Navigation Links
What songbirds tell us about how we learn

This news release is available in French.



Along with researchers from the University of California, San Francisco, Indian Institute of Science Education and Research and Duke University, Professor Woolley investigated this question in songbirds, which learn their songs during development in a manner similar to how humans learn to speak. In particular, songbirds memorize the song of their father or tutor, then practice that song until they can produce a similar song.

"As adults, they continue to produce this learned song, but what's interesting is that they keep it just a little bit variable" says Woolley. "The variability isn't a default, it isn't that they can't produce a better version, they can -- in particular when they sing to a female. So when they sing alone and their song is variable it's because they are actively making it that way."

The team used this change in the variability of the song to look at how the activity of single cells in different parts of the brain altered their activity depending on the social environment.

"We found that the social modulation of variability emerged within the basal ganglia, a brain area known to be important for learning and producing movements not only in birds but also in mammals, including humans" says Woolley. "This indicates that one way that the basal ganglia may be important in motor learning across species is through its involvement in generating variability."

The researchers studied song birds because they have a cortical-basal ganglia circuit that is specific for singing. In contrast, for most behaviors in other species, the cortical-basal ganglia cells and circuits that are important for particular behaviors, like learning to walk, may be situated right next to, or even intermingled with cells and circuits important for other behaviors. "The evolution in songbirds of an identifiable circuit for a single complex behavior gives us a tremendous advantage as we try to parse out exactly what these parts of the brain do and how they do it," says Woolley.

Useful for Parkinson's disease

The basal ganglia is dramatically affected in illnesses such as Parkinson's and Huntington disease. The team's findings may eventually be relevant to understanding changes to learning and flexibility in movement that occur in those diseases.

"These are the kind of questions that we are now starting to pursue in the lab: how variability is affected when you radically manipulate the system akin to what happens during disease", says Woolley.


Contact: Cynthia Lee
McGill University

Related biology news :

1. Songbirds learning hub in brain offers insight into motor control
2. Restoring streamside forests helps songbirds survive the winter in Californias Central Valley
3. Its a bird, not a plane: York U study finds migrating songbirds depart on time
4. Doing the math for how songbirds learn to sing
5. Songbirds turn on and tune up
6. Testosterone in male songbirds may enhance desire to sing but not song quality
7. Presence of humans and urban landscapes increase illness in songbirds, researchers find
8. Teaching about hearing can save young peoples ears
9. A birds song may teach us about human speech disorders
10. Fielding questions about climate change
11. New research about facial recognition turns common wisdom on its head
Post Your Comments:
Related Image:
What songbirds tell us about how we learn
Breaking Biology News(10 mins):
Breaking Biology Technology: