Topics

Fast and specific: insights into the acquisition and generalization of motor acuity.

08:00 EDT 16th October 2019 | BioPortfolio

Summary of "Fast and specific: insights into the acquisition and generalization of motor acuity."

Motor acuity is considered to be the outcome of prolonged practice and to involve morphological changes in the motor cortex. We have previously designed a curved pointing task, the arc pointing task (APT), to study motor acuity acquisition, defined as a change in the speed-accuracy tradeoff function (SAF) of the task. Here we study the generalization of motor acuity between hands and between tasks (drawing the arc in the opposite direction and with the untrained hand) and the effect of training duration on motor acuity. We report that training-induced motor acuity improvement did not generalize across hands and across tasks performed with the same hand, suggesting a task specific representation of motor acuity. To our surprise, the largest gains in motor acuity, measured both by changes in SAF and by improvement in multiple kinematic variables, were seen following a short exposure to the task. Our results suggest that motor acuity training-induced-improvement is task specific and that motor acuity starts to improve following a very short practice.

Affiliation

Journal Details

This article was published in the following journal.

Name: Journal of neurophysiology
ISSN: 1522-1598
Pages:

Links

DeepDyve research library

PubMed Articles [15438 Associated PubMed Articles listed on BioPortfolio]

Acquisition and consolidation of implicit motor learning with physical and mental practice across multiple days of anodal tDCS.

Acquisition and consolidation of a new motor skill occurs gradually over long time span. Motor imagery (MI) and brain stimulation have been showed as beneficial approaches that boost motor learning, b...

Temporal dynamics of Arc/Arg3.1 expression in the dorsal striatum during acquisition and consolidation of a motor skill in mice.

Region- and pathway-specific plasticity within striatal circuits is critically involved in the acquisition and long-term retention of a new motor skill as it becomes automatized. However, the molecula...

Motor Skill Acquisition during a Balance Task as a Process of Optimization of Motor Primitives.

It has been argued that the central nervous system relies on combining simple movement elements (i.e. motor primitives) to generate complex motor outputs. However, how movement elements are generated ...

Motor Strategies Learned during Pain Are Sustained upon Pain-free Re-exposure to Task.

Pain affects movement planning and execution, and may interfere with the ability to learn new motor skills. Variations among previous studies suggest task-specific effects of pain on the initial acqui...

Hear it, fear it: Fear generalizes from conditioned pictures to semantically related sounds.

Fear generalization is thought to be an important mechanism in the acquisition and maintenance of anxiety disorders. Previous studies have investigated fear generalization within one sensory modality ...

Clinical Trials [6172 Associated Clinical Trials listed on BioPortfolio]

Quality of Image and Performance Diagnoses of the 3D Sequence of Cholangio-pancreatography MRI in Apnea With Compressed Acquisition

The sequence of 3D CP-IRM, used in current practice in the protocols of bilio-pancreatic imaging, can be thus optimized to reduce acquisition time, thus the artefacts of movement, in parti...

Innovative Brain Stimulation for Induction of Learning Plasticity

Recent studies have identified new neurobiological biomarker (i.e. functional connectivity of the parietal cortex) of motor learning among healthy people. This enables to refine our curren...

Analysis of a Virtual Reality Task in Patients With Duchenne Muscular Dystrophy

The task consists in reach as much bubbles as they can, the bubbles appear on the screen of the computer and should be reached in 10 seconds. To accomplish that, three different devices wi...

The Prehospital Selection of Acute Stroke Patients

The aim of this study is to develop and validate a simple prehospital stroke scale, which would predict the presence of large vessel occlusion (LVO) in patients with acute stroke. This stu...

The Role of an Attention Demanding Activity for Priming Motor Learning

The purpose of this study is to determine if priming attention prior to practicing a motor task will have an effect on the ability to acquire and learn that motor task. The investigators h...

Medical and Biotech [MESH] Definitions

Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.

The functional superiority and preferential use of one eye over the other. The term is usually applied to superiority in sighting (VISUAL PERCEPTION) or motor task but not difference in VISUAL ACUITY or dysfunction of one of the eyes. Ocular dominance can be modified by visual input and NEUROTROPHIC FACTORS.

Timing the acquisition of imaging data to specific points in the cardiac cycle to minimize image blurring and other motion artifacts.

The phenomenon of an organism's responding to all situations similar to one in which it has been conditioned.

Skeletal muscle fibers characterized by their expression of the Type II MYOSIN HEAVY CHAIN isoforms which have high ATPase activity and effect several other functional properties - shortening velocity, power output, rate of tension redevelopment. Several fast types have been identified.

Quick Search


DeepDyve research library

Relevant Topic

Mergers & Acquisitions
Commercial and market reports on mergers and acquisitions in the biotechnology, pharmaceutical, medical device and life-science industries. Mergers and acquisitions (abbreviated M&A;) is an aspect of corporate strategy, corporate finance and manageme...


Searches Linking to this Article