Navigation Links
Bird Brains Show How Trial and Error May Contribute to Learning

l ganglia and forwards the information to motor neurons that participate in song production. Without LMAN, scientists have long known, a young bird cannot learn its song, but an adult bird can sing its song without that region of the brain. A postdoctoral fellow on another project had noticed greater and more variable brain activity when the finches were singing to themselves compared to when they were serenading females. Kao wondered whether she could cause changes in bird song by manipulating this region.

Learning takes some time, so Kao expected to wait for her results. But stimulating the LMAN had an immediate impact. The tune and rhythm of the basic song did not change, but a tiny burst of electricity would show up a few notes later as a change in volume or pitch at a particular time in the song.

The variations are usually too subtle for human ears, Kao said, but sensitive recording equipment can detect them. The systematic trials were possible with the aid of a computer program that could track the bird twitters and trigger stimulations to LMAN at precise moments to elicit measurable effects on a predetermined syllable, song after song.

The researchers found that different areas of LMAN tuned the same note in different directions, one area raising the pitch of a certain note and another area lowering its frequency. The moment-by-moment influence of this brain region on song is a new observation, Brainard said.

Next, the researchers analyzed the relationship between song and the natural neural activity of LMAN during the two types of male finch song, the performance-quality song directed at females, accompanied by some posturing and feather plumping, and the experimental solo variations, called "undirected," akin to singing in the shower. The brain region showed greater activity and more variable signaling during the undirected song, suggesting that this area is generating the variations of solo song.

Finally, they showed
'"/>

Source:Howard Hughes Medical Institute

Note : Some audio media is available in the original press release. Go check it out.


Page: 1 2 3

Related biology news :

1. Bees, Brains and Addiction
2. Brains response to visual stimuli helps us to focus on what we should see, rather than all there is to see
3. Brainstem blocks pain to protect key behaviors
4. Brains can recover from alcoholic damage but patients should stop drinking as soon as possible
5. FDA Approves Human Hookworm Vaccine for Phase I Safety Trials
6. NIAID Initiates Trial of Experimental Avian Flu Vaccine
7. EuroVacc 02 HIV Vaccine Trial Begins
8. Visceral Leishmaniasis: Successful Vaccine Trial In Dogs
9. Trial success for diabetic nerve therapy
10. Trials for new drug to overcome HIV
11. Errors in the measurement of global warming corrected
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Bird Brains Show How Trial and Error May Contribute Learning

(Date:9/16/2014)... tree species has its own bacterial identity. That,s the ... other institutions who studied the genetic fingerprints of bacteria ... island. , "This study demonstrates for the first time ... different ecological strategies possess very different microbial communities on ... former postdoctoral researcher in the UO,s Institute of Ecology ...
(Date:9/16/2014)... A complex web of interaction between viruses, bacteria, ... by a growing international collaboration between Matthew Sullivan, ... of Ecology and Evolutionary Biology and Steven Hallam ... Canada. , "Bacteria are drivers of nutrient ... said. "As the climate is changing, so are ...
(Date:9/16/2014)... extravagant, colorful tail feathers in courtship of a peahen. ... camera developed by an engineer at Washington University in ... choose their mates based on a similar display. , ... used a bioinspired polarization camera developed by Viktor Gruev, ... Washington University, to make the discovery. His camera has ...
Breaking Biology News(10 mins):Microbiome research shows each tree species has a unique bacterial identity 2New research decodes virus-host interactions in ocean dead zones 2New research decodes virus-host interactions in ocean dead zones 3Camera developed at WUSTL sheds light on mate choice of swordtail fish 2
... Nov. 9, 2007 Researchers at Childrens Hospital of ... currently underway to study the effectiveness of oral insulin in ... people at risk for the disease. The researchers want ... or delay the onset of type 1 diabetes in relatives ...
... Flip through the 133 page record of the 2006-2007 activities ... and youll see why they recently took home the nations ... toss fundraiser. Youll find the detailed lesson plans that ... to 75 fifth grades at Spreckels elementary school last year. ...
... helping an effort to eradicate malaria, the mosquito-borne disease ... Researchers at the National Institute of Standards and Technology ... a young company create weakened, harmless versions of the ... to create a new type of vaccine that shows ...
Cached Biology News:Children's Hospital studying drug with the potential to prevent/delay onset of type 1 diabetes 2UC-San Diego Engineering Honor Society wins most outstanding chapter award 2Bug-Zapper: A dose of radiation may help knock out malaria 2
(Date:9/16/2014)... September 16, 2014 CIRTEC Medical Systems’ ... Highley as CEO of CIRTEC. , “I am ... for the Company.” noted Brian Highley. “The company has ... sustaining strong organic growth over the past two years. ... continuing to improve and expand the services Cirtec offers ...
(Date:9/16/2014)... 16, 2014   Synthetic Biologics, Inc. ... anti-infective biologic and drug programs targeting specific pathogens ... completion of the Company,s Investor Day in ... irritable bowel syndrome (IBS) program, including its novel, ... In the keynote presentation, Mark Pimentel ...
(Date:9/16/2014)... Arizona (PRWEB) September 16, 2014 ... develops safe and effective products to treat patients ... use of a proprietary SPACE™ Technology Platform announced ... and President will present at the White Hat ... at the Hyatt Regency Phoenix. In addition, ...
(Date:9/16/2014)... BARBARA, Calif. , Sept. 16, 2014 /PRNewswire-iReach/ ... Strength index (BMSi) test identifies patients with bone ... cannot.  Over 160 million people worldwide are at ... detected by today,s standard bone strength test, the ... the 2014 American Society for Bone and Mineral ...
Breaking Biology Technology:Synthetic Biologics' Statin-Class Candidate for Constipation-Predominant Irritable Bowel Syndrome Detailed at Company's Investor Day 2Synthetic Biologics' Statin-Class Candidate for Constipation-Predominant Irritable Bowel Syndrome Detailed at Company's Investor Day 3Convoy Therapeutics to Present at WhiteHat Investor Conference September 18, 2014 2Convoy Therapeutics to Present at WhiteHat Investor Conference September 18, 2014 3ActiveLife's BMSi Test Provides Hope for 160 Million with Undetectable Risk of Bone Fracture 2ActiveLife's BMSi Test Provides Hope for 160 Million with Undetectable Risk of Bone Fracture 3
... Jan. 4 Anadys Pharmaceuticals,Inc. (Nasdaq: ANDS ) ... Annual,JPMorgan Healthcare Conference on Thursday, January 10, 2008 at ... held at the Westin St. Francis,Hotel in San Francisco., ... of Anadys,Pharmaceuticals, Inc., will present an update and overview ...
... 4 ARCA Discovery Inc., a privately held,biopharmaceutical ... other cardiovascular diseases, today announced Richard B.,Brewer, President ... 26th,Annual JPMorgan Healthcare Conference on Tuesday, January 8 ... Conference will be held January 7-10, 2008 at,the ...
... NEW YORK, Jan. 4 QED International ... a series of,20 underlying fund portfolios, today ... on Monday January 7, 2008, Alexion Pharmaceutical, ... Pharmaceutical, Inc. (Nasdaq: ASPV ) in,the ...
Cached Biology Technology:Anadys Pharmaceuticals to Present at the JPMorgan Healthcare Conference 2ARCA Discovery, Inc. to Present at 26th Annual JPMorgan Healthcare Conference on January 8, 2008 2QED International Associates Announces Changes to the HealthShares(TM) Autoimmune-Inflammation and Neuroscience Indexes - Correction 2
... The Label IT siRNA Tracker Intracellular ... to directly label and deliver siRNA, of ... manner, for in vitro tracking experiments. Subcellular ... expression can be monitored following introduction of ...
... This CLS number is a ... easily match Cornings product number. ... please order under the old ... customer service for assistance. ID ...
... through the extracellular matrix (ECM) is an ... cells initiate invasion by adhering to and ... Proteolytic enzymes, such as MMP collagenases, dissolve ... membrane) surrounding the blood vessels to allow ...
... Cell Invasion Assay is designed to determine ... as a significant barrier to invasion or ... in a convenient, high-throughput, 96-well format. The ... all types of adherent cells such as ...
Biology Products: