keyword
MENU ▼
Read by QxMD icon Read
search

Motor fluctuations

keyword
https://www.readbyqxmd.com/read/29037498/levodopa-carbidopa-intestinal-gel-in-advanced-parkinson-s-final-results-of-the-gloria-registry
#1
Angelo Antonini, Werner Poewe, K Ray Chaudhuri, Robert Jech, Barbara Pickut, Zvezdan Pirtošek, Jozsef Szasz, Francesc Valldeoriola, Christian Winkler, Lars Bergmann, Ashley Yegin, Koray Onuk, David Barch, Per Odin
INTRODUCTION: This registry evaluated the 24-month safety and efficacy of levodopa-carbidopa intestinal gel (LCIG) treatment in advanced Parkinson's disease (PD) patients under routine clinical care. METHODS: Motor fluctuations, dyskinesia, non-motor symptoms, quality of life, and safety were evaluated. Observations were fully prospective for treatment-naïve patients (60% of patients) and partially retrospective for patients with ≤12 months of pre-treatment with LCIG (40% of patients)...
September 22, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29032012/continuous-subcutaneous-apomorphine-infusion-in-parkinson-s-disease-patients-with-cognitive-dysfunction-a-retrospective-long-term-follow-up-study
#2
Robbert W K Borgemeester, Teus van Laar
INTRODUCTION: Continuous apomorphine infusion (CAI) is an advanced therapy in fluctuating Parkinson's disease (PD). The use of CAI is controversial in PD patients with cognitive dysfunction including visual hallucinations (VHs), and orthostatic hypotension (OH). This study was set-up to analyze the effectiveness and safety of CAI in elderly PD patients with cognitive dysfunction. METHODS: This new-user cohort study identified fluctuating PD patients who started CAI treatment at the rehabilitation unit of Parkinson Expertise Center (RU-PEC) Groningen, from November 2004 until 2016...
September 29, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29031913/chronic-pain-and-pain-processing-in-parkinson-s-disease
#3
REVIEW
Pierre J Blanchet, Christine Brefel-Courbon
Pain is experienced by the vast majority of patients living with Parkinson's disease. It is most often of nociceptive origin, but may also be ascribed to neuropathic (radicular or central) or miscellaneous sources. The recently validated King's Parkinson's Disease Pain Scale is based on 7 domains including musculoskeletal pain, chronic body pain (central or visceral), fluctuation-related pain, nocturnal pain, oro-facial pain, pain with discolouration/oedema/swelling, and radicular pain. The basal ganglia integrate incoming nociceptive information and contribute to coordinated motor responses in pain avoidance and nocifensive behaviors...
October 12, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29023731/physiological-tremor-increases-when-skeletal-muscle-is-shortened-implications-for-fusimotor-control
#4
Kian Jalaleddini, Akira Nagamori, Christopher M Laine, Mahsa A Golkar, Robert E Kearney, Francisco J Valero-Cuevas
The involuntary force fluctuations associated with physiological (as distinct from pathological) tremor are an unavoidable component of human motor control. While the origins of physiological tremor are known to depend on muscle afferentation, it is possible that the mechanical properties of muscle-tendon systems also affect its generation, amplification and maintenance. In this paper, we investigated the dependence of physiological tremor on muscle length in healthy individuals. We measured physiological tremor during tonic, isometric plantarflexion torque at 30% of maximum at three ankle angles...
October 11, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/29018160/dopamine-dysregulation-syndrome-in-parkinson-s-disease-a-systematic-review-of-published-cases
#5
Nicola Warren, Cullen O'Gorman, Alexander Lehn, Dan Siskind
OBJECTIVES: Dopamine dysregulation syndrome (DDS) is an uncommon complication of the treatment of Parkinson's disease, characterised by addictive behaviour and excessive use of dopaminergic medication. DDS may frequently go unrecognised or misdiagnosed. We aimed to clarify current understanding of presentation, risk factors, comorbidities and management of DDS. METHODS: Case reports were identified through a systematic search of databases (PubMed, Embase) with the following terms: dopaminergic dysregulation syndrome, hedonistic homeostatic dysregulation, dopamine/levodopa addiction...
October 10, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28993094/characterization-of-diplopia-in-non-demented-patients-with-parkinson-s-disease
#6
Katharina A Schindlbeck, Shideh Schönfeld, Wanda Naumann, David J Friedrich, André Maier, Charlotte Rewitzer, Fabian Klostermann, Frank Marzinzik
INTRODUCTION: Although diplopia is considered a frequent symptom of Parkinson's disease (PD), little is known about its clinical manifestation, associated mechanisms and treatment. Here we characterized binocular diplopia in non-demented PD patients in an interdisciplinary setting. METHODS: PD patients were prospectively screened for diplopia, visual hallucinations, problems with spatial perception, contrast sensitivity, presence of blurred vision, and history of ophthalmological comorbidities via interview...
September 29, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28988834/predictive-model-for-health-related-quality-of-life-in-patients-with-parkinson-s-disease
#7
Sook Ja Lee, Sung Reul Kim, Sun Ju Chung, Hyun Cheol Kang, Mi Sun Kim, Su-Jin Cho, Hye Kyung Kwon, Jungwon Kim, Sun Young Jung
This study was conducted to develop and test a prediction model that explains health-related quality of life (HRQoL) of patients with Parkinson's disease (PD). Participants were 248 patients with PD enrolled in the neurology clinic of a university hospital in Seoul, Korea. The data were collected through structured questionnaires from March 1 to July 5, 2013. Motor fluctuations, depression, sleep disturbances, fatigue, and activities of daily living had significant direct effects on the quality of life of PD patients...
October 5, 2017: Geriatric Nursing
https://www.readbyqxmd.com/read/28985717/identification-of-vps35-p-d620n-mutation-related-parkinson-s-disease-in-a-taiwanese-family-with-successful-bilateral-subthalamic-nucleus-deep-brain-stimulation-a-case-report-and-literature-review
#8
Ying-Fa Chen, Yung-Yee Chang, Min-Yu Lan, Pei-Lung Chen, Chin-Hsien Lin
BACKGROUND: Vacuolar protein sorting 35 (VPS35) was recently reported to be a genetic cause for late-onset autosomal dominant Parkinson's disease (PD). However, VPS35 mutations are rarely reported in Asian populations. Herein, we report the first Taiwanese family with the pathogenic VPS35 p.D620N mutation, including one patient treated successfully with subthalamic nucleus deep brain stimulation (STN-DBS). CASE PRESENTATION: A 61-year-old woman presented with progressive left hand resting tremor at the age of 42...
October 6, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28985384/putting-it-in-context-linking-auditory-processing-with-social-behavior-circuits-in-the-vertebrate-brain
#9
Christopher L Petersen, Laura M Hurley
Context is critical to the adaptive value of communication. Sensory systems such as the auditory system represent an important juncture at which information on physiological state or social valence can be added to communicative information. However, the neural pathways that convey context to the auditory system are not well understood. The serotonergic system offers an excellent model to address these types of questions. Serotonin fluctuates in the mouse inferior colliculus (IC), an auditory midbrain region important for species-specific vocalizations, during specific social and non-social contexts...
July 27, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28975148/feedback-tracking-microrheology-in-living-cells
#10
Kenji Nishizawa, Marcel Bremerich, Heev Ayade, Christoph F Schmidt, Takayuki Ariga, Daisuke Mizuno
Living cells are composed of active materials, in which forces are generated by the energy derived from metabolism. Forces and structures self-organize to shape the cell and drive its dynamic functions. Understanding the out-of-equilibrium mechanics is challenging because constituent materials, the cytoskeleton and the cytosol, are extraordinarily heterogeneous, and their physical properties are strongly affected by the internally generated forces. We have analyzed dynamics inside two types of eukaryotic cells, fibroblasts and epithelial-like HeLa cells, with simultaneous active and passive microrheology using laser interferometry and optical trapping technology...
September 2017: Science Advances
https://www.readbyqxmd.com/read/28975055/unraveling-the-diversification-history-of-grasshoppers-belonging-to-the-trimerotropis-pallidipennis-oedipodinae-acrididae-species-group-a-hotspot-of-biodiversity-in-the-central-andes
#11
Noelia Verónica Guzmán, Silvia Mónica Pietrokovsky, Maria Marta Cigliano, Viviana Andrea Confalonieri
The Andean Mountain range has been recognized as one of the biodiversity hotspots of the world. The proposed mechanisms for such species diversification, among others, are due to the elevation processes occurring during the Miocene and the intensive glacial action during the Pleistocene. In this study we investigated the diversification history of the grasshopper Trimerotropis pallidipennis species complex which shows a particularly wide latitudinal and altitudinal distribution range across the northern, central and southern Andes in South America...
2017: PeerJ
https://www.readbyqxmd.com/read/28974932/movement-complexity-and-neuromechanical-factors-affect-the-entropic-half-life-of-myoelectric-signals
#12
Emma F Hodson-Tole, James M Wakeling
Appropriate neuromuscular functioning is essential for survival and features underpinning motor control are present in myoelectric signals recorded from skeletal muscles. One approach to quantify control processes related to function is to assess signal variability using measures such as Sample Entropy. Here we developed a theoretical framework to simulate the effect of variability in burst duration, activation duty cycle, and intensity on the Entropic Half-Life (EnHL) in myoelectric signals. EnHLs were predicted to be <40 ms, and to vary with fluctuations in myoelectric signal amplitude and activation duty cycle...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28973923/motor-origin-of-temporal-predictions-in-auditory-attention
#13
Benjamin Morillon, Sylvain Baillet
In behavior, action and perception are inherently interdependent. However, the actual mechanistic contributions of the motor system to sensory processing are unknown. We present neurophysiological evidence that the motor system is involved in predictive timing, a brain function that aligns temporal fluctuations of attention with the timing of events in a task-relevant stream, thus facilitating sensory selection and optimizing behavior. In a magnetoencephalography experiment involving auditory temporal attention, participants had to disentangle two streams of sound on the unique basis of endogenous temporal cues...
October 2, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28971006/dysfunctional-gaze-processing-in-bipolar-disorder
#14
Cristina Berchio, Camille Piguet, Christoph M Michel, Paolo Cordera, Tonia A Rihs, Alexandre G Dayer, Jean-Michel Aubry
Gaze conveys emotional information, and humans present sensitivity to its direction from the earliest days of life. Bipolar disorder is a disease characterized by fluctuating states of emotional and cognitive dysregulation. To explore the role of attentional control on face processing in bipolar patients (BP) we used gaze direction as an emotion modulation parameter in a two-back Working Memory (WM) task while high-density EEG data were acquired. Since gaze direction influences emotional attributions to faces with neutral expressions as well, we presented neutral faces with direct and averted gaze...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28969437/dynamic-functional-connectivity-states-between-the-dorsal-and-ventral-sensorimotor-networks-revealed-by-dynamic-conditional-correlation-analysis-of-resting-state-functional-mri
#15
Maleeha Fatima Syed, Martin Lindquist, Jay J Pillai, Shruti Agarwal, Sachin K Gujar, Ann S Choe, Brian S Caffo, Haris I Sair
Functional connectivity in resting state functional Magnetic Resonance Imaging (rs-fMRI) has received substantial attention since the initial findings of Biswal et al. Traditional network correlation metrics assume that the functional connectivity in the brain remains stationary over time. However, recent studies have shown that robust temporal fluctuations of functional connectivity among as well as within functional networks exist, challenging this assumption. In this study, these dynamic correlation differences were investigated between the dorsal and ventral sensorimotor networks by applying the Dynamic Conditional Correlation (DCC) model to rs-fMRI data of 20 healthy subjects...
October 2, 2017: Brain Connectivity
https://www.readbyqxmd.com/read/28966084/precursor-processes-of-human-self-initiated-action
#16
Nima Khalighinejad, Aaron Schurger, Andrea Desantis, Leor Zmigrod, Patrick Haggard
A gradual buildup of electrical potential over motor areas precedes self-initiated movements. Recently, such "readiness potentials" (RPs) were attributed to stochastic fluctuations in neural activity. We developed a new experimental paradigm that operationalized self-initiated actions as endogenous 'skip' responses while waiting for target stimuli in a perceptual decision task. We compared these to a block of trials where participants could not choose when to skip, but were instead instructed to skip. Frequency and timing of motor action were therefore balanced across blocks, so that conditions differed only in how the timing of skip decisions was generated...
September 28, 2017: NeuroImage
https://www.readbyqxmd.com/read/28964079/measuring-vocal-motor-skill-with-a-virtual-voice-controlled-slingshot
#17
Jarrad H Van Stan, Se-Woong Park, Matthew Jarvis, Daryush D Mehta, Robert E Hillman, Dagmar Sternad
Successful voice training (e.g., singing lessons) and vocal rehabilitation (e.g., therapy for a voice disorder) involve learning complex, vocal behaviors. However, there are no metrics describing how humans learn new vocal skills or predicting how long the improved behavior will persist post-therapy. To develop measures capable of describing and predicting vocal motor learning, a theory-based paradigm from limb motor control inspired the development of a virtual task where subjects throw projectiles at a target via modifications in vocal pitch and loudness...
September 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28963889/a-holter-for-parkinson-s-disease-validation-of-the-ability-to-detect-on-off-states-using-the-rempark-system
#18
Àngels Bayés, Albert Samá, Anna Prats, Carlos Pérez-López, Maricruz Crespo-Maraver, Juan Manuel Moreno, Sheila Alcaine, Alejandro Rodriguez-Molinero, Berta Mestre, Paola Quispe, Ana Correia de Barros, Rui Castro, Alberto Costa, Roberta Annicchiarico, Patrick Browne, Tim Counihan, Hadas Lewy, Gabriel Vainstein, Leo R Quinlan, Dean Sweeney, Gearóid ÓLaighin, Jordi Rovira, Daniel Rodrigue Z-Martin, Joan Cabestany
The treatment of Parkinson's disease (PD) with levodopa is very effective. However, over time, motor complications (MCs) appear, restricting the patient from leading a normal life. One of the most disabling MCs is ON-OFF fluctuations. Gathering accurate information about the clinical status of the patient is essential for planning treatment and assessing its effect. Systems such as the REMPARK system, capable of accurately and reliably monitoring ON-OFF fluctuations, are of great interest. OBJECTIVE: To analyze the ability of the REMPARK System to detect ON-OFF fluctuations...
September 25, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28960543/pedunculopontine-nucleus-deep-brain-stimulation-in-parkinson-s-disease-a-clinical-review
#19
REVIEW
Wesley Thevathasan, Bettina Debu, Tipu Aziz, Bastiaan R Bloem, Christian Blahak, Christopher Butson, Virginie Czernecki, Thomas Foltynie, Valerie Fraix, David Grabli, Carole Joint, Andres M Lozano, Michael S Okun, Jill Ostrem, Nicola Pavese, Christoph Schrader, Chun-Hwei Tai, Joachim K Krauss, Elena Moro
Pedunculopontine nucleus region deep brain stimulation (DBS) is a promising but experimental therapy for axial motor deficits in Parkinson's disease (PD), particularly gait freezing and falls. Here, we summarise the clinical application and outcomes reported during the past 10 years. The published dataset is limited, comprising fewer than 100 cases. Furthermore, there is great variability in clinical methodology between and within surgical centers. The most common indication has been severe medication refractory gait freezing (often associated with postural instability)...
September 28, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28957737/interplay-of-upper-and-lower-motor-neuron-degeneration-in-amyotrophic-lateral-sclerosis
#20
Mamede de Carvalho, Artiom Poliakov, Cristiano Tavares, Michael Swash
OBJECTIVE: We studied motor unit recruitment to test a new method to identify motor unit firing rate (FR) variability. METHODS: We studied 68 ALS patients, with and without upper neuron signs (UMN) in lower limbs, 24 patients with primary lateral sclerosis (PLS), 13 patients with spinal cord lesion and 39 normal subjects. All recordings were made from tibialis anterior muscles of normal strength. Subjects performed a very slight contraction in order to activate 2 motor units in each recording...
September 19, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
keyword
keyword
8863
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"