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fine motor dexterity

Haemy Lee Masson, Christian Wallraven, Laurent Petit
Previous studies on visuo-haptic shape processing provide evidence that visually learned shape information can transfer to the haptic domain. In particular, recent neuroimaging studies have shown that visually learned novel objects that were haptically tested recruited parts of the ventral pathway from early visual cortex to the temporal lobe. Interestingly, in such tasks considerable individual variation in cross-modal transfer performance was observed. Here, we investigate whether this individual variation may be reflected in microstructural characteristics of white-matter (WM) pathways...
October 3, 2016: Human Brain Mapping
Philippe Dahdal, Antonia Meyer, Chaturvedi Menorca, Karolina Nowak, Anne D Roesch, Peter Fuhr, Ute Gschwandtner
AIMS: The objective of this study was to investigate the relation between impaired fine motor skills in Parkinson disease (PD) patients and their cognitive status, and to determine whether fine motor skills are more impaired in PD patients with mild cognitive impairment (MCI) than in non-MCI patients. METHODS: Twenty PD MCI and 31 PD non-MCI patients (mean age 66.7 years, range 50-84, 36 males/15 females), all right-handed, took part in a motor performance test battery...
September 20, 2016: Dementia and Geriatric Cognitive Disorders
Abigail Thompson, Declan Murphy, Flavio Dell'Acqua, Christine Ecker, Grainne McAlonan, Henrietta Howells, Simon Baron-Cohen, Meng-Chuan Lai, Michael V Lombardo
BACKGROUND: Fine motor skill impairments are common in autism spectrum disorder (ASD), significantly affecting quality of life. Sensory inputs reaching the primary motor cortex (M1) from the somatosensory cortex (S1) are likely involved in fine motor skill and specifically motor learning. However, the role of these connections has not been directly investigated in humans. This study aimed to investigate, for the first time, the role of the S1-M1 connections in healthy subjects in vivo and whether microstructural alterations are associated with motor impairment in ASD...
July 1, 2016: Biological Psychiatry
Tim Vanbellingen, Manuela Wapp, Katharina Stegmayer, Manuel Bertschi, Eugenio Abela, Stefanie Kübel, Thomas Nyffeler, René Müri, Sebastian Walther, Tobias Nef, Mark Hallett, Stephan Bohlhalter
Dorsal pre-motor cortex (PMd) is thought to play a role in fine motor control. The aim of the present study was to investigate whether inhibitory or excitatory stimulation of PMd would have an impact on manual dexterity in Parkinson's disease (PD). Fifteen patients with PD participated in this study. High resolution structural MRI was used for neuro-navigated TBS. Participants were targeted with one train of TBS in three experimental sessions: sham stimulation over vertex, continuous TBS (cTBS) over PMd and intermittent TBS (iTBS) over PMd, respectively...
September 12, 2016: Journal of Neural Transmission
Jonas J de Paula, Maicon R Albuquerque, Guilherme M Lage, Maria A Bicalho, Marco A Romano-Silva, Leandro F Malloy-Diniz
OBJECTIVE: Cognitive impairment is a hallmark of mild cognitive impairment (MCI) and Alzheimer's disease dementia (AD). Although the cognitive profile of these patients and its association with activities of daily living (ADLs) is well documented, few studies have assessed deficits in fine motor dexterity and their association with ADL performance. The objective of this research paper is to evaluate fine motor dexterity performance among MCI and AD patients and to investigate its association with different aspects of ADLs...
July 2016: Revista Brasileira de Psiquiatria
Nimrod Ophir, Nadav Milk, Talia Mayer, Shaul Ravfogel, Nirit Yavnai, Arik Eisenkraft, Tamar Kadar, Michael Kassirer, Yossi Rosman
We aimed to evaluate the performance of medical personnel in using the IB1 topical protective lotion on their hands and wrists together with standard disposable medical gloves, compared to standard-issued medical chemical protective gloves. This randomized cross-over study included 144 medical personnel. Primary endpoints were time-to-completion of autoinjection; success rate, number of attempts, and time-to-achieve successful endotracheal intubation; time-to-achieve satisfactory tube fixation; time-to-draw and inject the content of an ampoule; and the total time-to-perform all medical procedures...
July 7, 2016: American Journal of Emergency Medicine
Suchitporn Lersilp, Supawadee Putthinoi, Kewalin Panyo
Children with Down's syndrome have developmental delays, particularly regarding cognitive and motor development. Fine motor skill problems are related to motor development. They have impact on occupational performances in school-age children with Down's syndrome because they relate to participation in school activities, such as grasping, writing, and carrying out self-care duties. This study aimed to develop a fine motor activities program and to examine the efficiency of the program that promoted fine motor skills in a case study of Down's syndrome...
2016: Global Journal of Health Science
Erin R Wallace, Brent R Collett, Kathleen Kapp-Simon, Jacqueline R Starr, Craig Birgfeld, Matthew L Speltz
OBJECTIVE: Previous studies have shown that infants and young children with single-suture craniosynostosis (SSC) perform more poorly on tests of visuomotor function than children without SSC. However, previous studies are limited by small sample sizes and little is known about the persistence of visuomotor problems into the school-age years. The aim of this study was to compare visuomotor function in children with and without SSC at the beginning of elementary school. METHODS: The study included 179 children with SSC (cases) and 183 children without SSC (controls)...
July 2016: Journal of Developmental and Behavioral Pediatrics: JDBP
Clayton D Hinkle, James N Porter, Eric J Waldron, Hannah Klein, Daniel Tranel, Amy Heffelfinger
OBJECTIVE: Anti-N-methyl-D-aspartate (anti-NMDA) receptor encephalitis is an acute, immune-mediated paraneoplastic syndrome that often presents with psychobehavioral changes, abnormal movements, autonomic instability, seizures, and cognitive dysfunction. While the disease continues to be more readily identified and appropriately treated, the course of cognitive deficits from the acute to post-acute to chronic phase has not been well described, particularly in the pediatric population...
June 13, 2016: Clinical Neuropsychologist
Rodolphe J Gentili, Hyuk Oh, Alissa V Kregling, James A Reggia
The human hand's versatility allows for robust and flexible grasping. To obtain such efficiency, many robotic hands include human biomechanical features such as fingers having their two last joints mechanically coupled. Although such coupling enables human-like grasping, controlling the inverse kinematics of such mechanical systems is challenging. Here we propose a cortical model for fine motor control of a humanoid finger, having its two last joints coupled, that learns the inverse kinematics of the effector...
June 2016: Bioinspiration & Biomimetics
Laurence Vaivre-Douret, Christophe Lalanne, Bernard Golse
BACKGROUND: Developmental Coordination Disorder (DCD) defines a heterogeneous class of children exhibiting marked impairment in motor coordination as a general group of deficits in fine and gross motricity (subtype mixed group) common to all research studies, and with a variety of other motor disorders that have been little investigated. No consensus about symptoms and etiology has been established. METHODS: Data from 58 children aged 6 to 13 years with DCD were collected on DSM-IV criteria, similar to DSM-5 criteria...
2016: Frontiers in Psychology
T Foki, T Vanbellingen, C Lungu, W Pirker, S Bohlhalter, T Nyffeler, J Kraemmer, D Haubenberger, F Ph S Fischmeister, E Auff, M Hallett, R Beisteiner
BACKGROUND AND PURPOSE: Impaired dexterity (fine hand movements) is often present in Parkinson's disease (PD), even at early to moderate disease stages. It has a detrimental impact on activities of daily living (ADL) such as buttoning, contributing to reduced quality of life. Limb-kinetic apraxia, a loss of the ability to make precise, independent but coordinated finger and hand movements, may contribute to impaired dexterity even more than bradykinesia per se. However, the impact of limb-kinetic apraxia on ADL remains controversial...
August 2016: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
Warren G Darling, Marc A Pizzimenti, Diane L Rotella, Stephanie M Hynes, Jizhi Ge, Kimberly Stilwell-Morecraft, Robert J Morecraft
The effects of primary somatosensory cortex (S1) injury on recovery of contralateral upper limb reaching and grasping were studied by comparing the consequences of isolated lesions to the arm/hand region of primary motor cortex (M1) and lateral premotor cortex (LPMC) to lesions of these same areas plus anterior parietal cortex (S1 and rostral area PE). We used multiple linear regression to assess the effects of gray and white matter lesion volumes on deficits in reaching and fine motor performance during the first month after the lesion, and during recovery of function over 3, 6 and 12months post-injury in 13 monkeys...
July 2016: Experimental Neurology
Fabio Vanoglio, Palmira Bernocchi, Chiara Mulè, Francesca Garofali, Chiara Mora, Giovanni Taveggia, Simonetta Scalvini, Alberto Luisa
OBJECTIVE: The purpose of the study was to evaluate the feasibility and efficacy of robot-assisted hand rehabilitation in improving arm function abilities in sub-acute hemiplegic patients. DESIGN: Randomized controlled pilot study. SETTING: Inpatient rehabilitation centers. PARTICIPANTS: Thirty hemiplegic stroke patients (Ashworth spasticity index <3) were recruited and randomly divided into a Treatment group (TG) and Control group (CG)...
April 7, 2016: Clinical Rehabilitation
Kayla M D Cornett, Manoj P Menezes, Paula Bray, Mark Halaki, Rosemary R Shy, Sabrina W Yum, Timothy Estilow, Isabella Moroni, Maria Foscan, Emanuela Pagliano, Davide Pareyson, Matilde Laurá, Trupti Bhandari, Francesco Muntoni, Mary M Reilly, Richard S Finkel, Janet Sowden, Katy J Eichinger, David N Herrmann, Michael E Shy, Joshua Burns
IMPORTANCE: Disease severity of childhood Charcot-Marie-Tooth disease (CMT) has not been extensively characterized, either within or between types of CMT to date. OBJECTIVE: To assess the variability of disease severity in a large cohort of children and adolescents with CMT. DESIGN, SETTING, AND PARTICIPANTS: A cross-sectional study was conducted among 520 children and adolescents aged 3 to 20 years at 8 universities and hospitals involved in the Inherited Neuropathies Consortium between August 6, 2009, and July 31, 2014, in Australia, Italy, the United Kingdom, and the United States...
June 1, 2016: JAMA Neurology
Felicia C Goldstein, Angela Caveney, Vicki Stover Hertzberg, Rob Silbergleit, Sharon Yeatts, Yuko Palesch, Harvey Levin, Wright David
A Phase III, double-blind, placebo-controlled trial (ProTECT III) found that administration of progesterone did not reduce mortality or improve functional outcome as measured by the Glasgow Outcome Scale Extended (GOSE) in subjects with moderate to severe TBI. We conducted a secondary analysis of neuropsychological outcomes to evaluate whether progesterone is associated with improved recovery of cognitive and motor functioning. ProTECT III was conducted at 49 Level I Trauma Centers in the United States. Adults with moderate to severe TBI were randomized to receive intravenous progesterone or placebo within four hours of injury for a total of four days...
March 14, 2016: Journal of Neurotrauma
Caleb R S McEntire, Gourav R Choudhury, April Torres, Gary K Steinberg, D Eugene Redmond, Marcel M Daadi
BACKGROUND AND PURPOSE: Ischemic stroke is the leading cause of upper extremity motor impairments. Although several well-characterized experimental stroke models exist, modeling of upper extremity motor impairments, which are unique to primates, is not well established. Cortical representation of dexterous movements in nonhuman primates is functionally and topographically similar to that in humans. In this study, we characterize the African green monkey model of focal ischemia reperfusion with a defined syndrome, impaired dexterous movements...
April 2016: Stroke; a Journal of Cerebral Circulation
Inmaculada Riquelme, Samar M Hatem, Pedro Montoya
UNLABELLED: Children with autism spectrum disorders (ASD) often display an abnormal reactivity to tactile stimuli, altered pain perception, and lower motor skills than healthy children. Nevertheless, these motor and sensory deficits have been mostly assessed by using clinical observation and self-report questionnaires. The present study aims to explore somatosensory and motor function in children with ASD by using standardized and objective testing procedures. METHODS: Tactile and pressure pain thresholds in hands and lips, stereognosis, proprioception, and fine motor performance of the upper limbs were assessed in high-functioning children with ASD (n = 27) and compared with typically developing peers (n = 30)...
2016: Neural Plasticity
Jose Manuel Pérez-Mármol, María Azucena Ortega-Valdivieso, Enrique Elías Cano-Deltell, María Isabel Peralta-Ramírez, M Carmen García-Ríos, María Encarnación Aguilar-Ferrándiz
STUDY DESIGN: Descriptive, cross-sectional. INTRODUCTION: The impact of upper limb (UL) disability, dexterity and fine motor skill on self-efficacy in older adults with osteoarthritis (OA) is not well known yet. PURPOSES OF THE STUDY: To evaluate the self-efficacy and its relationship with UL function/disability in institutionalized OA. METHODS: Institutionalized adults (n = 45) over the age of 65 years with OA were evaluated in a single session, to determine pinch strength, active range of motion of the hand and UL disability and functionality...
January 2016: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
Shinichi Furuya, Takashi Hanakawa
Focal task-specific dystonia (FTSD) impairs not only motor dexterity, but also somatosensory perception involved in well-trained behavioral tasks. Occupations that carry a risk of developing FTSD include musician, writer, painter, surgeon, and golfer, which are characterized by repetitive and precise motor actions over a prolonged period. Behavioral studies have uncovered various undesirable effects of FTSD on sensorimotor functions, such as a loss of independent movement control, unintended muscular co-activation, awkward limb posture, and impairment of fine discrimination of tactile and proprioceptive sensations...
March 2016: Neuroscience Research
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