10,593 results match your criteria motor block


Intelligent vibration signal denoising method based on non-local fully convolutional neural network for rolling bearings.

ISA Trans 2021 Apr 25. Epub 2021 Apr 25.

Glasgow College, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Convolutional neural networks (CNNs) have been widely applied to machinery health management in recent years, whereas research on data-driven denoising methods is relatively limited. Therefore, this paper proposes a robust denoising method based on a non-local fully convolutional neural network (NL-FCNN). In this neural network, the Leaky-ReLU activation function is employed to maintain the information contained in the negative value of the signal. Read More

View Article and Full-Text PDF

Repeated infusion of mesenchymal stem cells maintain the condition to inhibit deteriorated motor function, leading to an extended lifespan in the SOD1G93A rat model of amyotrophic lateral sclerosis.

Mol Brain 2021 May 7;14(1):76. Epub 2021 May 7.

Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, 060-8556, Japan.

Amyotrophic lateral sclerosis (ALS) is a neurodegenerative fatal disorder in which motor neurons within the brain and spinal cord degenerate. A single infusion of mesenchymal stem cells (MSCs) delays disease progression by protecting motor neurons and restoring the blood-spinal cord barrier in the SOD1G93A transgenic ALS rat model. However, the therapeutic effect of a single infusion of MSCs is transient and does not block disease progression. Read More

View Article and Full-Text PDF

Somatosensory versus cerebellar contributions to proprioceptive changes associated with motor skill learning: A theta burst stimulation study.

Cortex 2021 Apr 15;140:98-109. Epub 2021 Apr 15.

Program in Neuroscience, Indiana University, Bloomington, IN, USA; Department of Kinesiology, Indiana University, Bloomington, IN, USA. Electronic address:

Background: It is well established that proprioception (position sense) is important for motor control, yet its role in motor learning and associated plasticity is not well understood. We previously demonstrated that motor skill learning is associated with enhanced proprioception and changes in sensorimotor neurophysiology. However, the neural substrates mediating these effects are unclear. Read More

View Article and Full-Text PDF

Percutaneous Cryoneurolysis for Acute Pain Management: Current Status and Future Prospects.

Expert Rev Med Devices 2021 May 7. Epub 2021 May 7.

University of California San Diego, Department of Anesthesiology, San Diego, California.

Introduction: Conventional nerve blocks utilize local anesthetic drugs to provide pain relief for hours or days following surgery or trauma. However, postoperative and trauma pain can last weeks or months. Ultrasound-guided percutaneous cryoneurolysis is an anesthetic modality that offers substantially longer pain relief compared to local anesthetic-based nerve blocks. Read More

View Article and Full-Text PDF

Suppression of neuropathic pain and comorbidities by recurrent cycles of repetitive transcranial direct current motor cortex stimulation in mice.

Sci Rep 2021 May 6;11(1):9735. Epub 2021 May 6.

Institute of Pharmacology, Medical Faculty Heidelberg, Heidelberg University, Im Neuenheimer Feld 366, 69120, Heidelberg, Germany.

Transcranial, minimally-invasive stimulation of the primary motor cortex (M1) has recently emerged to show promise in treating clinically refractory neuropathic pain. However, there is a major need for improving efficacy, reducing variability and understanding mechanisms. Rodent models hold promise in helping to overcome these obstacles. Read More

View Article and Full-Text PDF

Utilization of epidural volume extension technique for external cephalic version.

Proc (Bayl Univ Med Cent) 2021 Feb 2;34(3):422-423. Epub 2021 Feb 2.

Department of Anesthesiology and Perioperative Medicine, The University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.

External cephalic version (ECV) has been successfully utilized to reduce breech presentations at term and offers an alternative to elective cesarean delivery. Unfortunately, there is not a consensus on which type of regional anesthesia conveys the highest chances for a successful ECV. This case report describes the use of the epidural volume extension technique to provide surgical anesthesia for ECV with a reduced dose of local anesthetic, with the goals of minimizing motor block and hypotension in the setting of an outpatient procedure. Read More

View Article and Full-Text PDF
February 2021

Cerebrospinal fluid and serum interleukins 6 and 8 during the acute and recovery phase in COVID-19 neuropathies patients.

J Med Virol 2021 May 5. Epub 2021 May 5.

Rehabilitation Unit, Maggiore City Hospital Department of Medicine, Surgery and Health Sciences, ASUGI, 34149, Trieste, Italy.

This case series describes three patients affected by SARS-CoV-2 who developed polyradiculoneuritis as a probable neurological complication of COVID-19. A diagnosis of Guillain Barré syndrome was made on the basis of clinical symptoms, cerebrospinal fluid analysis and electroneurography (ENG). In all of them therapeutic approach included the administration of intravenous immunoglobulin (0. Read More

View Article and Full-Text PDF

N-Acetylcysteine Ameliorates Neurotoxic Effects of Manganese Intoxication in Rats: A Biochemical and Behavioral Study.

Neurochem Res 2021 May 5. Epub 2021 May 5.

Department of Biophysics, Basic Medical Sciences Block II, Panjab University, Chandigarh, 160014, India.

Clinical and experimental evidences reveal that excess exposure to manganese is neurotoxic and leads to cellular damage. However, the mechanism underlying manganese neurotoxicity remains poorly understood but oxidative stress has been implicated to be one of the key pathophysiological features related to it. The present study investigates the effects associated with manganese induced toxicity in rats and further to combat these alterations with a well-known antioxidant N-acetylcysteine which is being used in mitigating the damage by its radical scavenging activity. Read More

View Article and Full-Text PDF

Main control factors affecting mechanical oil recovery efficiency in complex blocks identified using the improved k-means algorithm.

PLoS One 2021 4;16(5):e0248840. Epub 2021 May 4.

School of Mechanics Science & Engineering, Northeast Petroleum University, Daqing, Heilongjiang, China.

The system efficiency of pumping units in the middle and late stages of oil recovery is characterized by several factors, complex data and poor regulation. Further, the main control factors that affect system efficiency in different blocks vary greatly; therefore, it is necessary to obtain the block characteristics to effectively improve system efficiency. The k-means algorithm is simple and efficient, but it assumes that all factors have the same amount of influence on the output value. Read More

View Article and Full-Text PDF

The Effect of High-Frequency Repetitive Transcranial Magnetic Stimulation on Functional Indices of Affected Upper Limb in Patients with Subacute Stroke.

J Biomed Phys Eng 2021 Apr 1;11(2):175-184. Epub 2021 Apr 1.

PhD, Department of Physiotherapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.

Background: Repetitive transcranial magnetic stimulation (rTMS) is a novel technique that may improve recovery in patients with stoke, but the role of rTMS as an applied and practical treatment modality for stroke rehabilitation has not been established yet.

Objective: This study was conducted to determine the effects of a rehabilitation program (RP) in conjunction with rTMS on functional indices of the paretic upper limb in the subacute phase of stroke.

Material And Methods: In this experimental study, twenty patients in the subacute phase of stroke were randomly assigned into two groups: The high frequency rTMS (HF-rTMS) in conjunction with RP (experimental group), and the RP group (control group). Read More

View Article and Full-Text PDF

Hemodynamic Signal Changes During Motor Imagery Task Performance Are Associated With the Degree of Motor Task Learning.

Front Hum Neurosci 2021 15;15:603069. Epub 2021 Apr 15.

Department of Health Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.

Purpose: This study aimed to investigate whether oxygenated hemoglobin (oxy-Hb) generated during a motor imagery (MI) task is associated with the motor learning level of the task.

Methods: We included 16 right-handed healthy participants who were trained to perform a ball rotation (BR) task. Hemodynamic brain activity was measured using near-infrared spectroscopy to monitor changes in oxy-Hb concentration during the BR MI task. Read More

View Article and Full-Text PDF

Dexmedetomidine versus sufentanil as adjuvants to bupivacaine for brachial plexus block during upper extremity surgery: a randomized clinical trial.

Braz J Anesthesiol 2021 Apr 28. Epub 2021 Apr 28.

AJA University of Medical Sciences, Department of Anesthesiology, Tehran, Iran. Electronic address:

Background: Brachial plexus block (BPB) has been accepted as a reliable alternative for general anesthesia in upper limb surgeries. Adding adjuvant drugs like dexmedetomidine and sufentanil has been shown to have clinical and pharmacologic advantages. In this randomized parallel clinical trial, we aim to compare the effects of these two adjuvants for bupivacaine in BPB. Read More

View Article and Full-Text PDF

Effect of Traditional plus Virtual Reality Rehabilitation on Prognosis of Stroke Survivors: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

Am J Phys Med Rehabil 2021 Apr 28. Epub 2021 Apr 28.

Department of Pharmacy, Fujian Medical University Union Hospital, Fuzhou, China College of Pharmacy, Fujian Medical University, Fuzhou, China.

Objective: Virtual reality (VR) technology has begun to be gradually applied to clinical stroke rehabilitation. The study aims to evaluate the effect of traditional plus VR rehabilitation on motor function recovery, balance, and activities of daily living in stroke patients.

Method: Studies published in English prior to October 2020 were retrieved from PubMed, EMBASE, Web of Science, and the Cochrane Library. Read More

View Article and Full-Text PDF

The Effect of Attentional Direction on Sub-Stages of Preparing for Motor Skill Execution Across Practice.

Percept Mot Skills 2021 Jun;128(3):1292-1309

Department of Sport and Health Sciences, Technische Universität München, Germany.

While several empirical studies using dual-task methodology have examined the effect of attentional direction on motor skill execution; few have studied the effect of attentional direction on just the preparation phase of motor practice. In this study, via a keying sequence paradigm, we explored processing stages of preparation for a motor skill and disentangled the effect of attentional direction on various stages across practice. First, participants learned two keying sequences (three versus six keys). Read More

View Article and Full-Text PDF

The Effect of Dexmedetomidine in Combination with Bupivacaine on Sensory and Motor Block Time and Pain Score in Supraclavicular Block.

Pain Res Manag 2021 10;2021:8858312. Epub 2021 Apr 10.

Department of Anesthesiology, Urmia Imam Khomeini Hospital, Urmia University of Medical Science, Urmia, Iran.

Background: Brachial plexus block is frequently recommended for upper limb surgeries. Many drugs have been used as adjuvants to prolong the duration of the block. This study aimed to assess the effect of dexmedetomidine with bupivacaine combination and only bupivacaine on sensory and motor block duration time, pain score, and hemodynamic variations in the supraclavicular block in upper extremity orthopedic surgery. Read More

View Article and Full-Text PDF

Vincristine-Induced Peripheral Neuropathy (VIPN) in Pediatric Tumors: Mechanisms, Risk Factors, Strategies of Prevention and Treatment.

Int J Mol Sci 2021 Apr 16;22(8). Epub 2021 Apr 16.

Pediatric Oncology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica Sacro Cuore, 00168 Rome, Italy.

Vincristine-induced peripheral neurotoxicity (VIPN) is a very common side effect of vincristine chemotherapy among pediatric patients with cancer. Neuropathy may be sensory, motor and/or autonomic, with consequent reduction, delay or discontinuation of vincristine-chemotherapy, but also pain, disability, reduced quality of life of patients and an increase in medical costs. Vincristine acts out its antineoplastic function by altering the normal assembly and disassembly of microtubules, with their consequent mitosis block and death. Read More

View Article and Full-Text PDF

The impact of IPACK combined with adductor canal block under ultrasound guidance on early motor function after total knee arthroplasty.

Braz J Anesthesiol 2021 Apr 26. Epub 2021 Apr 26.

The Affiliated Hospital of Qingdao University, Department of Anesthesiology, Qingdao, China.

Background: This study aimed to evaluate the impact of Infiltration between the Popliteal Artery and Capsule of the posterior Knee (IPACK) combined with an adductor canal block under the guidance of ultrasound on early motor function after Total Knee Arthroplasty (TKA).

Methods: A sample of 60 cases who were scheduled for elective unilateral TKA were divided into two groups using random number table method: a group with IPACK combined with an adductor canal block (I group, n = 30), and a group with femoral nerve block combined with superior popliteal sciatic nerve block (FS group, n = 30). Before anesthesia induction was completed, the patients in I group received an ultrasound-guided adductor canal block with 15 mL of 0. Read More

View Article and Full-Text PDF

Location of motor branches of tibialis posterior muscle and its relation in treatment of spastic equinovarus foot: a cadaveric study.

Braz J Anesthesiol 2021 Apr 26. Epub 2021 Apr 26.

Hospital of Qingdao University, Department of Obstetrics, Qingdao, China. Electronic address:

Background And Objectives: Nerve block or neurolysis is an important approach in the treatment of spastic equinovarus foot. To illustrate the accurate location of the nerve branch to the tibialis posterior muscle (TP) in clinical practice, 21 adult cadavers were dissected and 14 complete both lower limb specimens were obtained. A total of 28 lower limbs were included. Read More

View Article and Full-Text PDF

Lateral Sagittal Versus Costoclavicular Approaches for Ultrasound-Guided Infraclavicular Brachial Plexus Block: A Comparison of Block Dynamics Through A Randomized Clinical Trial.

Cureus 2021 Mar 26;13(3):e14129. Epub 2021 Mar 26.

Anesthesiology and Reanimation, Ondokuz Mayis University, Samsun, TUR.

Introduction In this study, our objective was to compare the lateral sagittal infraclavicular block (LS-ICB) with the costoclavicular infraclavicular block (CC-ICB) for ultrasound (US)-guided infraclavicular brachial plexus block in terms of block dynamics as well as patient and surgeon satisfaction levels. Methods A total of 100 patients, falling under the American Society of Anaesthesiologists (ASA) I-III categories, who were aged 18-65 years and scheduled for elective forearm and hand surgery were enrolled in the study. The patients were randomly allocated to receive a US-guided LS-ICB or US‑guided CC-ICB. Read More

View Article and Full-Text PDF

A randomised clinical trial comparing 35 Hz versus 50 Hz frequency stimulation effects on hand motor recovery in older adults after stroke.

Sci Rep 2021 Apr 28;11(1):9131. Epub 2021 Apr 28.

Physical Medicine and Rehabilitation Service, Doctor Peset University Hospital, 46017, Valencia, Spain.

More solid data are needed regarding the application of neuromuscular electrical stimulation (NMES) in the paretic hand following a stroke. A randomised clinical trial was conducted to compare the effects of two NMES protocols with different stimulation frequencies on upper limb motor impairment and function in older adults with spastic hemiparesis after stroke. Sixty nine outpatients were randomly assigned to the control group or the experimental groups (NMES with 50 Hz or 35 Hz). Read More

View Article and Full-Text PDF

Assessing and defining explicit processes in visuomotor adaptation.

Exp Brain Res 2021 Apr 28. Epub 2021 Apr 28.

Sensorimotor Control Laboratory, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.

The Process Dissociation Procedure (PDP) and Verbal Report Framework (VRF) reveal that both explicit (conscious) and implicit (unconscious) processes contribute to visuomotor adaptation. We looked to determine whether these two assessment methods establish similar processes underlying visuomotor adaptation by comparing the magnitude of explicit and implicit adaptation over time between the two assessments and to post-experiment assessments of awareness of the visuomotor distortion. Three groups of participants (PDP, VRF, VRF No-Cursor) completed three blocks of reach training in a virtual environment with a cursor rotated 40° clockwise relative to hand motion. Read More

View Article and Full-Text PDF

Transmuscular Quadratus Lumborum Block versus Suprainguinal Fascia Iliaca Block for Hip Arthroplasty: A Randomized, Controlled Pilot Study.

Local Reg Anesth 2021 20;14:67-74. Epub 2021 Apr 20.

Department of Anesthesia and Critical Care Medicine, Faculty of Medicine, Cairo University, Cairo, Egypt.

Background: This study aimed to investigate the analgesic efficacy and motor block profile of single-shot transmuscular quadratus lumborum block (QLB) in comparison with those of suprainguinal fascia iliaca block (FIB) in patients undergoing hip arthroplasty.

Methods: This randomized, double-blinded, controlled trial included adult patients undergoing hip arthroplasty under spinal anesthesia. Patients were allocated to one of two groups according to the regional block received: FIB group (n=19) or QLB group (n=17). Read More

View Article and Full-Text PDF

Effects of tactile stimulation on the sensory, motor and cognitive function in people with multiple sclerosis.

Clin Neurol Neurosurg 2021 Apr 20;205:106643. Epub 2021 Apr 20.

Physiology-pharmacology Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran; Department of Physiology and Pharmacology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. Electronic address:

Objective: Multiple sclerosis (MS) is a chronic inflammatory neurodegenerative disease that causes demyelination in the brain and spinal cord. Repetitive sensory stimulation (RSS) can enhance sensory perception and motor function, improve inappropriate synaptic connections and adaptable malformations, and increase cognitive function. The purpose of this study was to specify the effect of RSS on the sensory, motor, and cognitive function in people with MS. Read More

View Article and Full-Text PDF

Effect of combined versus sequential injection of 2% lidocaine and 0.5% bupivacaine on the onset and duration of supraclavicular brachial plexus block: A double blinded randomised controlled trial.

J Clin Anesth 2021 Apr 24;72:110313. Epub 2021 Apr 24.

Department of Anaesthesiology and Critical Care, AIIMS, Jodhpur, India.

Objective: To assess whether sequential (one after the other with a delay of 120 s) or combined (freshly prepared mixture) administration of 2% lidocaine and 0.5% bupivacaine in supraclavicular brachial plexus block (SCBPB) provides faster onset and prolonged duration of block.

Design: Randomised controlled double blinded study. Read More

View Article and Full-Text PDF

Spinal subdural hematoma and subdural anesthesia following combined spinal-epidural anesthesia: a case report.

BMC Anesthesiol 2021 Apr 26;21(1):130. Epub 2021 Apr 26.

Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Sichuan Province, Chengdu, China.

Background: Subdural anesthesia and spinal subdural hematoma are rare complications of combined spinal-epidural anesthesia. We present a patient who developed both after multiple attempts to achieve combined spinal-epidural anesthesia.

Case Presentation: A 21-year-old parturient, gravida 1, para 1, with twin pregnancy at gestational age 34 weeks underwent cesarean delivery. Read More

View Article and Full-Text PDF

ELECTROPHYSIOLOGICAL STUDY OF THE TIBIAL NERVE ACROSS THE TARSAL TUNNEL IN DISTAL SYMMETRIC DIABETIC POLYNEUROPATHY.

Am J Phys Med Rehabil 2021 Apr 14. Epub 2021 Apr 14.

EMG Service, Local Health Unit Toscana Sud Est, Siena, Italy Department of Medical, Surgical and Neurological Sciences, University of Siena, Italy.

Objective: To demonstrate abnormalities of motor conduction of the tibial nerve across the tarsal tunnel (TT) in type 2 diabetes.

Design: 124 consecutive patients (mean age 66.6 years, 62. Read More

View Article and Full-Text PDF

Spatial and Motor Aspects in the "Action-Sentence Compatibility Effect".

Authors:
Alberto Greco

Front Psychol 2021 9;12:647899. Epub 2021 Apr 9.

Department of Educational Sciences, Cognilab, Laboratory of Psychology and Cognitive Sciences, University of Genoa, Genoa, Italy.

The Action-sentence Compatibility Effect (ACE) is often taken as supporting the fundamental role of the motor system in understanding sentences that describe actions. This effect would be related to an internal "simulation," i.e. Read More

View Article and Full-Text PDF

Validity, reliability, and sensitivity to motor impairment severity of a multi-touch app designed to assess hand mobility, coordination, and function after stroke.

J Neuroeng Rehabil 2021 Apr 23;18(1):70. Epub 2021 Apr 23.

UBIC, Departament de Fisioteràpia, Universitat de València, Valencia, Spain.

Background: The assessment of upper-limb motor impairments after stroke is usually performed using clinical scales and tests, which may lack accuracy and specificity and be biased. Although some instruments exist that are capable of evaluating hand functions and grasping during functional tasks, hand mobility and dexterity are generally either not specifically considered during clinical assessments or these examinations lack accuracy. This study aimed to determine the convergent validity, reliability, and sensitivity to impairment severity after a stroke of a dedicated, multi-touch app, named the Hand Assessment Test. Read More

View Article and Full-Text PDF

A randomized comparison between costoclavicular and ultrasound-guided infraclavicular block for upper extremity surgery.

Turk J Med Sci 2021 Apr 23. Epub 2021 Apr 23.

Background: This study compared ultrasound guided costoclavicular (CC) and lateral sagittal infraclavicular (LS) brachial plexus block in patients undergoing upper extremity surgery.

Materials And Methods: 80 patients undergoing upper extremity surgery were randomized two groups: Group CC (costoclavicular (n=40)) or Group LS (lateral sagittal infraclavicular (n=40)). Both groups received a 25 mL containing a mixture of 1% lidocaine and 0. Read More

View Article and Full-Text PDF

Motor and Visual-spatial Cognitive Abilities in Children Treated for Infantile Esotropia.

Percept Mot Skills 2021 Apr 22:315125211011726. Epub 2021 Apr 22.

Department of Developmental Psychology, Justus-Liebig-University Giessen, Gießen, Germany.

While many studies have investigated links between motor and visual spatial cognitive abilities in typically developing children, only a few studies have tested this link among children with innate handicaps. Therefore, we assessed motor abilities (using the M-ABC-2) and visual spatial cognitive skills (using the Block Design subtest of the WPPSI-III and a picture mental rotation task, PRT) of 5-7 year old typically developing children (n= 17) and same-aged children with severe deficits in stereopsis due to infantile esotropia (n= 17). Compared to the typically developing children, children with esotropia showed significantly poorer motor performances, especially in manual dexterity and ball skills, and significantly poorer and slower performance on the visual spatial cognitive tasks. Read More

View Article and Full-Text PDF