HOME >> BIOLOGY >> NEWS
Hormones may affect how brain listens, Emory study finds

From zebra fish to humans, reproductive hormones govern behavioral responses to courtship signals. A new Emory University study conducted in songbirds suggests that hormones may also modulate the way the auditory system processes courtship signals. In other words, hormones may affect how the birds actually listen to courtship songs at certain times of the year when it's time to reproduce.

Like many animals, songbirds put on their reproductive song and dance routine each spring: Male birds perform their finest songs, and female birds respond, hormonally prepped for the breeding season. In this research, Emory neuroscientist Donna Maney examined the auditory areas of the brain to see how estrogen affects the selectivity of song-induced gene expression. Dubbed the "genomic response," this is a highly specific process wherein genes are turned on to perform as they're programmed.

"Our work suggests that estrogen, which is normally high only during the breeding season, may actually alter auditory pathways and centers," Maney says. "The changes in gene expression reflect changes in the brain that are related to auditory learning and attention."

In the study, published in the current issue of the European Journal of Neuroscience, Maney and her research group compared estrogen-treated female white-throated sparrows with females not treated with hormones. The birds listened to recordings of either seductive male song or synthetic, frequency-matched beeps.

The birds reacted as expected to the songs, with the hormone-treated females responding by performing their mating moves -- known as "copulation solicitation" -- whereas the untreated females remained unimpressed and did not respond with courtship displays. Both groups essentially ignored the beeps. Although the genomic response in the auditory systems of the hormone-treated females was much higher in response to song than to beeps, as expected, in the untreated females it was the same for th
'"/>

Contact: Beverly Cox Clark
beverly.clark@emory.edu
404-712-8780
Emory University Health Sciences Center
3-May-2006


Page: 1 2

Related biology news :

1. Hormones and growth: The control of body size and developmental growth rate in fruit flies
2. Strength of connections between brain regions may affect an adolescents response to peer influence
3. Pediatric ritalin use may affect developing brain, new study suggests
4. Brightly colored birds most affected by Chernobyl radiation
5. Loss of hemlocks will affect water dynamics in southern Appalachian forests
6. Common environmental chemicals in diet affect fetal ovarian development
7. New clue why MS affects African-Americans differently than Caucasians
8. Sleep deprivation affects airport baggage screeners ability to detect rare targets
9. Economic impact of hunger affects all Americans
10. Sexual orientation affects how we navigate and recall lost objects, but age just targets gender
11. How does day length affect aggression in mice? Its in the genes

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/5/2017)... Allen Institute for Cell Science today announces the launch ... dynamic digital window into the human cell. The website ... deep learning to create predictive models of cell organization, ... suite of powerful tools. The Allen Cell Explorer will ... resources created and shared by the Allen Institute for ...
(Date:3/30/2017)... 30, 2017  On April 6-7, 2017, Sequencing.com will ... hackathon at Microsoft,s headquarters in ... focus on developing health and wellness apps that provide ... the Genome is the first hackathon for personal ... largest companies in the genomics, tech and health industries ...
(Date:3/27/2017)... N.Y. , March 27, 2017  Catholic ... Information and Management Systems Society (HIMSS) Analytics for ... EMR Adoption Model sm . In addition, CHS ... of U.S. hospitals using an electronic medical record ... for its high level of EMR usage in ...
Breaking Biology News(10 mins):
(Date:7/17/2017)... ... 17, 2017 , ... Panitch Schwarze Belisario & Nadel ... BiG (Biomedical Innovation Group) annual meeting in China. , This year’s meeting, held ... T-cell) therapy, a rapidly developing highly personalized anti-cancer technology that involves removing some ...
(Date:7/16/2017)... ... July 16, 2017 , ... ... analytical instruments announced the launch of its new line of Rocking and Waving ... and waving shaker models (both analog and digital) for laboratory applications in a ...
(Date:7/14/2017)... , ... July 14, 2017 , ... ... EMS company . Sonic Manufacturing Technologies has installed a solar system on its ... a three-year period,” the President of Sonic, Kenneth Raab stated. The company’s proud ...
(Date:7/14/2017)... Liege, Belgium/ Denville, USA/ Martinsried, Germany (PRWEB) , ... ... ... today announced a newly developed standardized solution for sample preparation of proteins to ... Kit) and the Diagenode Bioruptor® sonication system. , The PreOmics iST Kit ...
Breaking Biology Technology:
Cached News: