Abstract:
BACKGROUND:The freezing phenomenon is among the most disabling symptoms of Parkinson's disease (PD) manifesting most commonly as Freezing of Gait with a paroxysmal cessation of effective stepping. Recent studies have suggested that freezing is related to both impairments in conflict resolution as well as the processing of environmentally salient information. METHODS:In this study, we utilized a virtual reality gait paradigm to investigate differences in motor outflow between PD patients with (n = 36) and without (n = 37) Freezing of Gait, as well as age-matched healthy controls (n = 18). Subjects were required to navigate a realistic on-screen environment with the use of foot pedals to simulate stepping whilst responding to either cues associated with conflict resolution (congruent 'Red', 'Green' or 'Blue') or environmental salience (wide, narrow and sliding doorways). Footstep latency was used as a measure of motor output. RESULTS:Significantly increased stepping latencies were observed in freezers compared to non-freezers (p = 0.004) and controls (p = 0.016) in response to stimuli requiring the inhibition of implicitly cued behavior ('red' cue). Patients with Freezing of Gait also demonstrated increased motor latency compared to non-freezers and controls specifically in response to environmentally salient triggers including narrow doorways (p = 0.03 and 0.01 respectively) and the opening of a sliding door (p = 0.036 and 0.048 respectively). Performance on the paradigm in relation to these triggers correlated significantly with self-reported freezing severity. CONCLUSION:These results suggest that deficits in conflict resolution and visuospatial processing may reflect some of the neural mechanisms associated with freezing behavior and that these can be probed in a virtual reality environment.
journal_name
Parkinsonism Relat Disordjournal_title
Parkinsonism & related disordersauthors
Matar E,Shine JM,Naismith SL,Lewis SJdoi
10.1016/j.parkreldis.2013.06.002subject
Has Abstractpub_date
2013-11-01 00:00:00pages
937-42issue
11eissn
1353-8020issn
1873-5126pii
S1353-8020(13)00220-4journal_volume
19pub_type
杂志文章,随机对照试验abstract::Moclobemide, a potent reversible monoamine-oxidase A (MAO-A) inhibitor, is an effective antidepressant that does not cause impairment of cognitive function in elderly patients and might be beneficial to motor deficits in Parkinson's disease (PD). In a 12-week open-label prospective study, we administered moclobemide (...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/s1353-8020(97)00028-x
更新日期:1997-12-01 00:00:00
abstract:OBJECTIVES:To determine cortical grey matter (GM) changes and their clinical and biochemical correlates in patients with Wilson's disease using voxel based morphometry (VBM). METHODS:Clinical and imaging data of 10 patients (all male, mean age 16.0 ± 6.3years) with Wilson's Disease were analyzed. T1W volumetric MRI da...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2016.06.017
更新日期:2016-09-01 00:00:00
abstract::Levodopa is one of the most effective symptomatic treatment options for Parkinsonism with a favorable safety and tolerability profile. In some patients, particularly those suffering from orthostatic intolerance, the hypotensive effect of levodopa limits its therapeutic use. We used continuous noninvasive cardiovascula...
journal_title:Parkinsonism & related disorders
pub_type: 临床试验,杂志文章
doi:10.1016/j.parkreldis.2014.04.007
更新日期:2014-08-01 00:00:00
abstract:INTRODUCTION:In addition to neurogenic orthostatic hypotension (nOH), patients with synucleinopathies frequently have hypertension when supine. The long-term consequences of both abnormalities are difficult to disentangle. We aimed to determine if supine hypertension is associated with target organ damage and worse sur...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2020.04.011
更新日期:2020-06-01 00:00:00
abstract::Although primary focal hand dystonia has been well characterized, primary focal foot dystonia in adults has rarely been reported. Our objective was to describe the clinical phenotype and treatment outcomes in patients with primary, adult-onset focal foot dystonia. To this end we conducted a retrospective study of four...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2005.07.004
更新日期:2006-01-01 00:00:00
abstract:OBJECTIVE:To estimate the frequency and correlates of involuntary emotional expression disorder (IEED) in Parkinson's disease (PD) using the Center for Neurologic Study-Lability Scale (CNS-LS) and recently-proposed diagnostic criteria for IEED. BACKGROUND:IEED is characterized by uncontrollable emotional episodes, typ...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2009.01.001
更新日期:2009-08-01 00:00:00
abstract:BACKGROUND:Estimation of progression in Parkinson's disease (PD) is useful to guide clinical decisions and to enable patients to plan and manage their life with PD. Rapid eye movement (REM) sleep behavior disorder (RBD) and REM sleep without atonia (RWA) are recognized as early harbingers of neurodegeneration and may p...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2014.01.005
更新日期:2014-04-01 00:00:00
abstract:INTRODUCTION:Recent work suggests that wearables can augment conventional measures of Parkinson's disease (PD). We evaluated the relationship between conventional measures of disease and motor severity (e.g., MDS-UPDRS part III), laboratory-based measures of gait and balance, and daily-living physical activity measures...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2019.01.022
更新日期:2019-05-01 00:00:00
abstract::Clinical symptoms in Parkinson's disease (PD) comprise both motor and non-motor symptoms. In this disease, synucleinopathic-induced, nigral dopamine deficiency-related dysfunction of the basal ganglia is held responsible for the characteristic levodopa-responsive motor signs and symptoms (bradykinesia, hypokinesia, ri...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章,评审
doi:10.1016/S1353-8020(09)70770-9
更新日期:2009-12-01 00:00:00
abstract::The goal of genetic association studies is to identify common (>5%) risk factors in complex disease traits. Herein we describe the first replicable 'functional' risk allele for Parkinson's disease. The leucine-rich repeat kinase 2 (Lrrk2) G2385R substitution is associated with familial parkinsonism, late-, and early-o...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2006.12.001
更新日期:2007-03-01 00:00:00
abstract:INTRODUCTION:Olfactory dysfunction and neuropsychological symptoms like depression and anhedonia are common non-motor symptoms in Parkinson's disease (PD). The assessment of both functional domains includes clinical examination, olfactory testing, and standardized questionnaires. While olfaction is readily assessed by ...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2015.09.035
更新日期:2016-01-01 00:00:00
abstract:BACKGROUND:Essential tremor is the most common movement disorder in adults, but its exact etiology and pathophysiology are still not fully understood. There is some consensus, however, about the involvement of the cerebellum and accumulating evidence points towards a dysfunction of the gabaergic system. We hypothesize ...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2012.04.024
更新日期:2012-08-01 00:00:00
abstract::Genetic studies over the past 15 years have revolutionized our understanding towards the etiology of Parkinson's disease (PD). These studies have discovered many disease-linked genetic loci (PARK 1 to 18), which are now being interrogated for cellular pathways contributing to PD. Various pathogenic pathways were propo...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章,评审
doi:10.1016/S1353-8020(13)70037-3
更新日期:2014-01-01 00:00:00
abstract::Parkinson's disease (PD) is a common neurodegenerative disorder of unknown cause. For decades, a deficit in mitochondrial respiration was thought to be a key factor in PD neurodegeneration. However, excluding a few exceptions where a clinical picture of parkinsonism is associated with a mitochondrial DNA mutation, pre...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/S1353-8020(09)70823-5
更新日期:2009-12-01 00:00:00
abstract::Invasive human brain recordings have shown that acute therapeutic deep brain stimulation (DBS) reduces cortical synchronization, measured by coupling of beta phase to gamma amplitude. Here we show by noninvasive scalp electroencephalography that withdrawal of chronic DBS elevates phase-amplitude coupling, in proportio...
journal_title:Parkinsonism & related disorders
pub_type: 信件
doi:10.1016/j.parkreldis.2019.08.018
更新日期:2019-09-01 00:00:00
abstract:BACKGROUND:In addition to the most frequent TOR1A/DYT1 mutation (c.907_909delGAG), a growing number of TOR1A sequence variants are found in dystonia patients. For most, functional characterization has demonstrated pathogenicity at different levels, implying that TOR1A genetic testing should not be limited to screening ...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2015.08.001
更新日期:2015-10-01 00:00:00
abstract:INTRODUCTION:Increasing evidence shows a strong association between idiopathic REM sleep behavior disorder (iRBD) and α-synucleinopathies. Recent studies have indicated an inflammatory mechanism in the pathogenesis of α-synucleinopathies. Whether peripheral inflammatory cytokines are altered in iRBD and can be biomarke...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2020.07.017
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVES:Dissatisfaction with subthalamic deep brain stimulation (STN-DBS) despite motor improvements has been observed in Parkinson's disease (PD). Hence, we compared patient's subjective perceived outcome 12 months after surgery (12mFU) with clinical measures to identify risk factors of dissatisfaction. METHODS:Pa...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2016.01.019
更新日期:2016-03-01 00:00:00
abstract::The aim of this study was to assess the middle latency auditory evoked potential (MLAEP) findings in idiopathic Parkinson's disease (IPD) and in patients who are regarded as having atypical parkinsonian disorders (AP) and to determine whether MLAEPs could contribute to the differential diagnosis of IPD and AP.MLAEPs w...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/s1353-8020(99)00056-5
更新日期:2000-04-01 00:00:00
abstract:PURPOSE:Fall-related fracture is one of the most disabling features of idiopathic Parkinson's disease (PD). A better understanding of the associated factors is needed to predict PD patients who will require treatment. METHODS:This prospective study enrolled 100 adult idiopathic PD patients. Stepwise logistic regressio...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2013.09.024
更新日期:2014-01-01 00:00:00
abstract:INTRODUCTION:Tremor is frequently associated with dystonia, but its pathophysiology is still unclear. Dysfunctions of cerebellar circuits are known to play a role in the pathophysiology of action-induced tremors, and cerebellar impairment has frequently been associated to dystonia. However, a link between dystonic trem...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2016.06.011
更新日期:2016-10-01 00:00:00
abstract::Over the last decade, several autosomal dominant and recessive genes causative of Parkinson's disease (PD) have been identified. The functional studies on their protein products and the pathogenetic effect related to their mutations have greatly contributed to understand the many cellular pathways leading to neurodege...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章,评审
doi:10.1016/S1353-8020(11)70023-2
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Significant efforts have been focused on investigating the contribution of common variants to Parkinson disease (PD) risk. Several independent GWAS and metanalysis studies have shown a genome-wide significant association of single nucleotide polymorphisms (SNPs) in the α-synuclein (SNCA) and microtubule-asso...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2011.10.014
更新日期:2012-03-01 00:00:00
abstract::Spinocerebellar ataxia (SCA) 17 is a dominant neurodegenerative disorder characterized by ataxia, cognitive decline, dystonia, and parkinsonism. The disease is caused by unstable cytosine-adenine-guanine (CAG) trinucleotide expansion mutation coding for polyglutamine tracts in the TATA box-binding protein (TBP), a gen...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2006.04.009
更新日期:2007-05-01 00:00:00
abstract:INTRODUCTION:Our objective was to compare the relative value of elements of the motor system in predicting the physical mobility domain of health related quality of life in patients with Parkinson's disease in order to specify targets for intervention. METHODS:In this cross-sectional study, the Parkinson's disease que...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2011.07.004
更新日期:2011-11-01 00:00:00
abstract::Corticobasal degeneration (CBD) presents with symptoms that often overlap with other neurological conditions. In many cases, diagnosis, prognosis and consequent clinical management remain uncertain. Structural and functional asymmetric brain changes represent the most consistent imaging findings that may assist in CBD...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2007.09.011
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:Parkinson disease (PD) and multiple system atrophy (MSA) share some neuropathologic features (nigrostriatal dopaminergic lesion, alpha-synuclein deposition) but not others (Lewy bodies in PD, glial cytoplasmic inclusions in MSA). In PD evidence has accrued for a vesicular storage defect and decreased aldehyd...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2015.03.006
更新日期:2015-06-01 00:00:00
abstract:BACKGROUND:A mean of 10 years elapse before patients with Parkinson's disease (PD) reach Hoehn & Yahr (H&Y) stage 4, and 14 years for stage 5. A small proportion of PD patients survive and are ambulatory for ≥ 20 years. We sought to identify features associated with long-duration PD (dPD). METHODS:This five-center, ca...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2012.07.008
更新日期:2013-01-01 00:00:00
abstract:INTRODUCTION:Alpha-synuclein (α-syn) aggregation is the pathological hallmark of Parkinson's Disease (PD). In this study, we measured α-syn total (α-syntotal), oligomeric α-syn (α-synolig) and α-synolig/α-syntotal ratio in the saliva of patients affected by PD and in age and sex-matched healthy subjects. We also compar...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2019.02.014
更新日期:2019-06-01 00:00:00
abstract:INTRODUCTION:We sought to assess the effect of subthalamic deep brain stimulation (STN DBS) on Parkinson's disease (PD)-associated postural abnormalities. METHODS:A computerized analysis of posture was used to quantify the thoracolumbar, thoracic, and cervical-occipital ventral angles, as well as the thoracolumbar and...
journal_title:Parkinsonism & related disorders
pub_type: 杂志文章
doi:10.1016/j.parkreldis.2019.01.003
更新日期:2019-05-01 00:00:00