Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Mu-rhythm in the brain: The neural mechanism of speech as an audio-vocal perception-action system

05.12.2012
The cortical mechanisms governing speech are not well understood because it is extremely challenging to measure the activity of the brain in action, that is, during speech production. Researchers in Japan have found modulation of mu-rhythms in the cortex related to speech production.
Speech production is one of the most important components in human communication. However, the cortical mechanisms governing speech are not well understood because it is extremely challenging to measure the activity of the brain in action, that is, during speech production.

Now, Takeshi Tamura and Michiteru Kitazaki at Toyohashi University of Technology, Atsuko Gunji and her colleagues at National Institute of Mental Health, Hiroshige Takeichi at RIKEN, and Hiroaki Shigemasu at Kochi University of Technology have found modulation of mu-rhythms in the cortex related to speech production.

The researchers measured EEG (electroencephalogram) with pre-amplified electrodes during simulated vocalization, simulated vocalization with delayed auditory feedback, simulated vocalization under loud noise, and silent reading. The authors define ‘mu-rhythm’ as a decrease of power in 8-16Hz EEG during the task period.

The mu-rhythm at the sensory-motor cortical area was not only observed under all simulated vocalization conditions, but was also found to be boosted by the delayed feedback and attenuated by loud noises. Since these auditory interferences influence speech production, it supports the premise that audio-vocal monitoring systems play an important role in speech production. The motor-related mu-rhythm is a critical index to clarify neural mechanisms of speech production as an audio-vocal perception-action system.

In the future, a neurofeedback method based on monitoring mu-rhythm at the sensory-motor cortex may facilitate rehabilitation of speech-related deficits.

Adarsh Sandhu | Research asia research news
Further information:
http://www.tut.ac.jp/english/
http://www.researchsea.com
http://www.researchsea.com/html/article.php/eml/1/aid/7523/cid/3

More articles from Health and Medicine:

nachricht NAMS issues first comprehensive recommendations on care of women at menopause and beyond
17.09.2014 | The North American Menopause Society (NAMS)

nachricht Researchers debunk myth about Parkinson's disease
16.09.2014 | University of Copenhagen – The Faculty of Health and Medical Sciences

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

"Start-ups and spin-offs funding – Public and private policies", 14th October 2014

12.09.2014 | Event News

BALTIC 2014: Baltic Sea Geologists meet in Warnemünde

03.09.2014 | Event News

IT security in the digital society

27.08.2014 | Event News

 
Latest News

Smallest VGA-resolution infrared camera worldwide

17.09.2014 | Press release

And So They Beat on, Flagella Against the Cantilever

17.09.2014 | Physics and Astronomy

Consumers Will Pay More for Eco-Friendly Plants, Study Shows

17.09.2014 | Studies and Analyses

VideoLinks
B2B-VideoLinks
More VideoLinks >>>