Abstract:
:Bradykinesia is a disabling symptom of Parkinson's disease (PD) which presents with slowness of movement. Visual assessment using clinical rating scales is currently the gold standard to assess bradykinesia. Such assessments require multiple separate movements, are subjective, and rely on the ability of the rater to determine frequency and amplitude features of excursion of multiple joints simultaneously. The current study introduces the use of wearable inertial measurement units (IMUs) to characterize full-arm repetitive movements and provide a new index score for bradykinesia severity (BKI) in the upper limbs. The BKI provides an approach to measuring bradykinesia reliably and objectively. Importantly, this index is needed to demonstrate separability between healthy individuals and PD participants, and also between bradykinetic and non-bradykinetic PD participants. Thirteen PD participants and ten age-matched healthy control participants were studied. Using a single upper limb task that activated multiple joints and recordings from angular displacements from all joints, features relevant to demonstrating bradykinesia were extracted and systematically combined to create the total BKI. A strong correlation coefficient was obtained comparing BKI to upper limb UPDRS bradykinesia scores (rs=-0.626, p=0.001). The BKI successfully identified differences between control and PD participants (p=0.018). The BKI was also sensitive enough to identify differences within the PD population, separating PD participants with and without bradykinesia (p<0.001). This study demonstrates the feasibility of using IMU-based motion capture systems and employing the new BKI for quantitative assessment of bradykinesia. This approach when generalized to lower extremity and truncal movements would be able to provide an objective and reproducible whole body bradykinesia index.
journal_name
J Neurol Scijournal_title
Journal of the neurological sciencesauthors
Delrobaei M,Tran S,Gilmore G,McIsaac K,Jog Mdoi
10.1016/j.jns.2016.07.056subject
Has Abstractpub_date
2016-09-15 00:00:00pages
337-42eissn
0022-510Xissn
1878-5883pii
S0022-510X(16)30469-5journal_volume
368pub_type
杂志文章abstract::Low 25-hydroxy vitamin D (25-[OH]-D) serum concentrations have been associated with higher disease activity in multiple sclerosis (MS) patients. In a large cross-sectional study we assessed the vitamin D status in MS patients in relation to seasonality and relapse rate. 415 MS-patients (355 relapsing-remitting MS and ...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2017.01.059
更新日期:2017-04-15 00:00:00
abstract::An unusual fatal congenital myopathy in a Chinese female infant is described. Muscle biopsy showed type I fibre smallness with central nuclei and focal decrease in oxidative enzyme activities affecting mainly larger type II fibres. Longitudinal sections from glutaldehyde-fixed araldite-embedded material stained with t...
journal_title:Journal of the neurological sciences
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doi:10.1016/0022-510x(81)90173-8
更新日期:1981-05-01 00:00:00
abstract::Alzheimer's disease (AD) is a complex disorder and the most common form of neurodegenerative dementia. Several genetic, environmental, and physiological factors, including inflammations and metabolic influences, are involved in the progression of AD. Inflammations are composed of complicated networks of many chemokine...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章,评审
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abstract::In order to clarify whether or not marked changes in the social environment during the past 50 years in Japan may have altered the clinical phenotypes of multiple sclerosis (MS), we retrospectively analyzed 143 consecutive patients with clinically definite MS who developed the disease between 1950 and 1997. Fifty-two ...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/s0022-510x(99)00115-x
更新日期:1999-06-15 00:00:00
abstract::Systemic administration of opiates or direct injection of opioid peptides into the periaqueductal gray (PAG) produces a profound antinociception which is thought to be associated with inhibition of neuronal activity in the PAG. This inhibitory effect has been postulated to result from opiate inhibition of GABAergic ne...
journal_title:Journal of the neurological sciences
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doi:10.1016/s0022-510x(98)00327-x
更新日期:1999-03-01 00:00:00
abstract::There have been recent developments in the pathology of sporadic ALS. A new filamentous neuronal inclusion body in ALS detected by immunohistochemical localisation of the protein ubiquitin has been characterised at the light microscopic and ultrastructural level and appears specific for the disease. The molecular comp...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章,评审
doi:10.1016/0022-510x(94)90175-9
更新日期:1994-07-01 00:00:00
abstract:OBJECTIVE:Cerebral gas embolism (CGE) is a potentially catastrophic complication of central venous catheters (CVCs) manipulation or accidental disconnection, which is rarely reported in the literature. This systematic review aims to characterize the clinical manifestations, imaging features and outcome of CGE associate...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章,评审
doi:10.1016/j.jns.2016.01.043
更新日期:2016-03-15 00:00:00
abstract:BACKGROUND:Amyotrophic lateral sclerosis (ALS) is a progressive and fatal disease characterized by progressive degeneration of spinal and bulbar motor neurons. However up to 50% ALS patients may also have cognitive dysfunction which has not been fully examined. METHODS:35 ALS patients [23 patients presenting with limb...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2012.04.020
更新日期:2012-08-15 00:00:00
abstract::Association of changes in olfactory-related structures with olfactory function in patients with multiple sclerosis (MS) is not well understood. We used a T&T olfactometer test kit to evaluate olfactory function in 26 patients with MS and 26 age- and sex-matched healthy controls (HC). Then, Brain MRI were performed and...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2016.03.045
更新日期:2016-06-15 00:00:00
abstract::Etiology and source of amyloid deposition in senile plaques of Alzheimer's disease (AD) are still unknown. In order to know whether or not fibronectin (Fn), an adhesive glycoprotein, is related to the amyloid deposition in the senile plaque, we conducted immunohistochemical studies using polyclonal anti-Fn and affinit...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(88)90031-7
更新日期:1988-05-01 00:00:00
abstract::Recent advances in magnetic resonance high-resolution vessel wall imaging (HRVWI), which can detect intramural hematomas (IMH), improve the noninvasive diagnostic accuracy of isolated posterior inferior cerebellar artery dissection (iPICA-D). However, despite the risk of overlooking minute IMH, the utility of T2-weigh...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2020.116693
更新日期:2020-04-15 00:00:00
abstract::Mice were inoculated with herpes simplex virus (HSV) type 1 by gently scraping the skin of the nose with a fine needle. About 80% of the animals developed latent inapparent HSV infections in trigeminal ganglia. Virus was demonstrable for at least 6 months post inoculation (p.i.) by cocultivation of ganglionic tissue w...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(79)90119-9
更新日期:1979-10-01 00:00:00
abstract:BACKGROUND AND AIMS:Subacute combined degeneration (SACD) of the spinal cord, characterized by degeneration of lateral and posterior columns, is often found in vitamin B12 deficiency. Our aim was to look for sensitivity of imaging in depicting the spinal cord abnormality in vitamin B12 deficient patients and to find an...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2014.05.020
更新日期:2014-07-15 00:00:00
abstract::Intravascular lymphoma (IVL) is a rare disorder characterized by the aggregation of malignant large cell lymphoma cells in small vessels. Neurological manifestations are typically the initial and, often the only, clinically obvious consequences of this malignancy. Diagnosis is dependent on biopsy or postmortem demonst...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2005.01.001
更新日期:2005-05-15 00:00:00
abstract::The nosological relationship between Bickerstaff s brainstem encephalitis (BBE) and Guillain-Barre syndrome (GBS) has yet to be clarified. We report results of the autopsy of a patient for whom overlapping BBE and GBS was diagnosed clinically. This and similar cases support the original authors' hypothesis that BBE is...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/s0022-510x(96)00251-1
更新日期:1997-01-01 00:00:00
abstract::The relationship between Restless Legs Syndrome (RLS) and Parkinson's disease (PD) is still controversial. Most genetic, pathological, and imaging data argue against a close association of these two disorders. Still, many studies reported an increased prevalence of RLS in PD patients. These studies are difficult to in...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章,评审
doi:10.1016/j.jns.2009.08.035
更新日期:2010-02-15 00:00:00
abstract::Structural alterations of endoneurial microvessels occur in diabetic neuropathy and are statistically associated with severity of nerve fiber loss and teased fiber abnormality. It is therefore hypothesized that the microvessel alterations may cause or contribute to pathologic alterations of nerve fibers in diabetic ne...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(90)90197-u
更新日期:1990-10-01 00:00:00
abstract::Thirteen months after castration of male rats the weight of their soleus muscles was lowered to 82% and their choline acetyltransferase (ChAc) activity to 83% of control values. The administration of testosterone lasting 5 weeks increased the weight of the soleus muscles of castrated animals by 19% and their ChAc acti...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(76)90008-3
更新日期:1976-03-01 00:00:00
abstract:BACKGROUND:Current American Stroke Association guidelines recommend initiating intravenous thrombolysis (IVT) for acute ischemic stroke (AIS) within 60min of patient arrival, given the benefits of IVT for AIS are time dependent. This study aimed to identify the delaying factors in door-to-needle time (DTN) in the emerg...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2017.03.003
更新日期:2017-05-15 00:00:00
abstract::A nitric oxide releasing compound, NOC-18, was injected intrathecally in order to determine the role of NO in spinal nociceptive mechanisms in rats. The nociceptive threshold was evaluated by the radiant heat tail-flick test. The effects of intrathecal injection of N-nitro-L-arginine methyl ester (L-NAME), an NO synth...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/s0022-510x(97)00188-3
更新日期:1997-12-09 00:00:00
abstract::Aceruloplasminemia is a disorder of iron metabolism caused by mutations in the ceruloplasmin gene. It is characterized by progressive neurodegeneration of the retina, basal ganglia, dentate nucleus and cerebral cortex in association with iron accumulation in these tissues. Enzyme activities in the mitochondrial respir...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/s0022-510x(00)00452-4
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abstract::The muscarinic acetylcholine receptors were identified in membrane preparations from human tissues by the specific binding of 1-[benzilic-4,4'-3H] quinuclidinyl benzilate. Saturation binding isotherms of this radioligand yielded a total amount of receptors of 435 +/- 208, 159 +/- 65 and 913 +/- 89 fmol/mg protein, res...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(90)90099-9
更新日期:1990-06-01 00:00:00
abstract:INTRODUCTION:Controversy persists on the best treatment to control ocular myasthenia gravis (OMG) and reduce conversion to generalized myasthenia gravis (GMG). We hypothesized that low dose prednisone could accomplish both in a cohort of OMG patients followed after three years. METHODS:We reviewed the records of 168 p...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2020.117274
更新日期:2021-01-15 00:00:00
abstract:OBJECTIVES:To compare the clinical course and muscle biopsy features of polymyositis with mitochondrial pathology (PM-Mito) to inclusion body myositis (IBM) and steroid-responsive inflammatory myopathies (polymyositis). METHODS:We compared clinical, laboratory and myopathologic features in a retrospective study of pat...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2008.11.010
更新日期:2009-03-15 00:00:00
abstract::The relationship between blood pressure(BP) and clinical outcome in patients with acute stroke is still controversial. The present study aimed to elucidate the impact of admission blood pressure on mortality in patients with acute stroke of different subtypes. Data were from ChinaQUEST (QUality Evaluation of Stroke Ca...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jns.2017.09.032
更新日期:2017-12-15 00:00:00
abstract::Facioscapulohumeral muscular dystrophy (FSHD) is one of the most frequent forms of muscular dystrophy. The aims of this study were: 1) to evaluate the prevalence of sleep disordered breathing (SDB) in patients with FSHD; 2) to define the sleep-related respiratory patterns in FSHD patients with SDB; and 3) to find the ...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2009.05.014
更新日期:2009-10-15 00:00:00
abstract::The effects of long-term exposure to aluminium on the development of Alzheimer-type neuropathological changes have been studied post-mortem in patients with chronic renal failure who did not have dialysis encephalopathy. Administration of aluminium-containing phosphate binding compounds appears to be a major factor in...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(92)90291-r
更新日期:1992-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Ischemic lesions rarely affect the cingulate cortex (CC) in isolation, restricting human lesion/behavioural change correlational analysis. The aim of this study was to determine clinical, neuropsychological and neuroimaging features of isolated cingulate infarcts. METHODS:We studied, 3800 patien...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2019.04.033
更新日期:2019-07-15 00:00:00
abstract::Hypnic headache (HH) is a rare benign disorder described initially by Raskin in 1988. It is characterized by recurrent nocturnal episodes of headache that periodically awaken the sleeping patient and usually occur in the elderly. This review is aimed at describing the clinical features of the HH cases in childhood tha...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章,评审
doi:10.1016/j.jns.2015.06.048
更新日期:2015-09-15 00:00:00
abstract::Water-suppressed proton magnetic resonance spectroscopy which has recently shown diagnostic potential in human stroke victims was performed in two patients who had suffered a hemispheric transient ischemic attack. Localized spectra were targeted from routine MR images. In one patient lactate could be observed 8 weeks ...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(92)90185-n
更新日期:1992-03-01 00:00:00