Abstract:
:The mechanism underlying mirrored activity/movements in normal individuals is unknown. To investigate this, we studied 11 adults and 39 children who performed sequential finger-thumb opposition or repetitive index finger abduction. Surface electromyographic (EMG) activity recorded from the left and right first dorsal interosseous muscles (1DI) during unilateral sequential finger-thumb opposition (voluntarily activated muscle, 1DIvol) showed mirrored EMG activity (homologous muscle of the opposite hand, 1DImm) that decreased with increasing age. The time of onset of involuntary compared with voluntary EMG activity was variable but could start at the same time. A significant increase in E2 (transcortical component) size of the cutaneomuscular reflex recorded from the 1DImm indicated increased excitability of the motor cortex ipsilateral to the 1DIvol during active index finger abduction compared with the 1DIvol relaxed. Transcranial magnetic stimulation, using the Bistim technique, indicated that the transcallosal inhibitory pathway in children may not operate in the same way as in the adult. Cross-correlation analysis did not detect shared synaptic input to motoneuron pools innervating homologous left and right hand muscles. We conclude that the mirrored movements/activity observed in healthy adults and children are produced by simultaneous activation of crossed corticospinal pathways originating from both left and right motor cortices.
journal_name
Ann Neuroljournal_title
Annals of neurologyauthors
Mayston MJ,Harrison LM,Stephens JAdoi
10.1002/1531-8249(199905)45:5<583::aid-ana6>3.0.cokeywords:
subject
Has Abstractpub_date
1999-05-01 00:00:00pages
583-94issue
5eissn
0364-5134issn
1531-8249journal_volume
45pub_type
杂志文章abstract::The tyrosine kinase receptor RON and its ligand, macrophage stimulating protein (MSP), exert inhibitory effects on systemic innate immunity, but their CNS expression and impact on human neuroinflammatory diseases are unknown were RON and MSP present in human brain perivascular macrophages and microglia, but RON mRNA a...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.20502
更新日期:2005-06-01 00:00:00
abstract::A dinucleotide repeat polymorphism in a tau intron was identified and used in a case-control study to analyze the genetic association of tau with several neurodegenerative diseases with tau pathology. Subjects with the homozygous tau AO alleles were excessively represented in the progressive supranuclear palsy (PSP) g...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410410222
更新日期:1997-02-01 00:00:00
abstract::Alterations of nodal and paranodal axolemma of the rat sciatic nerve were investigated in antigalactocerebroside serum-induced demyelination. A ferric ion-ferrocyanide (FeFCN) stain that appears to stain the regions with a high sodium channel density in nerve fibers was applied. When acute conduction block was initiat...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410150611
更新日期:1984-06-01 00:00:00
abstract::The first electrophysiological study of the human lateral geniculate nucleus (LGN), optic radiation, striate, and extrastriate visual areas is presented in the context of presurgical evaluation of three epileptic patients (Patients 1, 2, and 3). Visual-evoked potentials to pattern reversal and face presentation were r...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.10403
更新日期:2003-01-01 00:00:00
abstract::Four guanidino compounds that have been found to be markedly increased in cerebrospinal fluid and brain tissue of uremic patients, namely, guanidine, methylguanidine, creatinine, and guanidinosuccinic acid, were applied to mouse spinal cord neurons in primary dissociated cell culture to evaluate their effects on posts...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410280505
更新日期:1990-11-01 00:00:00
abstract:OBJECTIVE:To examine changes in the response properties of meningeal nociceptors that might lead to migraine pain and examine endogenous processes that could play a role in mediating them using a clinically relevant model of migraine triggering, namely infusion of the nitric oxide (NO) donor nitroglycerin (NTG). METHO...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.23873
更新日期:2013-06-01 00:00:00
abstract::Although genome-wide association studies (GWAS) have proven remarkably effective at identifying reliably associated genetic variants, the biology underlying these discoveries is rarely immediately apparent and in most cases seems bound to require extensive fine mapping and functional analysis before it is revealed. In...
journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.23613
更新日期:2012-10-01 00:00:00
abstract:OBJECTIVE:Both animal and human data suggest that noradrenergic stimulation may enhance motor performance after brain damage. We conducted a placebo-controlled, double-blind and crossover design study to investigate the effects of noradrenergic stimulation on the cortical motor system in hemiparetic stroke patients. M...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.22237
更新日期:2011-02-01 00:00:00
abstract::A case-control study was performed to determine the possible roles of various environmental factors, prior illnesses, drug use, and personal habits in the development of Alzheimer's disease. Such information was collected from 40 patients with onset of dementia prior to age 70 and from 80 community control subjects ma...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410150406
更新日期:1984-04-01 00:00:00
abstract::Juvenile myoclonic epilepsy is a common type of idiopathic generalized epilepsy characterized by myoclonic, generalized tonic-clonic, and in 30% of patients, absence seizures. We studied a three-generation pedigree of 33 members, 10 of whom were clinically affected with juvenile myoclonic epilepsy or presented with su...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410390208
更新日期:1996-02-01 00:00:00
abstract:OBJECTIVE:To evaluate the analgesic effect of botulinum toxin type A (BTX-A) on patients with spinal cord injury-associated neuropathic pain. METHODS:The effect of BTX-A on 40 patients with spinal cord injury-associated neuropathic pain was investigated using a randomized, double-blind, placebo-controlled design. A 1-...
journal_title:Annals of neurology
pub_type: 杂志文章,随机对照试验
doi:10.1002/ana.24605
更新日期:2016-04-01 00:00:00
abstract:OBJECTIVE:Wide interindividual variability exists in response to tissue plasminogen activator (t-PA) treatment in the acute phase of ischemic stroke. We aimed to find genetic variations associated with hemorrhagic transformation (HT) and mortality rates after t-PA. We then generated a clinical-genetic model for predict...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.23664
更新日期:2012-11-01 00:00:00
abstract::Four hundred five children from the Helsinki area who were 1 month to 16 years old were treated for acute encephalitis at the Children's Hospital, University of Helsinki, from January 1968 through December 1987. Encephalitis occurred most commonly in children 1 to 1.9 years of age, among whom the incidence was 16.7 pe...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410290508
更新日期:1991-05-01 00:00:00
abstract:OBJECTIVE:Autosomal-dominant lateral temporal epilepsy (ADLTE) is a genetic focal epilepsy characterized by auditory symptoms. Two genes, LGI1 and RELN, encoding secreted proteins, are implicated in the etiology of ADLTE, but half of the affected families remain genetically unsolved, and the underlying molecular mechan...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.25167
更新日期:2018-03-01 00:00:00
abstract::The etiology of neurodegenerative diseases remains enigmatic; however, evidence for defects in energy metabolism, excitotoxicity, and for oxidative damage is increasingly compelling. It is likely that there is a complex interplay between these mechanisms. A defect in energy metabolism may lead to neuronal depolarizati...
journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.410380304
更新日期:1995-09-01 00:00:00
abstract:OBJECTIVE:Gut microbiome alterations in Parkinson disease (PD) have been reported repeatedly, but their functional relevance remains unclear. Fecal metabolomics, which provide a functional readout of microbial activity, have scarcely been investigated. We investigated fecal microbiome and metabolome alterations in PD, ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.25982
更新日期:2020-12-03 00:00:00
abstract::A number of reports have suggested an increasing incidence of primary brain tumors, especially malignant astrocytomas, in the elderly population. To investigate this issue, we analyzed the incidence and temporal trends of primary intracranial neoplasms diagnosed in the population of Rochester, Minnesota, over the 40 y...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410370113
更新日期:1995-01-01 00:00:00
abstract::Two family members with hereditary pressure-sensitive neuropathy are reported. One patient presented atypically with acute brachial plexus neuropathy following transaxillary removal of the first rib. Electrophysiological studies showed slowing of motor nerve conduction in clinically affected and unaffected nerves. In ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410080613
更新日期:1980-12-01 00:00:00
abstract::This report describes, for what may be only the second time, a ruptured miliary aneurysm within a cerebral hemorrhage. The report is unique in that the aneurysm has arisen at the site of a dissection within the wall of an arteriole at a site of fibrinoid necrosis. The case not only is a unique illustration of this pat...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.10664
更新日期:2003-09-01 00:00:00
abstract::Multiple sclerosis (MS) has been associated with HLA-DR2 for more than 20 years, and a large number of studies have addressed the relation between MS and the HLA class II genes, which are our major immune-response genes. This has produced a complex and confusing picture that is difficult to interpret. With the advent ...
journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.410360706
更新日期:1994-01-01 00:00:00
abstract::Three-dimensional (volume) magnetic resonance angiography is a noninvasive technique that images the intracranial and cervical arterial vasculature without contrast agents. Twenty-four children with strokes had combined parenchymal magnetic resonance imaging and magnetic resonance angiography 1 day to 4 years after ac...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410290603
更新日期:1991-06-01 00:00:00
abstract::We describe a 33-year-old homosexual man with a steroid-responsive, remitting and relapsing leukoencephalopathy associated with recent human immunodeficiency virus type 1 (HIV-1) seroconversion. Biopsy of a parieto-occipital lesion revealed demyelination and astrogliosis with focal necrosis. Detailed investigations de...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410310107
更新日期:1992-01-01 00:00:00
abstract:OBJECTIVE:Serum urate levels have been associated with risk for and progression of Parkinson's disease (PD). Urate-related compounds are therapeutic candidates in neuroprotective efforts to slow PD progression. A urate-elevating agent is currently under investigation as a potential disease-modifying strategy in people ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.24504
更新日期:2015-11-01 00:00:00
abstract::In a double-blind crossover study in which patients received placebo or active drug for varying periods, we evaluated the ability of guanidine hydrochloride (20 to 35 mg/kg per day perorally) to improve the rate of recovery in patients with moderate or severe botulism, type A, intoxication. Among 14 patients who recei...
journal_title:Annals of neurology
pub_type: 临床试验,杂志文章
doi:10.1002/ana.410060117
更新日期:1979-07-01 00:00:00
abstract::A chronic remitting-relapsing form of experimental allergic encephalomyelitis (EAE) has been produced in monkeys sensitized to homologous myelin basic protein in Freund's complete adjuvants by the technique of suboptimal treatment after the onset of disease. Not only does the clinical course resemble that of human mul...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410240608
更新日期:1988-12-01 00:00:00
abstract::A patient with generalized convulsions noted that seizures were reliably precipitated by mental arithmetic. The interictal electroencephalogram revealed only a mild, diffuse, nonspecific disturbance, but bursts of generalized epileptiform activity with no obvious clinical expression accompanied efforts at mental arith...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410110609
更新日期:1982-06-01 00:00:00
abstract::Direct DNA tests for mutations in neurogenetic disorders are establishing a new era in diagnostic neurology. These highly accurate and specific tests will greatly improve diagnosis and genetic counseling, lead to more accurate assessment of prognosis, and reduce the cost of diagnostic evaluations. However, the use and...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410380204
更新日期:1995-08-01 00:00:00
abstract:OBJECTIVE:The primary imaging modalities used to select patients for endovascular thrombectomy (EVT) are noncontrast computed tomography (CT) and CT perfusion (CTP). However, their relative utility is uncertain. We prospectively assessed CT and CTP concordance/discordance and correlated the imaging profiles on both wit...
journal_title:Annals of neurology
pub_type: 杂志文章,多中心研究
doi:10.1002/ana.25669
更新日期:2020-03-01 00:00:00
abstract:OBJECTIVE:Visual Evoked Potentials (VEPs) following optic neuritis (ON) remain chronically prolonged, although standard visual tests indicate full recovery. We hypothesized that dynamic visual processes, such as motion perception, may be more vulnerable to slowed conduction in the optic nerve, and consequently be bette...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.22692
更新日期:2012-04-01 00:00:00
abstract::We report the clinical features of 12 patients with drop attacks associated with Meniere's syndrome. Each described a sensation of being pushed, thrown, or knocked to the ground or a sudden illusion of movement of the environment that led to a fall. These episodes were not accompanied by symptoms of their typical atta...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410280314
更新日期:1990-09-01 00:00:00