نتایج جستجو برای: tremor burst
تعداد نتایج: 41206 فیلتر نتایج به سال:
BACKGROUND Action tremor is the hallmark feature of essential tremor (ET). While the tremor typically is mildly asymmetric, in some patients, it is markedly asymmetric. There are few data on factors that influence this asymmetry. ET is also a highly familial disease. Whether the tremor asymmetry profile (i.e., differential expression of tremor in each arm in a given patient) is similar across f...
BACKGROUND Orthostatic tremor is one of the few tremor conditions requiring an electromyogram for definitive diagnosis since leg tremor might not be visible to the naked eye. PHENOMENOLOGY SHOWN An iOS application (iSeismometer, ObjectGraph LLC, New York) using an Apple iPhone 5 (Cupertino, CA, USA) inserted into the patient's sock detected a tremor with a frequency of 16.4 Hz on both legs. ...
BACKGROUND Orthostatic tremor is an uncommon disorder manifest by high frequency, low amplitude leg tremor upon weight bearing. Treatment with oral tremor agents is inconsistent and usually not satisfactory. METHODS We implanted bilateral ventralis intermedius nuclei deep brain stimulators into an 82-year-old male with refractory orthostatic tremor. RESULTS The patient had a marked subjecti...
Introduction Tremor is defined as “a rhythmical involuntary oscillation of a body part”. The main characteristic symptom of the patients with Parkinson disease (PD) and Essential tremor (ET) is tremor. Cells in the thalamic ventral nuclear group fire at frequencies close to that of tremor for patients with PD and ET (Lenz et al., 1994). Tremor can be abolished by localized lesion of the nucleus...
A 64-year-old female patient with spinocerebellar ataxia type 6 was referred to our department for pancreatic cancer and anesthetized with volatile anesthesia combined with epidural anesthesia for pancreaticoduodenectomy. No complications arose during surgery. On postoperative day 4, a head tremor was noticed at the time of mobilization. The tremor was a postural and “no-no” tremor rather than ...
OBJECTIVE To study tremor in patients with X-linked recessive spinobulbar muscular atrophy or Kennedy's disease. METHODS Ten patients (from 7 families) with a genetic diagnosis of Kennedy's disease were screened for the presence of tremor using a standardized clinical protocol and followed up at a neurology outpatient clinic. All index patients were genotyped and showed an expanded allele in ...
Tremor is an involuntary, approximately rhythmic, oscillatory movement produced when muscles repeatedly contract or relax. It has relatively fixed frequency and amplitude. To overcome the occurrence of tremor which is the root cause for human imprecision during surgical procedure particularly in case of microsurgery, a system is required to measure the hand tremor at the surgeon handle and to r...
BACKGROUND AND METHODS In order to obtain further information on the pathophysiology of functional tremor, we assessed tactile discrimination threshold and proprioceptive temporal discrimination motor threshold values in 11 patients with functional tremor, 11 age- and sex-matched patients with essential tremor and 13 healthy controls. RESULTS Tactile discrimination threshold in both the right...
OBJECTIVES To evaluate the efficacy of deep brain stimulation (DBS) in the treatment of tremor resulting from acquired brain injury (ABI). METHODS A series of eight consecutive patients with post-ABI tremor were treated with DBS of the ventro-oralis posterior (VOP)/zona incerta (ZI) region, and subsequently underwent blinded assessments using Bain's tremor severity scale. RESULTS VOP/ZI DBS...
BACKGROUND Postural tremor can sometimes occur in spinocerebellar ataxias (SCAs). However, the prevalence and clinical characteristics of postural tremor in SCAs are poorly understood, and whether SCA patients with postural tremor have different ataxia progression is not known. METHODS We studied postural tremor in 315 patients with SCA1, 2, 3, and 6 recruited from the Clinical Research Conso...
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