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

in the rat study were not clustered together, but widely distributed over the motor cortex of the rat brain, suggesting that learned behaviors create expansive networks of distant cells.

Whether these new connections and changes are permanent is the subject of continuing research. For a rat, reaching for and grasping food is a learned behavior that takes time and repetition to master, not unlike a person learning to ride a bike or play the piano. If the behavior isn't regularly practiced, it becomes rusty, though it may be later resumed and remembered.

"This seems to be a 'hard-wired' form of memory," said Tuszynski. "We were curious whether we could find evidence of hard-wiring as part of learning in animal brains. We designed this study and our original hypothesis seems to be confirmed.

"Whether this physically represents the formation of long-term memory is hard to say" Tuszynski said, explaining that the data are correlative. "The rats learn, and we know that the learning is mediated by the small set of cells we studied. We know that adjacent cells in the cortex, which are not required to learn the new task, do not show the structural change. So presumably the structural change is occurring only in the learning neurons, and the learning would likely not occur without the structural change."

He added that in order to determine whether the structural change is necessary for the learning to occur, scientists would need to block the expansion in spines and then observe a failure to learn. "Yet the inference is quite strong that structural change is necessary for the learning to occur."

Tuszynski said it remains to be seen how the brain changes in other types of learning, such as language-based knowledge or arithmetic-type learning.

"Types of memory that require much repetition for learning and that don't fade away easily likely use this modification of (dendritic) structure to accomplish the learning," he
'/>"/>

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:7/23/2014)... Steven Reinberg HealthDay Reporter ... Many obese and overweight American children and teens look ... fine, U.S. health officials reported Wednesday. "Being overweight ... as high blood pressure, high cholesterol and diabetes," said ... U.S. Centers for Disease Control and Prevention,s National Center ...
(Date:7/23/2014)... The next episode of “Extreme Weight Loss” ... was physically fit through childhood and adolescence. After becoming ... heart-wrenching decision to give her son up for adoption. ... years, and she punished herself by overeating, gaining nearly ... non-competitive approach to weight loss transformations, “Extreme Weight Loss” ...
(Date:7/23/2014)... 23, 2014 Home Care Assistance ... for seniors, is proud to announce the next installment ... in a wide range of health and wellness-related fields. ... and award-winning author Nancy Kriseman, and will cover the ... prevent burnout by becoming more self-aware. In particular, Nancy ...
(Date:7/23/2014)... Painful or itchy skin lesions could be a warning ... have multiple lesions that are suspicious looking, and those ... for non-melanoma skin cancers," study author Dr. Gil Yosipovitch, ... said in a Temple University Health System news release. ... patients who were confirmed to have skin cancer lesions ...
(Date:7/23/2014)... supports a growing body of research suggesting a ... in treating postmenopausal breast cancer, with fewer detrimental ... standard anti-hormone therapies. The study will be published ... Reproductive Biology and Endocrinology . , Breast ... women in the United States. Approximately 70% of ...
Breaking Medicine News(10 mins):Health News:Many Obese U.S. Kids Think They're Thinner Than They Are 2Health News:Many Obese U.S. Kids Think They're Thinner Than They Are 3Health News:“Extreme Weight Loss”: Cassie’s journey begins at the University of Colorado Anschutz Health and Wellness Center 2Health News:Home Care Assistance Calgary to Host Public Webinar on the Topic of Caregiver Mindfulness 2Health News:Home Care Assistance Calgary to Host Public Webinar on the Topic of Caregiver Mindfulness 3Health News:Painful, Itchy Patches Could Be Sign of Skin Cancer 2Health News:Hormones after breast cancer: Not fuel for the fire after all? 2Health News:Hormones after breast cancer: Not fuel for the fire after all? 3Health News:Hormones after breast cancer: Not fuel for the fire after all? 4Health News:Hormones after breast cancer: Not fuel for the fire after all? 5
... Amanda Gardner HealthDay Reporter , FRIDAY, Dec. 16 ... who receive targeted radiation to the breast after a lumpectomy ... only about a third of these women were considered "suitable" ... study published in the Dec. 16 online issue of the ...
... SAGE and the European Society of Cardiology (ESC) ... Journal: Acute Cardiovascular Care. The first issue will be ... represents over 70,000 cardiology professionals across Europe and the ... including publishing seven of the world,s leading cardiology journals. ...
... 17 (HealthDay News) -- The busy holiday season may disrupt ... it is especially important to remember to look after your ... people to consume sugary treats and drink alcoholic beverages more ... General Dentistry, said in an academy news release. "Additionally, ...
... Will a drug used to treat childhood acute lymphoblastic leukemia ... UB associate professor of pharmaceutical sciences, Javier G. ... research and clinical practice, has focused recent efforts on trying ... study in the Journal of Clinical Oncology looked for the ...
... Scientists may have a way to double the efficacy ... Sciences University scientists have devised a way to reduce lung ... caused by radiation therapy., "Radiation is a great therapy ... Dynan, biochemist and Associate Director of Research and Chief, Nanomedicine ...
... FRIDAY, Dec. 16 (HealthDay News) -- Chronic pain can ... the affected partner,s ability to cope with the pain, ... shown that validation of a spouse,s emotions (showing respect ... invalidation of emotions (showing hostility or no interest) increases ...
Cached Medicine News:Health News:Targeted Radiation for Breast Cancer May Be Overused: Study 2Health News:Targeted Radiation for Breast Cancer May Be Overused: Study 3Health News:Sage and European Society of Cardiology extend publishing partnership 2Health News:Dentist Gives Advice to Keep Holiday Smiles Bright 2Health News:Childhood cancer drugs cure now, may cause problems later, UB research shows 2Health News:Scientists may be able to double efficacy of radiation therapy 2Health News:Spouse's Reaction May Affect Pain Management 2
(Date:7/23/2014)... On Tuesday, July 1, 2014, ... the 116 th Judicial District Court in ... RegenLab USA, LLC ("Defendant") for Tortious ... through false and misleading actions, fraud, fraud-in-the-inducement, business ... through libel, disparagement, defamation, misrepresentation, and violating the ...
(Date:7/23/2014)... Creekridge Capital, an independent vendor-focused finance ... so far in 2014 to their portfolio of ... from both the healthcare and technology industries. They ... multi-national companies. Each of these new vendors take ... including: standard leasing products, subscription solutions, a dedicated ...
(Date:7/23/2014)...  Mezzion Pharma Co. Ltd., announced that it has ... udenafil to treat adolescents who have undergone the Fontan ... program will follow protocols developed by a subcommittee made ... a multi-center clinical research network funded by the National ... Institutes of Health (NIH). The studies, ...
Breaking Medicine Technology:Creekridge Capital Signs Several New Vendor Partners 2Mezzion Pharma Initiates Clinical Development Program To Evaluate Udenafil In Adolescents With Single Ventricle Heart Defects 2
... (Nasdaq: BMRN ) today hosted a Research ... team and industry experts provided an update on BioMarin,s ... pipeline. "We believe 2011 has been a ... and early stage clinical development programs," said Jean-Jacques Bienaime, ...
... Modern Materials Division of Heraeus Kulzer, LLC, the ... The division has been the leader in the U.S. dental ... Modern Materials was founded in 1946 in St. Louis, ... chemist, was "Mr. Inside" while Mr. Piper, the consummate salesman, ...
Cached Medicine Technology:Highlights from BioMarin's Research & Development Day 2Highlights from BioMarin's Research & Development Day 3Highlights from BioMarin's Research & Development Day 4Highlights from BioMarin's Research & Development Day 5Highlights from BioMarin's Research & Development Day 6Heraeus' Modern Materials Division Celebrates 65th Anniversary 2Heraeus' Modern Materials Division Celebrates 65th Anniversary 3
Large image and wide-angle design....
Large-image field with titanium couplers for c-mount scopes. 30mm focal length....
High intensity lamp with built-in, switchable spare lamp. Low-noise fan with reduced air turbulence....
PDA application listing specific ICD-9 coding listed in new Medicare National Coverage Determinations....
Medicine Products: