Navigation Links
Learning causes structural changes in affected neurons
Date:2/3/2011

When a laboratory rat learns how to reach for and grab a food pellet a pretty complex and unnatural act for a rodent the acquired knowledge significantly alters the structure of the specific brain cells involved, which sprout a whopping 22 percent more dendritic spines connecting them to other motor neurons.

The finding, published in the journal Proceedings of the National Academy of Sciences by Mark H. Tuszynski, MD, PhD, professor of neurosciences and colleagues at the University of California, San Diego School of Medicine, underscores the brain's remarkable ability to physically change as it learns (not just in rats, but presumably in humans too), but also reveals that the effect is surprisingly restricted to the network of neurons actually involved in the learning.

"I think it's fair to say that in the past it was generally believed that a whole cortical region would change when learning occurred in that region, that a large group of neurons would show a fairly modest change in overall structure," said Tuszynski, who is also director of the Center for Neural Repair at the UC San Diego and a neurologist at the Veterans Affairs San Diego Health System.

"Our findings show that this is not the case. Instead, a very small number of neurons specifically activated by learning show an expansion of structure that's both surprisingly extensive there's a dramatic increase in the size and complexity of the affected neurons and yet highly restricted to a small subset of cells. And all of this structural plasticity is occurring in the context of normal learning, which highlights just how changeable the adult brain is as a part of its normal biology."

Tuszynski said the new work improves science's basic understanding of how the brain learns. "This tells us that learning may be mediated by relatively few cells, but that these few cells exhibit a substantial or extensive change in structure." Notably, the impacted cells
'/>"/>

Contact: Scott LaFee
slafee@ucsd.edu
619-543-6163
University of California - San Diego
Source:Eurekalert  

Page: 1 2 3

Related medicine news :

1. Better learning through handwriting
2. Learning the language of bacteria
3. Nicotine exposure in pregnant rats puts offspring at risk for learning disabilities
4. U of M researchers find learning in the visual brain
5. Children with high blood pressure more likely to have learning disabilities
6. Sleep Appears to Aid Learning
7. Could learning self-control be enjoyable?
8. Clinical trials can be improved by managing the learning curve
9. Adiposity hormone, leptin, regulates food intake by influencing learning and memory
10. MIT researchers find that Sirtuin1 may boost memory and learning ability
11. Antioxidants may help prevent malaria complicaton that leads to learning impairment
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Learning causes structural changes in affected neurons
(Date:7/11/2014)... MIDDLEBURY, CT (PRWEB) July 11, 2014 ... announced today the launch of the Timex Performance Network, ... product information, training plans, athlete testimonials, seasonal news and ... Performance Network will capitalize on the legacy of the ... online destination for runners and endurance athletes nationwide. The ...
(Date:7/11/2014)... 11, 2014 (HealthDay News) -- Polio is history in ... like Afghanistan, Nigeria and Pakistan. Giving vaccinated children an ... immunity and help eradicate the highly infectious disease, a ... highly effective, immunity wanes as early as a year ... infected and contribute to the spread of the disease, ...
(Date:7/11/2014)... AngelWeddingDress is now providing worldwide clients with ... ”. When it comes to buying summer wedding dresses ... the unlimited stock of beautiful wedding gowns. Recently, the ... summer wedding gowns. , The company’s current promotion ... pace with the newest fashion trends. The top experts ...
(Date:7/11/2014)... Alliance Labs announced that they will be featured ... Jr, airing later this year 2014, via Discovery Channel. ... Innovations will explore DocuSol® Kids, a mini-enema containing a ... base designed to give adolescents general constipation relief. Viewers ... hyperosmotic laxative by drawing water into the bowel from ...
(Date:7/11/2014)... July 11, 2014 Anterior Cruciate Ligament ... but the type of material used to create a ... the game, say researchers presenting their work today at ... Sports Medicine ( AOSSM ). , “Our ... allografts (tissue harvested from a donor) fail more frequently ...
Breaking Medicine News(10 mins):Health News:Timex Announces Launch of Timex Performance Network 2Health News:Researchers Assess New Way to Boost Polio Immunity 2Health News:AngelWeddingDress Will Continuously Unveil More Summer Wedding Dresses for Loyal Clients 2Health News:Alliance Labs & DocuSol® to be Featured in Upcoming Episode of Innovations 2Health News:ACL Reconstructions May Last Longer With Autografts 2
... cases from two severely disabled children. These cases were mainly ... negligent medical advice. //One such is that of Alexia Harriton, ... that her family doctor had not informed her mother about ... is that of a five-year-old Keeden Waller who was born ...
... The Australian Medical Association announced today that six doctors ... the implementation of new rosters,//which they contend could harm ... doctors are simply expressing displeasure over the new working ... the resignation of the doctors was effective from this ...
... the doctors of the Royal College of Physicians it was ... //It was found that about 73% of the doctors were ... dying where it states that the doctors should be given ... the terminally ill person. But the physicians of the ...
... Office workers are at an increased risk of being affected ... hours on their computer.// DVT is a condition that gives ... the heat or the lung with often fatal consequences. ,This ... e-thrombosis. The condition came to light after it emerged that ...
... take place on June 18 has been advanced to ... the advancement but the centre is against the advancement ... the death of about 1,000 to 2,000 lives every ... children in Muslim-dominated areas are dying. About 5.2 million ...
... from Uttar Pradesh has disproved the claims of health authorities ... been reported in the state. ,This is reported ... (NPSP) issued here this month. ,Some of the ... by the state but also by international agencies like UNICEF, ...
Cached Medicine News:Health News:Fresh Polio Cases Reported In Uttar Pradesh 2
(Date:1/15/2014)... 2014  Novation, the leading health care supply chain expertise, ... reseller (VAR) national contracts that expand its portfolio to ... lower costs. These include manufacturer product and service agreements, ... and ongoing IT consulting support. New ...
(Date:1/15/2014)... DUBLIN , January 15, 2014 Shire plc ... waived the Office of Fair Trading (OFT) approval condition to the ... Incorporated (NASDAQ: VPHM).   As a result of the ... Shire expects to complete the tender offer on January 24, 2014 ...
(Date:1/15/2014)...  Manufacturers, suppliers and distributors of innovative medical-related products ... most important business assets, intellectual property (IP). ... Because of the highly-competitive nature of the Medical ... most litigious industry sectors of cases involving IP ...
Breaking Medicine Technology:New Novation Information Technology VAR Contracts Offer Significant Savings to Hospitals 2Shire Waives OFT Condition Relating to the Acquisition of ViroPharma Inc. 2Shire Waives OFT Condition Relating to the Acquisition of ViroPharma Inc. 3Intellectual Property Insurance for Medical-related Products and Services 2
... Incorporated (NASDAQ: VPHM ) today announced the ... ILNS) to its clinical stage drug candidate, OX1, being ... rare, hereditary, progressive neurodegenerative disease. OX1, ... molecule that has potent anti-oxidant properties that can protect ...
... KIRKLAND, Wash., Sept. 29, 2011 Cardiac Dimensions®, Inc. ... Mark approval for a newly enhanced version of its ... heart failure patients suffering from functional mitral regurgitation (FMR). ... initiate a commercial launch of the enhanced device in ...
Cached Medicine Technology:ViroPharma Licenses Rights From Intellect Neurosciences for Product Candidate for Friedreich's Ataxia 2ViroPharma Licenses Rights From Intellect Neurosciences for Product Candidate for Friedreich's Ataxia 3ViroPharma Licenses Rights From Intellect Neurosciences for Product Candidate for Friedreich's Ataxia 4Cardiac Dimensions® Receives CE Mark Approval for Enhanced CARILLON® Mitral Contour System™ 2Cardiac Dimensions® Receives CE Mark Approval for Enhanced CARILLON® Mitral Contour System™ 3
... Advanced diagnostic capabilities combined with ease of ... product in its class. Ideal for office ... complete system for Uroflowmetry, cystometry, leak point ... configurations are available which make the OM-5 ...
... with ease of use make the OM-5 ... Ideal for office or hospital-based urodynamics, the ... cystometry, leak point pressure, or urethral pressure ... make the OM-5 flexible enough to meet ...
... with ease of use make the OM-5 ... Ideal for office or hospital-based urodynamics, the ... cystometry, leak point pressure, or urethral pressure ... make the OM-5 flexible enough to meet ...
... capabilities combined with ease of use make ... its class. Ideal for office or hospital-based ... for Uroflowmetry, cystometry, leak point pressure, or ... available which make the OM-5 flexible enough ...
Medicine Products: