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https://www.readbyqxmd.com/read/28645972/does-non-invasive-brain-stimulation-modify-hand-dexterity-protocol-for-a-systematic-review-and-meta-analysis
#1
Anthony Terrence O'Brien, Gabriel Torrealba Acosta, Rodrigo Huerta, Aurore Thibaut
INTRODUCTION: Dexterity is described as coordinated hand and finger movement for precision tasks. It is essential for day-to-day activities like computer use, writing or buttoning a shirt. Integrity of brain motor networks is crucial to properly execute these fine hand tasks. When these networks are damaged, interventions to enhance recovery are frequently accompanied by unwanted side effects or limited in their effect. Non-invasive brain stimulation (NIBS) are postulated to target affected motor areas and improve hand motor function with few side effects...
June 22, 2017: BMJ Open
https://www.readbyqxmd.com/read/28637819/long-interval-intracortical-inhibition-is-asymmetric-in-young-but-not-older-adults
#2
Ann-Maree Vallence, Elizabeth Smalley, Peter Drummond, Geoff Hammond
Aging is typically accompanied by a decline in manual dexterity and handedness; the dominant hand executes tasks of manual dexterity more quickly and accurately than the non-dominant hand in younger adults, but this advantage typically declines with age. Age-related changes in intracortical inhibitory processes might play a role in the age-related decline in manual dexterity. Long interval intracortical inhibition (LICI) is asymmetric in young adults, with more sensitive and more powerful LICI circuits in the dominant hemisphere than the non-dominant hemisphere...
June 21, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28635403/psychomotor-skills-assessment-by-motion-analysis-in-minimally-invasive-surgery-on-an-animal-organ
#3
Erlend Fagertun Hofstad, Cecilie Våpenstad, Lars Eirik Bø, Thomas Langø, Esther Kuhry, Ronald Mårvik
BACKGROUND: A high level of psychomotor skills is required to perform minimally invasive surgery (MIS) safely. To be able to measure these skills is important in the assessment of surgeons, as it enables constructive feedback during training. The aim of this study was to test the validity of an objective and automatic assessment method using motion analysis during a laparoscopic procedure on an animal organ. MATERIAL AND METHODS: Experienced surgeons in laparoscopy (experts) and medical students (novices) performed a cholecystectomy on a porcine liver box model...
February 8, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28630754/nerve-injuries-of-the-upper-extremity-and-hand
#4
Lars B Dahlin, Mikael Wiberg
A nerve injury has a profound impact on the patient's daily life due to the impaired sensory and motor function, impaired dexterity, sensitivity to cold as well as eventual pain problems.To perform an appropriate treatment of nerve injuries, a correct diagnosis must be made, where the injury is properly classified, leading to an optimal surgical approach and technique, where timing of surgery is also important for the outcome.Knowledge about the nerve regeneration process, where delicate processes occur in neurons, non-neuronal cells (i...
May 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28629845/role-of-primary-motor-cortex-in-the-control-of-manual-dexterity-assessed-via-sequential-bilateral-lesion-in-the-adult-macaque-monkey-a-case-study
#5
Julie Savidan, Mélanie Kaeser, Abderraouf Belhaj-Saïf, Eric Schmidlin, Eric M Rouiller
From a case study, we describe the impact of unilateral lesion of the hand area in the primary motor cortex (M1) on manual dexterity and the role of the intact contralesional M1 in long-term functional recovery. An adult macaque monkey performed two manual dexterity tasks: (i) "modified Brinkman board" task, assessed simple precision grip versus complex precision grip, the latter involved a hand postural adjustment; (ii) "modified Klüver board" task, assessed movements ranging from power grip to precision grip, pre-shaping and grasping...
June 17, 2017: Neuroscience
https://www.readbyqxmd.com/read/28626328/differences-in-attention-hand-dexterity-and-lower-extremity-activities-in-the-presence-or-absence-of-a-time-limit
#6
Hyo-Lyun Roh
[Purpose] The purpose of this study was to investigate how a time limit affects day-to-day tasks such as attention, hand dexterity, and sit to standing and sitting activity. The grounds for using a time limit as a method of learning tasks related to daily living are examined based on the results of this investigation. [Subjects and Methods] The subjects consisted of 51 healthy college students (20 males and 31 females). The task performance time for SESSION 1, in which there was no time limit, was measured and the task duration privately recorded...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28605738/spatial-neglect-predicts-upper-limb-use-in-the-activities-of-daily-living
#7
Tim Vanbellingen, Beatrice Ottiger, Noortje Maaijwee, Tobias Pflugshaupt, Stephan Bohlhalter, René M Müri, Tobias Nef, Dario Cazzoli, Thomas Nyffeler
BACKGROUND AND PURPOSE: Motor tests performed at stroke onset have been shown to predict the recovery of upper limb motor impairment. Less is known about upper limb recovery at the level of functional activity or of participation and how spatial neglect may influence the integration of the upper limb in the activities of daily living (ADL). Our objective was to investigate whether the initial severity of spatial neglect may predict upper limb use in ADL. METHODS: Eighty-two patients with a right-hemispheric stroke (RHS) were prospectively included in the study...
June 13, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28604171/abnormal-eeg-responses-to-tms-during-the-cortical-silent-period-are-associated-with-hand-function-in-chronic-stroke
#8
Whitney A Gray, Jacqueline A Palmer, Steven L Wolf, Michael R Borich
BACKGROUND: Abnormal brain excitability influences recovery after stroke at which time a prolonged transcranial magnetic stimulation (TMS)-induced electromyographic silent period is thought to reflect abnormal inhibitory interneuron excitability. Cortical excitability can be probed directly during the silent period using concurrent electroencephalography (EEG) of TMS-evoked responses. OBJECTIVE: The primary study objectives were to characterize TMS-evoked cortical potentials (TEPs) using EEG and to investigate associations with persistent hand and arm motor dysfunction in individuals with chronic stroke...
June 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28603509/emerging-trends-in-the-multimodal-nature-of-cognition-touch-and-handedness
#9
REVIEW
Miriam Ittyerah
Advances in tactile cognition and haptics have increased our understanding of the multimodal nature of touch. Haptic data is mostly confined to human performance arising from the flexibility and dexterity of the fingers used to discriminate shapes and objects. Studies with infants indicate that recognition of objects either seen or held in the hand is possible during early periods of infancy. Evidence indicates performance differences between the hands decrease over periods of development, reflecting maturation of the cortical brain system supporting motor skills...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28594769/four-cases-of-parkinson-disease-diagnosed-during-the-postpartum-period
#10
David Maltête, Lou Grangeon, Floriane Le Goff, Gulden Ozel, Damien Fetter, Patrick Ahtoy, Olivier Temgoua, Audrey Rouillé, Romain Lefaucheur
BACKGROUND: There is little experience with the effect of pregnancy on Parkinson disease because the number of women with Parkinson disease who are of childbearing age is small. We report four cases beginning during the postpartum period and discuss the potential contribution of different factors that may influence the occurrence of Parkinson disease in this time period. CASES: Four women aged 29-35 years developed arm tremor, shoulder pain, dizziness, or decreased dexterity of the hand in the first few days or months after childbirth...
June 6, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28583476/dexterity-a-matlab-based-analysis-software-suite-for-processing-and-visualizing-data-from-tasks-that-measure-arm-or-forelimb-function
#11
Samuel D Butensky, Andrew P Sloan, Eric Meyers, Jason B Carmel
BACKGROUND: Hand function is critical for independence, and neurological injury often impairs dexterity. To measure hand function in people or forelimb function in animals, sensors are employed to quantify manipulation. These sensors make assessment easier and more quantitative and allow automation of these tasks. While automated tasks improve objectivity and throughput, they also produce large amounts of data that can be burdensome to analyze. We created software called Dexterity that simplifies data analysis of automated reaching tasks...
June 3, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28578819/home-based-training-for-dexterity-in-parkinson-s-disease-a-randomized-controlled-trial
#12
Tim Vanbellingen, Thomas Nyffeler, Julia Nigg, Jorina Janssens, Johanna Hoppe, Tobias Nef, René M Müri, Erwin E H van Wegen, Gert Kwakkel, Stephan Bohlhalter
BACKGROUND: Patients with Parkinson's disease exhibit disturbed manual dexterity. This impairment leads to difficulties in activities of daily living, such as buttoning a shirt or hand-writing. The aim of the present study was to investigate the effectiveness of a home-based dexterity program on fine motor skills in a single-blinded, randomized controlled trial, in patients with Parkinson's disease. METHODS: One hundred and three patients with Parkinson's disease (aged between 48 and 80 years, Hoehn & Yahr stage I-IV) were randomized to either a home-based dexterity program (HOMEDEXT) or Thera-band program...
May 25, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28567537/hiv-1-associated-neurocognitive-disorder-epidemiology-pathogenesis-diagnosis-and-treatment
#13
REVIEW
Christian Eggers, Gabriele Arendt, Katrin Hahn, Ingo W Husstedt, Matthias Maschke, Eva Neuen-Jacob, Mark Obermann, Thorsten Rosenkranz, Eva Schielke, Elmar Straube
The modern antiretroviral treatment of human immunodeficiency virus (HIV-1) infection has considerably lowered the incidence of opportunistic infections. With the exception of the most severe dementia manifestations, the incidence and prevalence of HIV-associated neurocognitive disorders (HAND) have not decreased, and HAND continues to be relevant in daily clinical practice. Now, HAND occurs in earlier stages of HIV infection, and the clinical course differs from that before the widespread use of combination antiretroviral treatment (cART)...
May 31, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28562617/taxonomy-based-analysis-of-force-exchanges-during-object-grasping-and-manipulation
#14
Sandra Martin-Brevet, Nathanaël Jarrassé, Etienne Burdet, Agnès Roby-Brami
The flexibility of the human hand in object manipulation is essential for daily life activities, but remains relatively little explored with quantitative methods. On the one hand, recent taxonomies describe qualitatively the classes of hand postures for object grasping and manipulation. On the other hand, the quantitative analysis of hand function has been generally restricted to precision grip (with thumb and index opposition) during lifting tasks. The aim of the present study is to fill the gap between these two kinds of descriptions, by investigating quantitatively the forces exerted by the hand on an instrumented object in a set of representative manipulation tasks...
2017: PloS One
https://www.readbyqxmd.com/read/28552418/determining-the-effect-of-external-stressors-on-laparoscopic-skills-and-performance-between-obstetrics-and-gynecology-residents
#15
Gaby N Moawad, Paul Tyan, Dipti Kumar, Jill Krapf, Cherie Marfori, Elias D Abi Khalil, James Robinson
STUDY OBJECTIVE: To evaluate the effect of stress on laparoscopic skills between obstetrics and gynecology residents. DESIGN: Observational prospective cohort study. DESIGN CLASSIFICATION: Prospective cohort. SETTING: Urban teaching university hospital. PARTICIPANTS (PATIENTS): Thirty-one obstetrics and gynecology residents, postgraduate years 1 to 4. INTERVENTION: We assessed 4 basic laparoscopic skills at 2 sessions...
May 25, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28549364/-an-option-to-restore-ulnar-intrinsic-muscles-when-the-anterior-interosseus-nerve-is-not-available
#16
G A González-Trevizo
BACKGROUND: The peripheral nerve injuries are devastating for the patient; the classic reconstructive options are the Nerve Graft and Tendon Transfers. Lately the Nerve Transfers are being used more and more broadly. They are an excellent option on early injuries and when the motor plate is still alive. The advantages are numerous, because the functional recovery is much better. METHODS AND RESULTS: We report the case of a patient who sustained and injury on the median and ulnar nerve, so the EDQ and ECU branches were used to restore the Ulnar Intrinsic Function...
November 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28549131/a-novel-cortical-target-to-enhance-hand-motor-output-in-humans-with-spinal-cord-injury
#17
Jinyi Long, Paolo Federico, Monica A Perez
A main goal of rehabilitation strategies in humans with spinal cord injury is to strengthen transmission in spared neural networks. Although neuromodulatory strategies have targeted different sites within the central nervous system to restore motor function following spinal cord injury, the role of cortical targets remain poorly understood. Here, we use 180 pairs of transcranial magnetic stimulation for ∼30 min over the hand representation of the motor cortex at an interstimulus interval mimicking the rhythmicity of descending late indirect (I) waves in corticospinal neurons (4...
June 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28548032/impact-of-age-sex-socioeconomic-status-and-physical-activity-on-associated-movements-and-motor-speed-in-preschool-children
#18
Tanja H Kakebeeke, Annina E Zysset, Nadine Messerli-Bürgy, Aziz Chaouch, Kerstin Stülb, Claudia S Leeger-Aschmann, Einat A Schmutz, Amar Arhab, Valentin Rousson, Susi Kriemler, Simone Munsch, Jardena J Puder, Oskar G Jenni
INTRODUCTION: Young children generally show contralateral associated movements (CAMs) when they are making an effort to perform a unimanual task. CAM and motor speed are two relevant aspects of motor proficiency in young children. These CAMs decrease over age, while motor speed increases. As both CAM and motor speed are associated with age, we were interested in whether these two parameters are also linked with each other. METHOD: In this study, three manual dexterity tasks with the dominant and nondominant hands (pegboard, repetitive hand, and repetitive finger tasks) were used to investigate the effect of covariates (age, sex, socioeconomic status, total physical activity) on both motor speed and CAMs in preschool children...
May 26, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28540014/toward-the-art-of-robotic-assisted-vitreoretinal-surgery
#19
Amir Molaei, Ebrahim Abedloo, Marc D de Smet, Sare Safi, Milad Khorshidifar, Hamid Ahmadieh, Mohammad Azam Khosravi, Narsis Daftarian
New technological progress in robotics has brought many beneficial clinical applications. Currently, computer integrated robotic surgery has gained clinical acceptance for several surgical procedures. Robotically assisted eye surgery is envisaged as a promising solution to overcome the shortcomings inherent to conventional surgical procedures as in vitreoretinal surgeries. Robotics by its high precision and fine mechanical control can improve dexterity, cancel tremor, and allow highly precise remote surgical capability, delicate vitreoretinal manipulation capabilities...
April 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28533593/effects-of-repeated-vibratory-stimulation-of-wrist-and-elbow-flexors-on-hand-dexterity-strength-and-sensory-function-in-patients-with-chronic-stroke-a-pilot-study
#20
Won-Ho Choi
[Purpose] The aim of this study was to investigate the effects of repeated vibratory stimulation to muscles related to hand functions on dexterity, strength, and sensory function in patients with chronic stroke. [Subjects and Methods] A total of 10 stroke patients with hemiplegia participated in this study. They were divided into two groups: a) Experimental and b) Control, with five randomly selected subjects for each group. The experimental group received vibratory stimulation, while the control group received the traditional physical therapy...
April 2017: Journal of Physical Therapy Science
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