources

Natural Frequencies of Levodopa‐Induced Dyskinesia in Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Abnormal involuntary movements, known as dyskinesias, are common complications of levodopa treatment in patients with Parkinson's disease and can significantly impair quality of life. The underlying pathophysiology remains unclear, and current therapeutic options are limited.
Ioannis U. Isaias   +3 more
wiley   +1 more source

Spinal myoclonus: report of four cases

open access: yesArquivos de Neuro-Psiquiatria, 1993
Four cases of spinal myoclonus are described, three males and one female. The mean age was 51 years (28-75 years). The mean time between the onset of the myelopathy and the myoclonic jerks was 4.3 months (1-8 months).
James Pitágoras de Mattos   +3 more
doaj   +1 more source

Performance Improvement during Attitude Motion of a Vehicle Using Aerodynamic-Surface-Based Anti-Jerk Predictive Controller

open access: yesSensors, 2023
This study presents the effectiveness of an anti-jerk predictive controller (AJPC) based on active aerodynamic surfaces to handle upcoming road maneuvers and enhance vehicle ride quality by mitigating external jerks operating on the body of the vehicle ...
Ejaz Ahmad, Iljoong Youn
doaj   +1 more source

Detecting saccades with jerk

open access: yesVision Research, 1998
In studies of smooth eye movements, saccades are often detected and removed from eye movement records during analysis. A simple and effective method for saccade detection is described; the method uses jerk (the third derivative of eye position with respect to time).
openaire   +2 more sources

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park   +5 more
wiley   +1 more source

TENDON-JERKS AND ANAESTHESIA

open access: yesBritish Journal of Anaesthesia, 1955
TEXT-BOOKS of anaesthesia seldom mention the effect of general anaesthesia on the tendon-jerks, no doubt because this information has not been relevant in clinical anaesthesia. In the course of other work it became necessary to examine these effects. Tendon-jerks were accordingly tested in seventy-two patients subjected to anaesthesia.
openaire   +2 more sources

Global Rather Than Vertical‐Selective Saccadic Abnormalities in Progressive Supranuclear Palsy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To test whether vertical saccades are preferentially affected in Progressive Supranuclear Palsy (PSP). Methods PSP patients (n = 24) were compared to age‐matched controls (n = 94) and two degenerative groups (Alzheimer's disease, n = 20; Lewy body disease, n = 50).
Duy Duan Nguyen   +6 more
wiley   +1 more source

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