Navigation Links
Birds brains reveal source of songs

lain this effect, scientists theorized that the AFP circuit helps the juvenile compare its immature efforts with its parent's (usually the father's) example. That hypothesis, however, did not explain how all the playful variability in the little bird's babble arose in the first place.

For years, nobody had followed up on that question.

"We framed the question in a different way," Fee says of his research with postdoctoral fellow Bence P. Ölveczky and graduate student Aaron Andalman. "We said, this young bird is being creative, exploring many different sounds through trial and error. We hypothesized that the AFP is the source of this creativity, generating the variations, rather than comparing them."

To test this theory, Fee's team studied finches that were just old enough to begin their vocal explorations. The researchers temporarily inactivated the part of the AFP connecting to the motor system used in producing songs. That inactivation shut down all the variability, temporarily stranding the young finch with an immature version of the song.

These results suggested that the AFP circuitry itself causes the juvenile bird's experimentation with various sounds and sequences, and that such explorations are essential to learning songs. Deactivating the AFP after a bird had already learned the correct song had no affect on its continued proficiency.

The researchers then learned that the AFP neurons produce random bursts of activity coinciding with new variations in the practice routine.

"We think the bursts of these neurons 'kick' the motor pathway that is producing a song, jarring it out of the routine and making it sing something new," Fee says. Then another, still unexplained, pathway compares that variation to the bird's memory of the father's song. Gradually, the bird gets it right more often and eventually sings only the songs of its elders.


'"/>

Source:MIT


Page: 1 2

Related biology news :

1. Birds and bats sow tropical seeds
2. Birds that make teeth
3. Birds going extinct faster due to human activities
4. Birds found to plan for the future
5. Supercomputers to focus brains on AIDS dilemma
6. Mice brains shrink during winter, impairing some learning and memory
7. Divergent life history shapes gene expression in brains of salmon
8. Jumping genes contribute to the uniqueness of individual brains
9. Experts discuss use of human stem cells in ape and monkey brains
10. Sharp older brains are not the same as younger brains
11. Animal brains hard-wired to recognize predators foot movements, Queens study suggests
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Birds brains reveal source songs

(Date:4/22/2014)... 21, 2014) -- There are all sorts of signaling ... spread their colorful tails; satin bowbirds build specialized stick ... shiny objects; and European bitterling males show off bright ... a unique method to communicate with others. , ... "Signaling can have profound fitness implications for individuals that ...
(Date:4/22/2014)... HOUSTON (April 22, 2014) Biotechnology scientists must ... for new patent and licensing guidelines, according to a ... Policy. , Published in the current issue of the ... on the June 2013 U.S. Supreme Court ruling in ... Genetics that naturally occurring genes are unpatentable. The court ...
(Date:4/22/2014)... organizations have presented Beaumont Health System with prestigious, ... from both athletic and nonathletic injuries. , ... a $40,000 grant to fund stem cell-based research ... like a ruptured knee anterior cruciate ligament, or ... "An anterior cruciate ligament injury is the over-stretching ...
Breaking Biology News(10 mins):Best practices in communication for the animal world 2Best practices in communication for the animal world 3New patenting guidelines are needed for biotechnology 2New patenting guidelines are needed for biotechnology 3Beaumont awarded grants to study sports-related injury treatment, improve recovery 2
... A new Cornell study finds that serving children combined snacks of ... and be just as satisfied as those who were served ... they take longer to eat than potato chips. This is ... less," said Brian Wansink, professor of marketing at the Charles H. ...
... is available in German . Multidrug-resistant ... worldwide. Propagation of bacterial resistance is alarming and makes the ... Planck Institute for Biophysical Chemistry in Gttingen have now identified ... EF-P plays a crucial role in the production of proteins ...
... Spanish . , The U.S. Department ... (DOD) have joined forces to create effective barriers and ... Scientists at the Agricultural Research Service (ARS) ... Gainesville, Fla., are evaluating insecticides, testing pesticide application equipment, ...
Cached Biology News:Combo-snacks of cheese and vegetables cut kids calories 2Achilles' heel of pathogenic bacteria discovered 2Achilles' heel of pathogenic bacteria discovered 3Arming US troops with insect-protective gear 2
(Date:1/15/2014)... , Jan. 15, 2014  Bill Jacobs Automotive, a group of ... teaming up with the Heartland Blood Center and offering free ... The drive takes place Saturday, Jan. 18 at the Bill ... p.m. (Photo: http://photos.prnewswire.com/prnh/20140115/MN46637 )  The ...
(Date:1/15/2014)... IL (PRWEB) January 15, 2014 Look ... find hard-working items for the lab, from fluid handling ... Guaranteed-in-Stock (GIS)—ready to ship when you order. , ... Peristaltic Pumps , from the L/S® model for precise ...
(Date:1/15/2014)... Jan. 15, 2014 ­ RedBrick Health , a ... technology, today announces that EmblemHealth , the ... company, is now providing the RedBrick Compass health assessment, ... to all of its members. EmblemHealth is among the ...
(Date:1/15/2014)... 15, 2014 More than 5 million ... 1 in 3 seniors will die with Alzheimer’s or ... jaw-dropping figures have shocked many Americans into looking for ... prevent these tragic age-related cognitive disorders. Jonathan Weisman, president ...
Breaking Biology Technology:Join the Bill Jacobs Auto blood drive and receive a free oil change 2Cole-Parmer Begins 2014 with the Release of Preferred Solutions 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 3Biohack Pure Offers 5 Tips for Increasing Memory in 2014 2
... director of the Division of Information Technology (DOIT) at ... for information technology leadership from the national organization ... and ground-breaking leadership in the information technology business since ... , ,A co-founder and executive director of the Northern ...
... Wis. -- The National Institute for General Medical Sciences ... SBIR Phase II grant, while the National Cancer Institute ... grant, the Madison-based company reported Thursday. , ,The General ... optimization and validation of a fluorescent HTS assay for ...
... Good news for some of Madisons emerging technology ... week. These investments and grants will help to ... Alfalight, a UW-Madison spinout company that manufacturers ... nearly $6 million in military funding. Meanwhile, another ...
Cached Biology Technology:BellBrook Labs gets major research funding 2
... PCR carry-over contamination, which prevents false ... products from previous PCR amplifications without ... improves amplification ,Optimized for use with ... instrument systems , The GeneAmp PCR ...
... that catalyzes the hydrolysis of,starch to ... dextrins. The,level of a-amylase in various ... of,clinical significance in the diagnosis of ... and microbial a-amylases are,important enzymes for ...
... The Thermo Labsystems Wellmix is a ... and time settings. The shaking speed is ... shaking frequency, high speed and a small ... assays. The shaking time is quick and ...
Rabbit polyclonal to STUB1 ( Abpromise for all tested applications). entrezGeneID: 10273 SwissProtID: Q9UNE7...
Biology Products: