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:1/24/2017)... ... January 23, 2017 , ... The Pharmacy and Medically Underserved ... bipartisan original co-sponsorship of nearly one-quarter of the U.S. House of Representatives. The ... Chain Drug Stores (NACDS) strongly backs the legislation. , “NACDS thanks for their ...
(Date:1/24/2017)... ... 23, 2017 , ... The TouchPoint Solution, parent company of ... into the product’s app. The data replicates and validates Co-Founder and Neuropsychologist ... 30 seconds of using Buzzies, people experienced a 74 percent reduction in their ...
(Date:1/23/2017)... York, NY (PRWEB) , ... January 23, 2017 , ... ... announced today that John J. Nelson, a senior accountant at the Firm, will participate ... of Make-A-Wish® Hudson Valley. Over 200 runners will race up 1,576 steps, a vertical ...
(Date:1/23/2017)... FL (PRWEB) , ... January 23, 2017 , ... Wooden and plastic balance boards have ... strength and improve balance. Kumo Board is the first and only balance board ... it to be soft and rigid at the same time as well as skill-level adjustable ...
(Date:1/23/2017)... ... 2017 , ... METTLER TOLEDO has announced the availability of ... PAT Tools . , Crystallization is a common step used during ... Chemists now spend more time developing better intermediate and final crystallization steps. ...
Breaking Medicine News(10 mins):
(Date:1/24/2017)... YORK , Jan. 23, 2017 ... detect, and control light. The interaction of these ... used in a wide range of applications. These ... aerospace and defense, telecommunications, and healthcare among others. ... primarily owing to its low power consumption, reliability, ...
(Date:1/24/2017)... VALLEY COTTAGE, New York , January 23, 2017 ... Projected to Witness Sluggish Growth ... world are derived from formulating Active Pharmaceutical Ingredients (API), ... isopropanol, propanol and propylene glycol. Production of ... Asia-Pacific excluding Japan ...
(Date:1/23/2017)... 2017  Therabron Therapeutics, Inc., a clinical-stage biotechnology ... respiratory care, today announced that the European Medicines ... granted Orphan Drug Designation for Therabron,s CG367 program, ... (BOS).  "We are pleased to have ... treat patients diagnosed with BOS following lung transplantation. ...
Breaking Medicine Technology: