Navigation Links
New research shows slight of hand is not so slight
Date:4/17/2008

WEST LAFAYETTE, Ind. - Typing on a keyboard or scribbling on paper may be similar activities, but there is a significant difference in how the body moves, according to new motor development research.

"In language we start with letters that lead to syllables that lead to words, and we use grammar to put everything together," said Howard N. Zelaznik, a Purdue University professor of health and kinesiology. "One of the fundamental questions in motor control is whether there is an alphabet that guides movement.

"We wanted to know if discrete skills, which have a definite beginning and end, such as typing, are controlled identically to continuous skills, such as scribbling, which do not have such a clear beginning and end. Or, are continuous movements composed of a series of discrete movements that are knotted together" On both accounts, the answer is no."

Zelaznik was part of research team led by Viktor Jirsa, director of research at the Centre National de la Recherche Scientifique (CNRS) and a professor of movement sciences at the University of the Mediterranean in Marseilles, France, and Raoul Huys, a research associate at the Centre National de la Recherche Scientifique as well as at the University of the Mediterranean. Purdue graduate students Breanna Studenka and Nicole Rheaume also were part of the team. Their research findings were published Thursday (April 17) in the Public Library of Science's Computational Biology online journal.

"Potential implications for physical therapy and humanoid robotics are immense," Zelaznik said. "This work shows that discrete and continuous movements must be considered separate classes of movement."

For example, in a physical therapy setting many skills are taught discretely first, such as stepping or bending a joint, and then the patient is told to perform continuously, such as walking. Humanoid robots, which resemble people and walk upright, often control movements as a series of discrete actions.

"Prior to this work, the basis for explaining the relationship of these skill sets was based upon inferences from empirical movement data," Zelaznik said. "In our research, we mathematically and computationally demonstrate that the discrete model cannot be morphed into a continuous model and vice versa. Discrete models cannot produce fast repetitive movements, which shows us there is a difference in how the brain controls the body's slightest action."

These models are based on the assessment of eight study participants who performed timed finger-tapping tasks to match the tempo produced by a metronome. There were three conditions: moving as fast as possible, moving as smoothly as possible or moving naturally with no instruction. While the speed was manipulated, the participants' movement trajectories were recorded.

Zelaznik said the research team next may look at how these findings apply to other parts of the body, as well as evaluate more sophisticated tasks such as playing a musical instrument or throwing a baseball.

Zelaznik's component of this research was funded by the National Science Foundation. He also is collaborating with Purdue engineering professor C.S. George Lee and researchers from the Advanced Institute of Science and Technology in Japan to help create humanoid robots that move more like people.


'/>"/>

Contact: Amy Patterson Neubert
apatterson@purdue.edu
765-494-9723
Purdue University
Source:Eurekalert

Related medicine news :

1. MU researchers find clue to cataract formation
2. Plastic Surgeons Play Pivotal Role in War Injury Research
3. Californias First Non-profit Center for Autism Research, Education and Family Services
4. MassMutuals Center for Behavioral Research(SM) Releases White Paper on Best Practices in Education Campaigns
5. Scientists Explore Human Gene Pool With Help From Microsoft Research
6. Researchers evaluating food allergy treatment
7. Washington University in St. Louis and AstraZeneca Announce Alzheimers Research Collaboration
8. Patient-Controlled Health Records Could Change Future of Research
9. U of M researchers identify process that may help treat Parkinsons, spinal cord injuries
10. Research collaboration seeks blood test for aggressive breast cancer
11. OHSU Cancer Institute researchers discover key gene involvement in cancer development
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/1/2017)... , ... March 01, 2017 , ... ... healing grace in the lives of those who hear His voice. “Cleansing Thoughts; ... a retired Christian bookstore proprietor who enjoys boating, gardening and crocheting baby items ...
(Date:3/1/2017)... (PRWEB) , ... March 01, 2017 , ... “Our Pure Need of Obedience to the ... preparation for His return. “Our Pure Need of Obedience to the Law of God” is ... to attend missionary school. He and his wife, Anika, and children have since dedicated their ...
(Date:2/28/2017)... ... ... e-Zest Solutions ( http://www.e-zest.com ) – Digital Transformation leader ... intelligent mobile platform that is enabling sales people at small businesses to Fortune ... users in mind unlike most enterprise software, to improve their productivity by making ...
(Date:2/28/2017)... ... February 28, 2017 , ... Many of the country’s top ... Solutions to Healthcare’s Greatest Challenges,” during Intalere’s 2017 Executive Forum, taking place March ... Forum assembles the best and brightest healthcare leaders to exchange experiences, expertise and ...
(Date:2/28/2017)... Baltimore, MD (PRWEB) , ... February 28, 2017 , ... ... Healthcare are co-hosting a Wellness Day on March 4, 2017 from 10:00 a.m. to ... San Mateo and Menaul Blvds. , The goal of the Wellness Day is to ...
Breaking Medicine News(10 mins):
(Date:3/1/2017)... , March 1, 2017 The global  Intraoperative Neuromonitoring ... a new report by Grand View Research, Inc. The intraoperative neuromonitoring market is ... to the hospitals adopting intraoperative monitoring in a wide spectrum of surgeries. ... ... Grand View Research Logo ...
(Date:2/28/2017)... -- Prefilled Syringes Market: Scope and Segmentation Download ... report provides a forecast and analysis of the ... levels. It provides historical data of 2015 along ... of revenue (US$ Mn) and volume (Bn Units). ... an outlook on prefilled syringes consumption globally. It ...
(Date:2/28/2017)... , Feb. 28, 2017 Persistence Market ... global dysphagia management market in a new publication ... Forecast 2016-2024." As the name suggests, we have ... geographical regions and on the basis of the ... assessment of the opportunities available to all the ...
Breaking Medicine Technology: