Abstract:
:It has been known for some time that patients with Parkinson's disease (PD) have difficulty executing simultaneous motor acts, yet the pathophysiology underlying this impairment remains uncertain. We examined the possibility that these dual-task deficits stem from defective sensorimotor mechanisms producing interference between the motor programs underlying the two tasks. Patients with PD and normal control subjects were tested on their ability to maintain steady-state force with one hand while performing a force-reaction time task with the other hand. Although performance was worse on the dual-task than on the single-task condition for both subject groups, only the patients with PD demonstrated significant interference between the two tasks. The interference across tasks improved in 87% of the patients with PD when tested after treatment with carbidopa/levodopa (Sinemet). These findings support the contention that, in patients with PD, disturbances in the execution of simultaneous motor performance may be due to sensorimotor disinhibition.
journal_name
Ann Neuroljournal_title
Annals of neurologyauthors
Caligiuri MP,Heindel WC,Lohr JBdoi
10.1002/ana.410310110keywords:
subject
Has Abstractpub_date
1992-01-01 00:00:00pages
53-8issue
1eissn
0364-5134issn
1531-8249journal_volume
31pub_type
杂志文章abstract::The genetic analysis of simple Mendelian epilepsies remains a key strategy in advancing our understanding of epilepsy. In this article, we describe a new family epilepsy syndrome, partial epilepsy with pericentral spikes, which we map to chromosome 4p15. We distinguish it clinically, electrophysiologically, and geneti...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.10221
更新日期:2002-06-01 00:00:00
abstract::To examine the antiparkinsonian effects of blocking glycineB receptors, we designed a pilot study testing the potent and selective antagonist, PAMQX, in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-treated primates. PAMQX had no intrinsic effects but markedly potentiated the antiparkinsonian action of levodopa. In a d...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.20279
更新日期:2004-11-01 00:00:00
abstract:OBJECTIVE:Neuronal channelopathies cause brain disorders, including epilepsy, migraine, and ataxia. Despite the development of mouse models, pathophysiological mechanisms for these disorders remain uncertain. One particularly devastating channelopathy is Dravet syndrome (DS), a severe childhood epilepsy typically cause...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.23897
更新日期:2013-07-01 00:00:00
abstract::An artificial system is described in which anti-dinitrophenyl (DNP) antibody attaches to hapten-conjugated human brain tissue. Treatment of this material with acetic acid at pH 2.5 to 3.0 for 90 seconds followed by immediate neutralization results in dissociation of antibody from the hapten-conjugated brain. Less than...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410030507
更新日期:1978-05-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to investigate the role of CD8+ CD25+ FoxP3+ cells during the course of multiple sclerosis (MS). METHODS:Peripheral blood and cerebrospinal fluid (CSF) CD8+ T-cell clones (TCCs) recognizing autoreactive CD4+ T cells were isolated from 20 MS patients during exacerbations, 15 pa...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.21944
更新日期:2010-05-01 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::PINK1 was recently found to be associated with PARK6 as the causative gene. We performed mutation analysis in eight inbred families whose haplotypes link to the PARK6 region. We identified six pathogenic mutations (R246X, H271Q, E417G, L347P, and Q239X/R492X) in six unrelated families. All sites of mutations were nove...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.20251
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVE:Loss of function mutations in PINK1 typically lead to early onset Parkinson disease (PD). Zebrafish (Danio rerio) are emerging as a powerful new vertebrate model to study neurodegenerative diseases. We used a pink1 mutant (pink(-/-) ) zebrafish line with a premature stop mutation (Y431*) in the PINK1 kinase d...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.23999
更新日期:2013-12-01 00:00:00
abstract:OBJECTIVE:Determining if traumatic brain injury (TBI) and post-traumatic stress disorder (PTSD) are risk factors for Parkinson's disease (PD). This constitutes a research priority for the Veterans Administration (VA) with implications for screening policy and prevention. METHODS:Population-based, matched case-control ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.25726
更新日期:2020-07-01 00:00:00
abstract::A patient developed conjugate horizontal eye deviation to the side opposite a large frontal-perisylvian hemorrhage from a ruptured aneurysm. Autopsy examination confirmed the hemispheric locus of the hemorrhage and failed to disclose any lesion of the brainstem or thalamus to explain the "wrong-way" eye deviation. ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410090115
更新日期:1981-01-01 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::Using two-color flow cytometric analysis, we studied peripheral blood lymphocyte subsets in 15 patients with human T-cell lymphotropic virus type I-associated myelopathy. The percentage of CD4+ 4B4+ cells (helper inducer T cell) was significantly increased in the patients with the myelopathy, compared with 16 healthy ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410260212
更新日期:1989-08-01 00:00:00
abstract:OBJECTIVE:Hemodynamic impairment in one hemisphere has been shown to trigger ipsilateral motor activation in the opposite hemisphere on functional imaging. We hypothesized that reversing the hypoperfusion would normalize the motor activation pattern. METHODS:We studied four patients with high-grade stenosis and impair...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.21554
更新日期:2009-02-01 00:00:00
abstract::Previous studies have indicated increased immunoreactivity of the endogenous opioid peptide beta-endorphin in the cerebrospinal fluid (CSF) of infants under 2 years of age with apnea. To assess the role of endogenous opioids in the pathogenesis of apnea in children, the effect of oral treatment with the opioid antagon...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410270112
更新日期:1990-01-01 00:00:00
abstract::Intraneural perineuriomas are benign peripheral nerve sheath tumors that cause progressive debilitating focal extremity weakness. The etiology of perineuriomas is largely unknown. We utilized whole exome sequencing, copy number algorithm evaluation, and high-resolution whole genome microarray to investigate for a gene...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.24854
更新日期:2017-02-01 00:00:00
abstract:OBJECTIVE:To assess risk factors associated with care for stroke symptoms. METHODS:Using data from the population-based national cohort study (REasons for Geographic And Racial Differences in Stroke) conducted January 25, 2003-February 28, 2007 (N = 23,664), we assessed care-seeking behavior among 3,668 participants w...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.21357
更新日期:2008-04-01 00:00:00
abstract:OBJECTIVE:Whether febrile status epilepticus (FSE) produces hippocampal sclerosis (HS) and temporal lobe epilepsy (TLE) has long been debated. Our objective is to determine whether FSE produces acute hippocampal injury that evolves to HS. METHODS:FEBSTAT and 2 affiliated studies prospectively recruited 226 children ag...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.24081
更新日期:2014-02-01 00:00:00
abstract:OBJECTIVE:Infantile spasms are seizures associated with a severe epileptic encephalopathy presenting in the first 2 years of life, and optimal treatment continues to be debated. This study evaluates early and sustained response to initial treatments and addresses both clinical remission and electrographic resolution of...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.24594
更新日期:2016-03-01 00:00:00
abstract::Intellectual disability is common and is associated with significant morbidity. Until the latter half of the 20th century, there were no efficacious treatments. Following initial breakthroughs associated with newborn screening and metabolic corrections, little progress was made until recently. With improved understand...
journal_title:Annals of neurology
pub_type: 杂志文章,评审
doi:10.1002/ana.24002
更新日期:2013-09-01 00:00:00
abstract::Autopsy examination confirmed the diagnosis of subacute necrotizing encephalomyelopathy (SNE) in a 7-month-old male infant who underwent several metabolic studies before death. Intermittent lactic acidemia and fumaric aciduria, an extreme hyperglycemic response to an intravenous bolus of alanine, and an elevated total...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410060605
更新日期:1979-12-01 00:00:00
abstract::MK-801 and ketamine are noncompetitive N-methyl-D-aspartate (NMDA) receptor blockers that decrease brain injury in animal models of focal and global ischemia. Recent reports, however, suggested that MK-801 itself can damage neurons. Here we show that MK-801 (0.1 to 5.0 mg/kg) and ketamine (40 to 100 mg/kg) typically i...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410300609
更新日期:1991-12-01 00:00:00
abstract::We recently reported that systemic administration of a proteasome inhibitor induced a progressive levodopa-responsive, bradykinetic syndrome in rats with imaging, pathological, and biochemical features that strikingly resemble what is found in PD. This model has the potential to be a useful tool for studying the mecha...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.20936
更新日期:2006-08-01 00:00:00
abstract::To elucidate the mechanism by which carbamazepine lowers somatostatin concentration in cerebrospinal fluid of humans, the effect of carbamazepine on secretion of this peptide was studied in rat cerebral cell cultures. Concentrations of carbamazepine within the therapeutic range (4 x 10(-5) M) inhibited spontaneous rel...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410290412
更新日期:1991-04-01 00:00:00
abstract::Friedreich's ataxia (FA) is the most frequently inherited ataxia. To test the hypothesis that iron is increased in the cerebellum of patients with FA, we developed a multigradient echo magnetic resonance sequence for the three-dimensional imaging of brain iron-induced contrast. Relaxation rate (R2*) values in the unaf...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/1531-8249(199907)46:1<123::aid-ana19>3.0.c
更新日期:1999-07-01 00:00:00
abstract:OBJECTIVE:To examine the association between odor identification deficits and future mortality in a multiethnic community cohort of older adults. METHODS:Participants were evaluated with the 40-item University of Pennsylvania Smell Identification Test (UPSIT). Follow-up occurred at 2-year intervals with information on...
journal_title:Annals of neurology
pub_type: 杂志文章,随机对照试验
doi:10.1002/ana.24447
更新日期:2015-09-01 00:00:00
abstract::Mutations in AbetaPP cause deposition of Abeta amyloid fibrils in brain parenchyma and cerebral vessels, resulting in Alzheimer's disease (AD) and/or cerebral amyloid angiopathy (CAA). We report a novel mutation (L705V) within the Abeta sequence of AbetaPP in a family with autosomal dominant, recurrent intracerebral h...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.20571
更新日期:2005-10-01 00:00:00
abstract::Intracranial abscesses are uncommon in the newborn. Observation of 2 infants and a review of the literature reveal that the offending organism was a Citrobacter in 12 of the 16 documented cases. In the Neonatal Meningitis Cooperative Study this organism was responsible for meningitis in only 4%. However, an analysis o...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410080308
更新日期:1980-09-01 00:00:00
abstract::Patterns of cerebral metabolic intercorrelations were compared in the resting state in 15 healthy young men (ages 20 to 32 years) and 15 healthy elderly men (ages 64 to 83 years). Controlling for whole-brain glucose metabolism, partial correlation coefficients were determined between pairs of regional cerebral metabol...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410190111
更新日期:1986-01-01 00:00:00
abstract::We studied rhesus monkeys with hemiparkinsonism or bilateral parkinsonism produced by unilateral or bilateral intracarotid administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine. Using a standardized clinical rating scale, 4 hemiparkinsonian monkeys showed a 13 to 56% (mean, 36%) spontaneous improvement during...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410290618
更新日期:1991-06-01 00:00:00
abstract:OBJECTIVE:We utilized the amyloid imaging ligand Pittsburgh Compound B (PiB) to determine the presence of Alzheimer's disease (AD) pathology in different mild cognitive impairment (MCI) subtypes and to relate increased PiB binding to other markers of early AD and longitudinal outcome. METHODS:Twenty-six patients with ...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.21598
更新日期:2009-05-01 00:00:00