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https://www.readbyqxmd.com/read/29989948/modeling-detecting-and-tracking-freezing-of-gait-in-parkinson-disease-using-inertial-sensors
#1
G V Prateek, Isaac Skog, Marie E McNeely, Ryan P Duncan, Gammon M Earhart, Arye Nehorai
In this paper, we develop new methods to automatically detect the onset and duration of freezing of gait (FOG) in people with Parkinson disease (PD) in real-time, using inertial sensors. We first build a physical model that describes the trembling motion during the FOG events. Then, we design a generalized likelihood ratio test framework to develop a two-stage detector for determining the zero-velocity and trembling events during gait. Thereafter, to filter out falsely detected FOG events, we develop a point-process filter that combines the output of the detectors with information about the speed of the foot, provided by a foot-mounted inertial navigation system...
December 20, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/29985119/freezing-of-gait-in-parkinson-s-disease-functional-neuroimaging-studies-of-the-frontal-lobe
#2
María José Gallardo, Juan Pablo Cabello, María Jesus Corrales, Javier Torres-Donaire, Jose Javier Bravo, María Prado Talavera, Alberto León, Julia Vaamonde-Gamo
OBJECTIVE: The objective of the study is to study a group of patients with Parkinson's disease (PD) with and without freezing of gait (FOG) and analyze neuropsychological differences, especially regarding executive functions, according to their performance in a set of tests, and potential anomalies in functional positron emission tomography with 2-deoxy-2-[fluorine-18]fluoro-d-glucose integrated with computed tomography (18 F-FDG PET/CT) neuroimaging results of the frontal lobe. METHODS: The study recruited 23 patients...
July 9, 2018: Neurological Research
https://www.readbyqxmd.com/read/29977280/effect-of-group-based-rehabilitation-combining-action-observation-with-physiotherapy-on-freezing-of-gait-in-parkinson-s-disease
#3
Elisa Pelosin, Roberta Barella, Cristina Bet, Elisabetta Magioncalda, Martina Putzolu, Francesca Di Biasio, Cecilia Cerulli, Mauro Casaleggio, Giovanni Abbruzzese, Laura Avanzino
Freezing of gait (FoG) is among the most disabling symptoms of Parkinson's disease (PD) patients. Recent studies showed that action observation training (AOT) with repetitive practice of the observed actions represents a strategy to induce longer-lasting effects compared with standard physiotherapy. We investigated whether AOT may improve FoG and mobility in PD, when AOT is applied in a group-based setting. Sixty-four participants with PD and FoG were assigned to the experimental (AO) or control groups and underwent a 45-minute training session, twice a week, for 5 weeks...
2018: Neural Plasticity
https://www.readbyqxmd.com/read/29973489/action-observation-in-people-with-parkinson-s-disease-a-motor%C3%A2-cognitive-combined-approach-for-motor-rehabilitation-a-preliminary-report
#4
Walter Di Iorio, Alessandro Ciarimboli, Giorgio Ferriero, Michele Feleppa, Luigi Baratto, Giuseppe Matarazzo, Giovanni Gentile, Stefano Masiero, Patrizio Sale
The aim of this study was to assess the role of Action Observation (AO) to improve balance, gait, reduce falls, and to investigate the changes in P300 pattern. Five cognitively intact People with Parkinson’s disease (PwP) were enrolled in this prospective, quasi-experimental study to undergo a rehabilitation program of AO for gait and balance recovery of 60 min, three times a week for four weeks. The statistical analysis showed significant improvements for Unified Parkinson’s Disease Rating Scale (UPDRS) motor section III p = 0...
July 4, 2018: Diseases (Basel)
https://www.readbyqxmd.com/read/29956025/the-effects-of-anodal-tdcs-over-the-supplementary-motor-area-on-gait-initiation-in-parkinson-s-disease-with-freezing-of-gait-a-pilot-study
#5
Chiahao Lu, Sommer L Amundsen Huffmaster, Paul J Tuite, Colum D MacKinnon
OBJECTIVE: We investigated if anodal transcranial direct current stimulation (A-tDCS), applied over the supplementary motor areas (SMAs), could improve gait initiation in Parkinson's disease (PD) with freezing of gait (FOG). METHODS: In this double-blinded cross-over pilot study, ten PD with FOG underwent two stimulation sessions: A-tDCS (1 mA, 10 min) and sham stimulation. Eight blocks of gait initiation were collected per session: (1) pre-tDCS, with acoustic cueing; (2) pre-tDCS, self-initiated (no cue); and (3-8) post-tDCS, self-initiated...
June 28, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29902470/automated-mechanical-peripheral-stimulation-effects-on-gait-variability-in-individuals-with-parkison-s-disease-and-freezing-of-gait-a-double-blind-randomized-controlled-trial-ms-ref-no-archives-pmr-d-18-00162
#6
Ana Francisca Rozin Kleiner, Aline de Souza Pagnussat, Camila Pinto, Ritchele Rovido, Ana Paula Salazar, Manuela Galli
OBJECTIVE: to assess the effects of Automated Peripheral Stimulation (AMPS) in reducing gait variability of subjects with Parkinson's Disease (PD) and freezing of gait (FOG) treated with AMPS and to explore the effects of this treatment on gait during a single task (walking) and a dual task (walking while attending the word-color Stroop test). DESIGN: interventional, double-blinded, placebo-controlled, randomized trial. SETTING: Clinical rehabilitation...
June 11, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29846707/deep-brain-stimulation-of-the-pedunculopontine-nucleus-area-in-parkinson-disease-mri-based-anatomoclinical-correlations-and-optimal-target
#7
Laurent Goetz, Manik Bhattacharjee, Murielle U Ferraye, Valérie Fraix, Carina Maineri, Daniela Nosko, Albert J Fenoy, Brigitte Piallat, Napoléon Torres, Alexandre Krainik, Eric Seigneuret, Olivier David, Martin Parent, André Parent, Pierre Pollak, Alim-Louis Benabid, Bettina Debu, Stéphan Chabardès
BACKGROUND: Experimental studies led to testing of deep brain stimulation (DBS) of the pedunculopontine nucleus (PPN) as a new therapy to treat freezing of gait (FOG) in Parkinson disease (PD). Despite promising initial results fueling a growing interest toward that approach, several clinical studies reported heterogeneity in patient responses. Variation in the position of electrode contacts within the rostral brainstem likely contributes to such heterogeneity. OBJECTIVE: To provide anatomoclinical correlations of the effect of DBS of the caudal mesencephalic reticular formation (cMRF) including the PPN to treat FOG by comparing the normalized positions of the active contacts among a series of 11 patients at 1- and 2-yr follow-up and to provide an optimal target through an open-label study...
May 25, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29843253/cardinal-motor-features-of-parkinson-s-disease-coexist-with-peak-dose-choreic-type-drug-induced-dyskinesia
#8
Etienne Goubault, Hung P Nguyen, Sarah Bogard, Pierre J Blanchet, Erwan Bézard, Claude Vincent, Mélanie Langlois, Christian Duval
BACKGROUND: Clinical and anecdotal observations propose that patients with Parkinson's disease (PD) may show drug-induced dyskinesia (DID) concomitantly with cardinal motor features. However, the extent of the concomitant presence of DID and cardinal features remains to be determined. OBJECTIVES: This cross-sectional study measured peak-dose choreic-type DID in a quantitative manner in patients diagnosed with PD, and determined whether symptoms such as tremor, bradykinesia, rigidity, postural instability or freezing of gait (FoG) were still detectable in these patients...
2018: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/29801899/can-early-dopamine-transporter-imaging-serve-as-a-predictor-of-parkinson-s-disease-progression-and-late-motor-complications
#9
Ruth Djaldetti, Amihai Rigbi, Lior Greenbaum, Johnathan Reiner, Mordechai Lorberboym
BACKGROUND: The role of nuclear imaging in predicting Parkinson's disease (PD) progression is unclear. This study investigated whether the degree of reduced striatal dopamine transporter binding at diagnosis of PD predicts later motor complications and time to disease progression. METHODS: We retrospectively studied 41 patients with early PD who underwent 123 I-FP-CIT SPECT and were followed thereafter with a mean disease duration of 9.51 ± 3.18 years. The association of quantitatively analyzed 123 I-FP-CIT binding in striatal subregions with the development of motor fluctuations, dyskinesias, freezing of gait (FOG) and falls as well as the time to Hoehn and Yahr (H&Y) stage 3 was evaluated...
July 15, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29796409/cognitive-training-for-freezing-of-gait-in-parkinson-s-disease-a-randomized-controlled-trial
#10
Courtney C Walton, Loren Mowszowski, Moran Gilat, Julie M Hall, Claire O'Callaghan, Alana J Muller, Matthew Georgiades, Jennifer Y Y Szeto, Kaylena A Ehgoetz Martens, James M Shine, Sharon L Naismith, Simon J G Lewis
The pathophysiological mechanism of freezing of gait (FoG) has been linked to executive dysfunction. Cognitive training (CT) is a non-pharmacological intervention which has been shown to improve executive functioning in Parkinson's disease (PD). This study aimed to explore whether targeted CT can reduce the severity of FoG in PD. Patients with PD who self-reported FoG and were free from dementia were randomly allocated to receive either a CT intervention or an active control. Both groups were clinician-facilitated and conducted twice-weekly for seven weeks...
2018: NPJ Parkinson's Disease
https://www.readbyqxmd.com/read/29790385/kinect4fog-monitoring-and-improving-mobility-in-people-with-parkinson-s-using-a-novel-system-incorporating-the-microsoft-kinect-v2
#11
Amin Amini, Konstantinos Banitsas, William R Young
Parkinson's is a neurodegenerative condition associated with several motor symptoms including tremors and slowness of movement. Freezing of gait (FOG); the sensation of one's feet being "glued" to the floor, is one of the most debilitating symptoms associated with advanced Parkinson's. FOG not only contributes to falls and related injuries, but also compromises quality of life as people often avoid engaging in functional daily activities both inside and outside the home. In the current study, we describe a novel system designed to detect FOG and falling in people with Parkinson's (PwP) as well as monitoring and improving their mobility using laser-based visual cues cast by an automated laser system...
May 23, 2018: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29773512/increased-foot-strike-variability-in-parkinson-s-disease-patients-with-freezing-of-gait
#12
Jesal Shah, Lakshmi Pillai, David K Williams, Shannon M Doerhoff, Linda Larson-Prior, Edgar Garcia-Rill, Tuhin Virmani
INTRODUCTION: Freezing of gait (FOG) is a debilitating, late motor complication of Parkinson's disease (PD) that occurs in 50-80% of patients. Gait freezing significantly worsens quality of life by decreasing mobility and increasing falls. Studies have shown that patients with episodic freezing episodes also have deficits in continuous gait. We evaluated whether there was an objective gait correlate to the increased stumbling reported by many patients with gait freezing. METHODS: PD subjects and healthy controls (HC) were enrolled after IRB approval...
May 1, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29708870/validation-of-freezing-of-gait-monitoring-using-smartphone
#13
Han Byul Kim, Hong Ji Lee, Woong Woo Lee, Sang Kyong Kim, Hyo Seon Jeon, Hye Young Park, Chae Won Shin, Won Jin Yi, Beomseok Jeon, Kwang S Park
BACKGROUND: Freezing of gait (FOG) is a commonly observed motor symptom for patients with Parkinson's disease (PD). The symptoms of FOG include reduced step lengths or motor blocks, even with an evident intention of walking. FOG should be monitored carefully because it not only lowers the patient's quality of life, but also significantly increases the risk of injury. INTRODUCTION: In previous studies, patients had to wear several sensors on the body and another computing device was needed to run the FOG detection algorithm...
April 30, 2018: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/29696615/influence-of-cognitive-impairment-on-the-freezing-of-gait-in-non-demented-people-with-parkinson-s-disease
#14
J M Cancela, C M Nascimento, S Varela, M Seijo-Martinez, L Lorenzo-Lopez, J C Millan-Calenti, C Dominguez-Vivero, C Ayan
INTRODUCTION: Freezing of gait (FOG) is a motor disturbance usually appearing in advanced Parkinson's disease (PD). Cognitive and executive function seems to play an important role in this phenomenon. AIM: To investigate if cognitive and kinematic parameters correlate with FOG in PD patients without dementia. PATIENTS AND METHODS: We conducted an observational cross-sectional study. Participants were classified in two groups: freezers and non-freezers...
May 1, 2018: Revista de Neurologia
https://www.readbyqxmd.com/read/29648576/life-space-mobility-in-parkinson-s-disease-associations-with-motor-and-non-motor-symptoms
#15
Merja Rantakokko, Susanne Iwarsson, Björn Slaug, Maria H Nilsson
Background: To describe life-space mobility and explore associations of motor and non-motor symptoms with life-space mobility in people with Parkinson's disease (PD). Methods: 164 community-dwelling persons with PD (mean age 71.6 years, 64.6% men) received a postal survey and a subsequent home visit. Motor assessments included perceived walking difficulties (Walk-12G), mobility (Timed Up and Go test), motor symptoms (UPDRS-III) and freezing of gait (item 3, FOG-Qsa)...
April 10, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29643593/characteristics-associated-with-freezing-of-gait-in-actual-daily-living-in-parkinson-s-disease
#16
Mitsuaki Ishii, Kohei Okuyama
[Purpose] Parkinson's disease (PD) patients often freeze in actual daily living but seldom in clinical setting. This study aimed to identify the factors contributing to freezing of gait (FOG). [Subjects and Methods] The participants included 28 adults with PD. Principal component analysis was used to investigate the characteristics of 14 common FOG situations adopted from previous studies. Cluster analysis classified the subjects into four groups. Kruskal-Wallis test was performed to compare the PD Questionnaire-39 mobility dimension between the groups...
December 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29616302/alterations-in-white-matter-network-topology-contribute-to-freezing-of-gait-in-parkinson-s-disease
#17
Julie M Hall, James M Shine, Kaylena A Ehgoetz Martens, Moran Gilat, Kathryn M Broadhouse, Jennifer Y Y Szeto, Courtney C Walton, Ahmed A Moustafa, Simon J G Lewis
Freezing of gait (FOG) is a common symptom in advanced Parkinson's disease (PD). Despite current advances, the neural mechanisms underpinning this disturbance remain poorly understood. To this end, we investigated the structural organisation of the white matter connectome in PD freezers and PD non-freezers. We hypothesized that freezers would show an altered network architecture, which could hinder the effective information processing that characterizes the disorder. Twenty-six freezers and twenty-four well-matched non-freezers were included in this study...
April 3, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29602542/decreased-interhemispheric-homotopic-connectivity-in-parkinson-s-disease-patients-with-freezing-of-gait-a-resting-state-fmri-study
#18
Junyi Li, Yongsheng Yuan, Min Wang, Jiejin Zhang, Li Zhang, Siming Jiang, Xixi Wang, Jian Ding, Kezhong Zhang
INTRODUCTION: Freezing of gait is a common complaint in patients with Parkinson's disease (PD). However, the neural bases of freezing of gait in PD remain uncertain. Existing studies on PD patients with freezing of gait (PD-FOG+) have reported damage of the corpus callosum, the largest commissural bundle of the brain. Thus, in this study we explored homotopic connectivity to investigate FOG-related interehemispheric alterations METHODS: A total of 21 PD-FOG + patients, 33 PD patients without freezing of gait (PD-FOG-), and 24 matched healthy controls were recruited...
March 26, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29572571/exploring-the-relationship-between-motor-impairment-vascular-burden-and-cognition-in-parkinson-s-disease
#19
Tanja Stojkovic, Elka Stefanova, Ivan Soldatovic, Vladana Markovic, Iva Stankovic, Igor Petrovic, Federica Agosta, Sebastiano Galantucci, Massimo Filippi, Vladimir Kostic
OBJECTIVE: To determine frequency and type of cognitive disorders in cross-sectional analysis of a Parkinson's disease (PD) cohort, and explore its relations to motor symptoms, modifiable vascular risk factors and white matter lesions (WML) volume. METHODS: In a group of 133 PD patients, mild cognitive impairment (PD-MCI) and dementia (PDD) were diagnosed according to Movement Disorders Society Task Force criteria (level 2 for PD-MCI). Detailed motor measurements were applied, including rigidity, axial, bradykinesia, tremor and postural instability gait disorders (PIGD) scores...
June 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29571872/alterations-of-regional-homogeneity-in-freezing-of-gait-in-parkinson-s-disease
#20
Caihong Zhou, Xiaoling Zhong, Yongzhe Yang, Wanqun Yang, Lijuan Wang, Yuhu Zhang, Kun Nie, Jianmin Xu, Biao Huang
INTRODUCTION: Freezing of gait (FOG) is a serious complication in patients with Parkinson's disease (PD), and is more common in the late state of the disease. The high risk of falling in patients with FOG impacts their quality of life. OBJECTIVE: To explore altered neuroactivity related to cognitive and executive function of PD patients with FOG. METHODS: Fourteen PD patients with FOG (FOG+), 20 PD patients without FOG (FOG-), and 18 normal controls (NC) were enrolled...
April 15, 2018: Journal of the Neurological Sciences
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