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:8/29/2014)... been known about what genetic changes transform wild animals ... of whom is a University of Montana assistant professor, ... the development of the brain and the nervous system ... published Aug. 28 in Science and gives ... http://www.sciencemag.org/ ., The domestication of animals and plants, ...
(Date:8/29/2014)... To understand how the repeated climatic shifts over ... patterns of genetic diversity, a team of researchers ... Dr. Ana Carnaval developed a new biodiversity metric ... to which the genetic variation within species is ... assistant professor of biology, and 14 other researchers ...
(Date:8/29/2014)... release is available in German . ... players in the natural nitrogen cycle on Earth and ... bacteria were thought to depend on nitrite as their ... by Holger Daims, a microbiologist at the University of ... hydrogen as an alternative source of energy. The oxidation ...
Breaking Biology News(10 mins):New research reveals how wild rabbits were genetically transformed into tame rabbits 2New research reveals how wild rabbits were genetically transformed into tame rabbits 3CCNY team defines new biodiversity metric 2Hydrogen powers important nitrogen-transforming bacteria 2Hydrogen powers important nitrogen-transforming bacteria 3
... University announced today the appointment of James E. Rothman, ... of Yale School of Medicine,s Department of Cell Biology. ... Cell Biology at Yale,s West Campus, formerly the site ... from Columbia University,s College of Physicians and Surgeons, where ...
... Eye Research Institute have identified specific molecules in the ... sleep brain stem cells, which, when activated, can transform ... Their findings are published online this week in the ... An earlier paper (published in the May ...
... this week that they are the first to observe ... the act of building proteins from genetic blueprints. ... reveals a key mechanism in the interplay of molecules ... sustain life. Cells use a variety of tools ...
Cached Biology News:Leading scientist named new chair of Cell Biology at Yale 2Leading scientist named new chair of Cell Biology at Yale 3 Brain stem cells can be awakened, say Schepens scientists 2Researchers observe spontaneous 'ratcheting' of single ribosome molecules 2Researchers observe spontaneous 'ratcheting' of single ribosome molecules 3
(Date:8/28/2014)... “This kit has an improved extraction efficiency ... to 150 ppb,” said Mark Tess, PhD, Mycotoxin Product Manager ... plant owners and USDA-GIPSA inspection agencies that have a need ... take place in a matter of minutes with nothing but ... the feed and grain before accepting it, but they no ...
(Date:8/28/2014)... NEW YORK , Aug. ... announces that a new market ... its catalogue: Whole ... (Systems, Kits (Library Preparation, Target ... Technology (Sequencing by Synthesis), by ...
(Date:8/28/2014)... , Aug. 28, 2014   SunTrust Robinson Humphrey ... industry veterans to its equity research team in ... ongoing expansion in equity research demonstrates our commitment ... insights to enhance their investment decision making," said ... STRH.  "We continue to make significant investments in ...
(Date:8/28/2014)... work by a Florida State University research team has ... your temperature, emit white light, and convert photon energy ... like a butterfly. , Biwu Ma, associate professor in ... FAMU-FSU College of Engineering, created the molecule in a ... discover that his creation has many other unique capabilities. ...
Breaking Biology Technology:Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 2Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 3Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 4Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 5Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 6Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 7Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 8Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 9Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 10Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 11Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 12Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 13SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 2SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 3Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices 2
... RALEIGH, N.C., May 16 Campbell Alliance, the ... biotech,industry, today announced that it will present a ... (SPBT) Annual Conference to be held May,19-22, 2008 ... Florida., On Wednesday, May 21 at 9:45 ...
... Program to Recognize Exemplary Work ... ... magazine announced the winner,and finalists of its 2008 Extraordinary Healer ... Society,s (ONS) 33rd Annual,Congress. Ortho Biotech Products, L. P. sponsored ...
... N.J., May 16 Senesco,Technologies, Inc. ("Senesco" or the "Company") ... months ended March 31, 2008., Net loss for the ... $0.12 per share, compared with a net loss of $0.8 ... March 31, 2007. This,increase in net loss was primarily the ...
Cached Biology Technology:Campbell Alliance Sales Practice to Present Workshop at SPBT Annual Conference 2Campbell Alliance Sales Practice to Present Workshop at SPBT Annual Conference 3CURE Magazine Announces Winner of 2008 Extraordinary Healer Award 2Senesco Technologies Reports Third Quarter Fiscal 2008 Financial Results 2Senesco Technologies Reports Third Quarter Fiscal 2008 Financial Results 3Senesco Technologies Reports Third Quarter Fiscal 2008 Financial Results 4Senesco Technologies Reports Third Quarter Fiscal 2008 Financial Results 5Senesco Technologies Reports Third Quarter Fiscal 2008 Financial Results 6Senesco Technologies Reports Third Quarter Fiscal 2008 Financial Results 7Senesco Technologies Reports Third Quarter Fiscal 2008 Financial Results 8
... The JNK (c-Jun NH2-terminal kinase) ... three identified MAP kinase pathways in ... response to environmental stress, is associated ... itself, and is implicated in the ...
... knockdown of all human, mouse, and ... Genomewide, predesigned siRNAs for a ... , Ready-to-use, convenient matching solutions for ... Cost-effective RNAi and downstream analysis ...
... were designed for full-length gene cloning and ... identify the desired cDNA clone. The first ... "Master Plate," where each well contains plasmid ... positive well(s) by gel electrophoresis of the ...
... System, which processes two 96-well plates and tracks ... higher level of throughput to the CEQ product ... Coulters new GenomeLab family of products*, also offers ... liquid handers, for increased automation. The CEQ ...
Biology Products: