Navigation Links
Unconscious learning uses old parts of the brain
Date:4/6/2010

A new study from the Swedish medical university Karolinska Institutet provides evidence that basic human learning systems use areas of the brain that also exist in the most primitive vertebrates, such as certain fish, reptiles and amphibians. The study involved an investigation into the limbic striatum, one of the evolutionarily oldest parts of the brain, and the ability to learn movements, consciously and unconsciously, through repetition.

"Our results strongly substantiate the theories that say that the implicit, by which I mean non-conscious, learning systems of the brain are simpler and evolutionarily older," says Associate Professor Fredrik Ulln from Karolinska Institutet and the Stockholm Brain Institute.

Many of the mundane skills that we apply every day, such as buttoning up a shirt or playing an instrument, comprise a sequence of discrete movements that must be carried out in the correct order. Scientists have long known that there are two learning systems for such patterns of movement; with the implicit system, we learn without being aware of the fact and without conscious training, such as through simple repetition. The explicit system, on the other hand, we use when we consciously train and are aware of what we are learning.

A brain structure that is involved in learning and motor control is the basal ganglia, which lie deep in the cerebral hemispheres. Dopamine, a substance used in the transmission of signals between neurons, is important for learning and the plasticity of the basal ganglia.

In the present study, which is published in PNAS, the journal of the American Academy of Sciences, researchers have examined both the implicit and explicit learning of motor sequences in relation to the number of dopamine D2 receptors in the basal ganglia. While they found a correlation between D2 receptor density and both forms of learning, they also noted that the evolutionarily oldest part of the basal ganglia the limbic striatum was only involved in implicit learning.

"In other words, we probably have certain fundamental learning systems in common not only with rats, mice and other mammals, but also with the most primitive vertebrates, which also have a limbic striatum," says Dr Ulln.

In the future, a better understanding of how these learning systems work can be of use in developing new treatments for diseases such as Parkinson's and Huntington's, which are characterised by disorders of basal ganglia function and impaired motor skills.


'/>"/>

Contact: Katarina Sternudd
katarina.sternudd@ki.se
46-852-483-895
Karolinska Institutet
Source:Eurekalert

Related medicine news :

1. PeopleStreme Collaborates with SkillSoft for Learning Management Content
2. Second City Communications to Keynote Premier International Conference of Learning and Development Professionals
3. Repeated Anesthesia May Hamper Childrens Learning Ability
4. Author Proves What Celebrities are Learning in "Who Do You Think You Are?" is More Important Than They Realize
5. Free Brain IQ Quiz, Activities for Home “Brain-Boosting” and Seminar Offered from LearningRX Denver during National Brain Awareness Month
6. Study suggests need for broader use of individualized learning plans for physicians
7. Ritalin Boosts Learning by Increasing Brain Plasticity, According to UCSF Research
8. Learning keeps brain healthy, UCI researchers find
9. UM School of Medicine finds prenatal cocaine exposure not severely damaging to growth, learning
10. Rapamycin rescues learning, memory in Alzheimers mouse model
11. Word learning in deaf children with cochlear implants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... ... PurhealthRX , a leading Health and Nutrition Company, is announcing the ... spectrum CBD oil will revolutionize the rapidly growing CBD market by reducing the amount ... into liquid products, while reducing costs to end users. , The team of researchers ...
(Date:10/13/2017)... , ... October 13, 2017 , ... Many families have ... many long-term care insurance companies have a waiver for care if the client has ... period, when the family pays for care, is often waived, so the benefits from ...
(Date:10/13/2017)... ... ... Yisrayl Hawkins, Pastor and Overseer at The House of Yahweh, has released ... understood books in the Holy Scriptures, Revelation. The Book of Revelation paints a picture ... Many have tossed it off as mere rubbish, but Yisrayl Hawkins says that is ...
(Date:10/13/2017)... ... 2017 , ... “America On The Brink”: the Christian history of the United ... the creation of published author, William Nowers. Captain Nowers and his wife, Millie, ... spent thirty years in the Navy. Following his career as a naval aviator ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... products to meet the demand of today’s consumer and regulatory authorities worldwide. From ... probiotic experts and tested to meet the highest standard. , These products ...
Breaking Medicine News(10 mins):
(Date:10/10/2017)...   West Pharmaceutical Services, Inc. (NYSE: WST), ... administration, today shared the results of a study highlighting ... intradermal administration of polio vaccines. The study results were ... 2017 by Dr. Ondrej Mach , Clinical Trials ... (WHO), and recently published in the journal Vaccine. ...
(Date:10/5/2017)... 5, 2017  In response to the nationwide ... Maxillofacial Surgeons (AAOMS) released prescribing recommendations that urge ... used as a first-line therapy to manage a ... Recognizing the value and importance ... "Opioid Prescribing: Acute and Postoperative Pain Management" stresses ...
(Date:10/4/2017)... 2017  According to the Centers for Disease Control and Prevention (CDC), ... PhysicianOne Urgent Care is helping communities across Massachusetts , ... by offering no-cost* flu shots through the end of the month. ... insurance regulations. ... get a flu shot is by the end of October, according to ...
Breaking Medicine Technology: