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:7/11/2014)... spider toxins to study the proteins that let nerve ... they have stumbled upon a biological tactic that may ... plagues in a safe and environmentally responsible way. ... lethal for one species and harmless for a closely ... specific pests without harming beneficial species like bees. A ...
(Date:7/11/2014)... In the brains of all vertebrates, information is ... electric or chemical signal to be passed from ... are the most abundant type of synapse, can ... crucial for learning, memory, perception and cognition, and ... for brain function. For instance, every time ...
(Date:7/10/2014)... Albuquerque, and other major cities in New Mexico, nearly ... municipal wastewater rather than precious potable water supplies. Across ... of all golf courses receive treated effluent. Reusing the ... Additionally, golf courses and homeowners alike fertilize their lawns ... is nitrate. A New Mexico State University turfgrass expert ...
Breaking Biology News(10 mins):Potent spider toxin 'electrocutes' German, not American, cockroaches 2Potent spider toxin 'electrocutes' German, not American, cockroaches 3Blame it on the astrocytes 2'Tailored' water -- the latest in lawn care 2
... a land owner and animals such as coyotes or wild pigs ... way to control their numbers in a humane way in ... at Texas A&M Universitys College of Veterinary Medicine & Biomedical Sciences. ... baited food, researchers say. Researchers are testing oral contraceptives ...
... at the center of some of the nation,s most ... global climate change. To provide a critical overview of ... summit of leading energy experts from the government, research ... an Academies study under way called "America,s Energy Future: ...
... syndrome (FXS) is the most common hereditary form of ... attention deficit and/or hyperactivity disorder (ADHD), which complicates social ... such as Ritalin is often successfully used to treat ... is effective in children with mental retardation, it also ...
Cached Biology News:Texas A&M testing oral contraceptives for animals 2NAS to hold 2-day summit on energy issues 2Effective ADHD treatment found for children with fragile X syndrome 2
(Date:7/11/2014)... SEATTLE , July 11, 2014  Researchers ... navigate three-dimensional images. The new technology, called Virtual ... of small structures like neurons and synapses using ... Finger,s unique technology makes 3D imaging studies orders ... resources at an unprecedented level across many areas ...
(Date:7/11/2014)... Scottsdale, AZ (PRWEB) July 11, 2014 ... medicine device company specializing in the soft tissue ... SureLock All-Suture Anchor System for surgeries involving the ... predictable fixation through a novel, inserter-controlled deployment method. ... lead to partial deployment, anchor pull-out, or anchor ...
(Date:7/10/2014)... Burkina Faso (PRWEB) July 10, 2014 ... Faso, today have access to an additional family ... increase access to contraception at all levels of ... a lower-dose formulation of a widely used contraceptive—Pfizer’s ... system. , Burkina Faso is the first of ...
(Date:7/10/2014)... Product and process impurities in ... and are often “lost in the noise,” making ... presenters Dr. Rowel Tobias, Senior Scientist, Protein Chemistry ... of Quality at Nanotherapeutics, Inc., to lear about ... detection and quantitation while achieving the required specificity ...
Breaking Biology Technology:Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 3Cayenne Medical Launches SureLock™ All-Suture Anchor System for Shoulder and Extremity Surgery 2Cayenne Medical Launches SureLock™ All-Suture Anchor System for Shoulder and Extremity Surgery 3Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 2Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 3Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 4Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 5Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 6Novel Ms Techniques Speed Detection of Biopharmaceutical Product and Process Impurities, New Webinar Hosted by Xtalks 2
... students for work in ... medical manufacturing, COLUMBUS, Ohio, ... other consumer products are being leveraged by,Ohio,s growing bioscience industry to ... of skilled labor to sustain,the unprecedented growth of the bioscience industry, ...
... 30 Vanda Pharmaceuticals,Inc. (Nasdaq: VNDA ), ... of clinical-stage product candidates for central,nervous system disorders, ... quarter ended September 30, 2008., Vanda reported ... of 2008 of $3.8 million, compared to $5.5 ...
... DIEGO, Oct. 30 Prometheus Laboratories Inc., ... the U.S.,Patent and Trademark Office (USPTO) has ... PROMETHEUS(R) Thiopurine Metabolites, a,diagnostic test that enables ... reach and maintain desired therapeutic levels. The ...
Cached Biology Technology:Rapidly Expanding Ohio Bioscience Industry Drives New Workforce Training Program 2Rapidly Expanding Ohio Bioscience Industry Drives New Workforce Training Program 3Vanda Pharmaceuticals Reports Third Quarter 2008 Results 2Vanda Pharmaceuticals Reports Third Quarter 2008 Results 3Vanda Pharmaceuticals Reports Third Quarter 2008 Results 4Vanda Pharmaceuticals Reports Third Quarter 2008 Results 5Vanda Pharmaceuticals Reports Third Quarter 2008 Results 6Vanda Pharmaceuticals Reports Third Quarter 2008 Results 7Vanda Pharmaceuticals Reports Third Quarter 2008 Results 8Vanda Pharmaceuticals Reports Third Quarter 2008 Results 9Vanda Pharmaceuticals Reports Third Quarter 2008 Results 10Prometheus Strengthens Intellectual Property Portfolio with Newly Issued Patents for Thiopurine Metabolite Testing 2
... is an automated instrument with a thin ... real-time using light or fluorescence microscopy. Biaxial ... and fibroblast cells can be simulated by ... and Y axis of our strain chamber. ...
... regulate cell stretching or compression of a ... Computer controlled so you can precisely regulate ... to produce 64 unique strain parameters. ST-160 ... ST-150. Both models are compatible with Nikon, ...
... Glycosylation is a post-translational modification ... biological functions, including immune regulation, inflammation, ... Biotechnology has developed two lectin based ... and Wheat Germ Agglutinin (WGA), that ...
... activated carrier proteins to simplify the ... Activated Carrier Proteins are commonly used ... a heterobifunctional cross-linker (Sulfo-SMCC). This activation ... protein. Thus allowing the maleimide-activated ...
Biology Products: