Navigation Links
What gives us fingertip dexterity?
Date:1/23/2008

inst a rigid surface. The researchers found that the muscle coordination pattern clearly switched from that for motion to that for force (~65 ms) before contact. Venkadesans mathematical modeling and analysis revealed that the underlying neural control also switched between mutually incompatible strategies in a time-critical manner.

"We think that the human nervous system employs a surprisingly time-critical and neurally demanding strategy for this common and seemingly trivial task of tapping and then pushing accurately, which is a necessary component of dexterous manipulation, said Valero-Cuevas, who holds a joint appointment in the USC School of Dentistrys division of Biokinesiology and Physical Therapy.

Our data suggest that specialized neural circuitry may have evolved for the hand because of the time-critical neural control that is necessary for executing the abrupt transition from motion (tap) to static force (push), he said. In the tap-push exercise, we found that the brain must be switching from the tap command to the push command while the fingertip is still in motion. Neurophysiological limitations prevent an instantaneous or perfect switch, so we speculate that there must be specialized circuits and strategies that allow people to do so effectively.

If the transition between motor commands is not well timed and executed, your initial forces will be misdirected and you simply wont be able to pick up an egg, a wine glass or a small bead quickly, he said.

The findings begin to explain why it takes young children years to develop fine finger muscle coordination and skills such as precision pinching or manipulation, and why fine finger manipulation is so vulnerable to neurological diseases and aging, Valero-Cuevas said.

But perhaps even more importantly, he said, the findings suggest a functional explanation for an important evolutionary feature of the human brain: its disproportionately large sensory and
'/>"/>

Contact: Diane Ainsworth
dainswor@usc.edu
University of Southern California
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Online Epidemic Gives Clues to Bird Flu Spread
2. Welch Foundation gives $1.6 million for drug discovery research
3. 24 Hour Fitness Gives The Biggest Loser High-Tech Upgrade
4. New Technology at Unitrin Direct Gives Customers an Alternative to Waiting
5. Ancient mechanism for coping with stresses also gives cancer a boost
6. What gives us sunburn protects crayfish against bacteria
7. Bellevue Dentist Gives a Thumbs Up to Britney Spears Smile
8. National Trichotillomania Awareness Week Gives Help and Hope to Hair-Pullers
9. Mouse Study Gives Clues to Colitis
10. Acupuncture School Gives Free Acupuncture Treatments
11. CBaySystems Gives Away 2008 Honda Civic at AHIMA 2007
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... PLOS Pathogens , children who live in regions ... an immune response to infection with malaria parasites that ... fever and illness and partially control the growth of ... researchers develop future interventions that prevent or mitigate the ... approximately 200 million cases of malaria occur worldwide, resulting ...
(Date:4/17/2014)... the April issue of Immunity , Kevin J. ... Research, says it,s time to take a fresh look ... sepsis, which kills millions worldwide every year, including more ... into the bloodstream to fight an injury or infection ... maintaining good health without inflammation, wounds and infections ...
(Date:4/17/2014)... 2014) Doctors who treat patients with a ... can face an agonizing treatment decision. , The ... and help relieve shortness of breath. But some ... can cause potentially fatal complications following transplantation. , ... Dilling, medical director of Loyola University Medical Center,s ...
(Date:4/17/2014)... Irvine, Calif., April 17, 2014 By discovering a ... immediately after a stroke, researchers at UC Irvine and ... therapies that may limit or prevent stroke-induced brain damage. ... the fourth-leading cause of death and primary reason for ... damaged in a stroke and lets blood-borne material into ...
(Date:4/17/2014)... to ward off depression among retirees, particularly among those ... The Journals of Gerontology, Series B: Psychological ... " Internet Use and Depression Among Retired Older Adults ... authors report that Internet use reduced the probability of ... sample. , Late-life depression affects between 5 and ...
Breaking Medicine News(10 mins):Health News:Study sheds light on how the immune system protects children from malaria 2Health News:Feinstein Institute researcher publishes new perspective on sepsis 2Health News:Patients with rare lung disease face agonizing treatment dilemma 2Health News:Patients with rare lung disease face agonizing treatment dilemma 3Health News:Study IDs new cause of brain bleeding immediately after stroke 2Health News:Internet use may cut retirees' depression 2
... (Nasdaq: DIET ), a leading provider of convenient ... for the third,quarter and nine months ended September 30, ... were $4.8 million, compared to,$6.8 million in the prior ... or $(0.13) per diluted share, for the third quarter ...
... of successful pregnancy, research suggests , , THURSDAY, Nov. 13 ... to harden plastic packaging for many foods and beverages, ... (BPA) could hurt the chances of successful in vitro ... the uterus, according to presentations at the American Society ...
... 13 Debiopharm Group,(Debiopharm), a global independent ... and particularly oncology, today,announced that the New ... formulation,of Trelstar(R) (triptorelin pamoate) has been accepted ... and Drug Administration (FDA). Trelstar(R) is a,luteinizing ...
... Alaska,s alcohol tax increases tied to a drop in cirrhosis, ... Raising state taxes on alcohol may trigger an immediate drop ... new research reveals. , The finding is based on the ... to raise taxes on beer, wine and liquor in 1983 ...
... g has been approved by the U.S. Food and Drug Administration ... dosing regimen to treat moderate to severe postmenopausal dyspareunia (painful sexual ... , ... COLLEGEVILLE, Pa. (Business Wire EON) November 13, 2008 ...
... The American Veterinary,Medical Association (AVMA) hand delivered ... Barack Obama, congratulating him on his historic,election to ... and,animal-related issues on which the AVMA is prepared ... to President-elect Obama, signed by AVMA Chief Executive,Officer ...
Cached Medicine News:Health News:eDiets.com(R) Announces Q3 2008 Results 2Health News:eDiets.com(R) Announces Q3 2008 Results 3Health News:eDiets.com(R) Announces Q3 2008 Results 4Health News:eDiets.com(R) Announces Q3 2008 Results 5Health News:eDiets.com(R) Announces Q3 2008 Results 6Health News:eDiets.com(R) Announces Q3 2008 Results 7Health News:Chemical in Plastics May Cause Fertility Problems 2Health News:Chemical in Plastics May Cause Fertility Problems 3Health News:Debiopharm Announces U.S. NDA Filing of Trelstar(R) 6-Month Formulation for Locally Advanced or Metastatic Prostate Cancer 2Health News:Booze Taxes Lower Alcohol-Linked Deaths 2Health News:Booze Taxes Lower Alcohol-Linked Deaths 3Health News: FDA Approves Low-dose Regimen of PREMARIN Vaginal Cream to Treat Moderate to Severe Postmenopausal Dyspareunia – Painful Sexual Intercourse : Agency Grants New Indication for Bothersome Vaginal Symptom Associated with Menopause 2Health News: FDA Approves Low-dose Regimen of PREMARIN Vaginal Cream to Treat Moderate to Severe Postmenopausal Dyspareunia – Painful Sexual Intercourse : Agency Grants New Indication for Bothersome Vaginal Symptom Associated with Menopause 3Health News: FDA Approves Low-dose Regimen of PREMARIN Vaginal Cream to Treat Moderate to Severe Postmenopausal Dyspareunia – Painful Sexual Intercourse : Agency Grants New Indication for Bothersome Vaginal Symptom Associated with Menopause 4Health News:AVMA Congratulates President-Elect Obama, Highlights Key Issues 2
(Date:1/15/2014)... NEW YORK , Jan. 15, ... new market research report is available ... Global Markets and Technologies for ... on Routes of Administration ...
(Date:1/15/2014)... 2014  A novel wearable injector slightly larger than an Oreo ... to self-inject prescription drugs in the large doses required to ... autoimmune deficiencies, and genetic disorders.  An emerging ... 2018, according to analysts.   Many of these drugs will require ...
(Date:1/14/2014)... AUSTIN, Texas , Jan. 14, 2014  Luminex Corporation (Nasdaq: ... report results for the fourth quarter of 2013 on Monday, ... scheduled for release after the close of trading. ... a conference call to discuss the operating highlights and financial ...
Breaking Medicine Technology:Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 2Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 3Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 4Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 5Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 6Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 7Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 8Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 9Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 10Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 11Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 12Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 13Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 14Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 15Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on Routes of Administration 16Enable Injections Presents A New Class of Injectors for Drug Delivery at PEPTalk, Drug Delivery Partnership Meetings 2Luminex Corporation Fourth Quarter Earnings Release Scheduled for February 3, 2014 2Luminex Corporation Fourth Quarter Earnings Release Scheduled for February 3, 2014 3
... Inc. (NASDAQ: QCOR ) today announced ... to its Board of Directors.  Dr. Whitcup is ... Chief Scientific Officer at Allergan, Inc.  In that ... research and development organization, including medical affairs, drug ...
... Feb. 16, 2012 OPKO Health, Inc. and ChromaDex ... a strategic alliance pursuant to which ChromaDex has licensed ... health care technologies for distribution and business development throughout ... commercialized are BluScience™ ( www.bluscience.com ), ChromaDex,s ...
Cached Medicine Technology:Questcor Pharmaceuticals Appoints Scott M. Whitcup, M.D., to Board of Directors 2Questcor Pharmaceuticals Appoints Scott M. Whitcup, M.D., to Board of Directors 3Questcor Pharmaceuticals Appoints Scott M. Whitcup, M.D., to Board of Directors 4OPKO Health, Inc. Invests in ChromaDex® Corp. 2OPKO Health, Inc. Invests in ChromaDex® Corp. 3OPKO Health, Inc. Invests in ChromaDex® Corp. 4OPKO Health, Inc. Invests in ChromaDex® Corp. 5
... can code the charge while completing a chart ... away from office, both directly feeding the charge ... Encounter Form/Superbill, data entry can be done with ... payments are posted by reflecting open item charges, ...
The HearTwave system is the original stand-alone Microvolt T-Wave Alternans (MTWA) testing platform....
... that a second mirror adds, then you may ... features the same 1.5x magnification as the G-1 ... and 64 respectively. Available in standard (flange) or ... "Flanged" model for laser use. Provides ...
... The AFX (Air Fluid ... image lens designed for use ... addition to its use as ... lens, the low profile and ...
Medicine Products: