In a noisy world, how can the senses project and receive information at the same time?

April 1, 2003 (Bethesda, MD) How do we hear when some of us chatter all day? When we sing in the shower, why doesnt the active voice smother the rest of our bodys sensory systems? The answer to these questions may be found in the simple male cricket (Gryllus bimaculatus), which sing for hours at over 100 decibels sound pressure levels (dB SPL) in order to attract females.

The songs of crickets (except the one from Disneys famous character, Jiminy Cricket, are generated by rhythmically rubbing the fore wings together resulting in a form of sound production called stridulation. As crickets ears are located on the forelegs, they are fully exposed to the self-generated sounds. Many animals reduce the responsiveness of their peripheral auditory system during sound production, but crickets do not. Despite this, behavioral experiments have shown that singing crickets can respond to external sounds.

A modulation in the sensitivity to reafferent (self-generated) stimulation by centrally generated neural signals has been identified in a variety of sensory systems, e.g., visual, electroreceptive, proprioceptive (perception at the subconscious level), and mechanoreceptive. A reduction in the responsiveness of auditory neurons in the brain has been recorded in humans and other vertebrates during vocalization, but the nature and source of the inhibition has never been characterized.

Crickets sing so loudly that reafferent sound could be confused with external sound and/or desensitize the crickets own auditory system. One solution to this problem could be to modulate the biophysical sensitivity of the ear during sound production. However, the tympanic membrane of the cricket remains fully responsive during stridulation.

A New Study
Researchers have examined how their central and simple auditory system copes with the intense reafferent stimulation through desensitizing effect of loud sounds on the responsi

Contact: Donna Krupa
American Physiological Society

Page: 1 2 3

Related biology news :

1. Study shows how consensus is attained in a noisy world
2. Warmer world will be a sicker world, say scientists
3. Screensavers of the world, unite!
4. Gobbling food helps threadsnakes avoid danger; in a snake-eat-ant world, its survival of the fastest
5. Deciphering the genetic basis of the mosquitos senses
6. Movement without senses coded into neurons, says University of Toronto researcher
7. New portable device senses chemical weapons
8. Researchers identify molecule that senses osmotic pressure in vertebrates
9. Simple and inexpensive, an artificial nose senses smell by seeing colors
10. NSF awards 22 new projects for plant genome research
11. NSF and AIBS sign cooperative agreement for NEON project office

Post Your Comments:

(Date:5/16/2017)... 2017  Veratad Technologies, LLC ( www.veratad.com ), an ... identity verification solutions, announced today they will participate as ... 15 thru May 17, 2017, in Washington ... Center. Identity impacts the lives of ... quickly evolving digital world, defining identity is critical to ...
(Date:4/19/2017)... 2017 The global military biometrics ... marked by the presence of several large global players. ... five major players - 3M Cogent, NEC Corporation, M2SYS ... nearly 61% of the global military biometric market in ... global military biometrics market boast global presence, which has ...
(Date:4/13/2017)... According to a new market research report "Consumer IAM Market by ... Service, Authentication Type, Deployment Mode, Vertical, and Region - Global Forecast to ... USD 14.30 Billion in 2017 to USD 31.75 Billion by 2022, at ... ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... Angeles, CA (PRWEB) , ... ... ... Inc., a development-stage cancer-focused pharmaceutical company advancing targeted antibody-drug conjugate (ADC) therapeutics, ... uses of targeted HPLN (Hybrid Polymerized Liposomal Nanoparticle), a technology developed in ...
(Date:10/10/2017)... ... October 10, 2017 , ... ... business process optimization firm for the life sciences and healthcare industries, announces a ... in San Francisco. , The presentation, “Automating GxP Validation for Agile Cloud Platforms,” ...
(Date:10/9/2017)... (PRWEB) , ... October 09, 2017 , ... ... a four-tiered line of medical marijuana products targeting the needs of consumers who ... packaging of Kindred takes place in Phoenix, Arizona. , As operators of two ...
(Date:10/6/2017)... ... October 06, 2017 , ... The ... and technology sector at their fourth annual Conference where founders, investors, innovative practitioners ... and the ELEVATE pitch competition showcasing early stage digital health and med tech ...
Breaking Biology Technology:
Cached News: