Navigation Links
Researcher finds gender differences in seasonal auditory changes
Date:12/10/2012

ATLANTA Auditory systems differ between sexes in sparrows depending on the season, a Georgia State University neuroscientist has found. The work adds to our knowledge of how the parts of the nervous system, including that of humans, are able to change.

Megan Gall, a post-doctoral researcher with Georgia State's Neuroscience Institute, tested the peripheral auditory systems of male and female house sparrows, comparing the hearing of each gender during non-breeding seasons and breeding seasons.

Gall measured frequency selectivity the ability to tell sounds that are close in frequency apart, and temporal resolution, the ability to tell sounds apart that are very close together in time.

"We found that males have the same frequency selectivity and temporal resolution across breeding seasons," Gall said. "In the fall, males and females aren't different. But in the breeding season, females had better frequency selectivity, but this came at the expense of worse temporal resolution."

The study was published in the Proceedings of the Royal Society B, a British scientific journal.

The difference shows "plasticity," the ability to change, she said. Plasticity is an important concept in neuroscience, as scientists have increasingly been able to show that neurological systems have the ability to change.

Gall said the work shows, for the first time, that there's seasonal plasticity in these properties in the periphery of the auditory system, the ear and the auditory nerve, not just inside the parts of the brain that control auditory function.

Similar changes happen in humans, she said. Women show different auditory sensitivities during the course of a menstrual cycle.

"I always like to say that if your husband says he can't hear you, it may be that he can't. His auditory system is different than yours," Gall said.

The changes might have evolved over time for different reasons, she said, with one reason being that it is harder for the body to maintain a certain kind of tissues involved in hearing.

"In the ear, there are huge electrical gradients between the hair cells and the fluid that's bathing the hair cells in the ear, and that's expensive to maintain," she said. "Another possible reason is that there are other stimuli that you are concerned about during the non-breeding season.

"These birds live in an environment where it gets cold, it's hard to find food and they make calls that tell other individuals where that food is. So everybody wants to hear the call in the same way so that they all respond to that signal."

Alarm calls, warnings that a predator or predators are coming, might also require different kinds of auditory processing.


'/>"/>

Contact: Jeremy Craig
jcraig@gsu.edu
404-413-1357
Georgia State University
Source:Eurekalert

Related biology news :

1. Researchers find new genetic pathway behind neurodevelopmental disorders
2. Researchers investigate impacts of climate change on rare tropical plants
3. Researchers identify proteins that indicate which kidney tumors are most likely to spread
4. Microchoreography: Researchers use synthetic molecule to guide cellular dance
5. Einstein researchers receive 2 Grand Challenges Explorations grants to combat HIV and TB
6. University of Tennessee researchers find fungus has cancer-fighting power
7. UC Davis researchers aid effort to sequence the complex wheat genome
8. UF researcher tests powerful new tool to advance ecology, conservation
9. Joslin researchers increase understanding of genetic risk factor for type 1 diabetes
10. Fracking in Michigan: U-M researchers study potential impact on health, environment, economy
11. NREL researchers use imaging technologies to solve puzzle of plant architecture
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/15/2016)... 2016 Transparency Market Research ... Market by Application Market - Global Industry Analysis Size Share ... the report, the  global gesture recognition market  was ... is estimated to grow at a CAGR of ... Increasing application of gesture recognition technology ...
(Date:6/2/2016)... , June 2, 2016 The ... has awarded the 44 million US Dollar project, for ... Embossed Vehicle Plates including Personalization, Enrolment, and IT Infrastructure ... leader in the production and implementation of Identity Management Solutions. ... January, however Decatur was selected for ...
(Date:5/20/2016)... MINNEAPOLIS , May 20, 2016  VoiceIt ... technology partnership with VoicePass. By working ... user experience.  Because VoiceIt and VoicePass take slightly ... two engines increases both security and usability. ... expressed excitement about this new partnership. ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... CA (PRWEB) , ... June 27, 2016 , ... ... for clinical trials, announced today the Clinical Reach Virtual Patient Encounter CONSULT ... care circle with the physician and clinical trial team. , Using the CONSULT module, ...
(Date:6/27/2016)... June 27, 2016   Ginkgo Bioworks , a ... engineering, was today awarded as one of the ... the world,s most innovative companies. Ginkgo Bioworks is ... the real world in the nutrition, health and ... directly with customers including Fortune 500 companies to ...
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita Politecnica delle Marche ... with peritoneal or pleural mesothelioma. Their findings are the subject of a new article ... Diagnostic biomarkers are signposts in the blood, lung fluid or tissue of mesothelioma patients ...
(Date:6/23/2016)... June 23, 2016 /PRNewswire/ - FACIT has announced ... biotechnology company, Propellon Therapeutics Inc. ("Propellon" ... commercialization of a portfolio of first-in-class WDR5 inhibitors ... such as WDR5 represent an exciting class of ... precision medicine for cancer patients. Substantial advances have ...
Breaking Biology Technology: