Featured Research

from universities, journals, and other organizations

Sensory Feedback During Speech: The Brain Attunes To More Than Just Sound

Date:
October 11, 2006
Source:
Cell Press
Summary:
Using robotics to manipulate the brain's perception of jaw movement while words are spoken, researchers have deepened our understanding of the importance of non-auditory sensory cues in the brain's control of speech. The findings are reported by Sazzad Nasir and David Ostry of McGill University and appear in the October 10th issue of the journal Current Biology, published by Cell Press.

Using robotics to manipulate the brain's perception of jaw movement while words are spoken, researchers have deepened our understanding of the importance of non-auditory sensory cues in the brain's control of speech. The findings are reported by Sazzad Nasir and David Ostry of McGill University and appear in the October 10th issue of the journal Current Biology, published by Cell Press.

When we speak, our ability to effectively produce words is dependent not only on auditory feedback signals to the brain, but also on so-called somatosensory information that informs the brain of the relative positioning of different parts of the body--a process known as proprioception. Cues of this sort that might be relevant during speech include those that inform the brain of the openness of the jaw or the changing positions of the tongue or lips.

To investigate how such somatosensory cues are used during speech production, the researchers in the new work were able to dissociate the contribution of these cues from auditory cues by using a robotic device that slightly altered the path of the jaw's motion at different points during speech, but did not significantly disrupt the acoustic quality of the words being spoken. The researchers were able to manipulate jaw motion at specific points during speaking and were thereby able to specifically target vowel or consonant sounds to study whether the production of certain types of sound was especially sensitive to somatosensory cues. The researchers found that over time, the subjects in the experiments learned to compensate for the robotic interference, thereby "correcting" the somatosensory feedback the brain receives during speech. This learning took place even when speech sounded normal, and it occurred when the robotic interference was applied during both vowel and consonant sound production.

The findings support the idea that accurate acoustic quality is not the brain's only goal during the motor control of speech--precision in expected somatosensory feedback cues is also an important endpoint.

The researchers include Sazzad M. Nasir of McGill University in Montreal, Qu้bec, Canada and David J. Ostry of McGill University in Montreal, Qu้bec, Canada and Haskins Laboratories in New Haven, Connecticut.

This research was supported by National Institute of Deafness and Communicative Disorders grant DC-04669, the Natural Sciences and Engineering Research Council of Canada, and Fonds qu้b้cois de la recherche sur la nature et les technologies.

Nasir et al.: "Somatosensory Precision in Speech Production." Publishing in Current Biology 16, 1918--1923, October 10, 2006 DOI 10.1016/j.cub.2006.07.069. http://www.current-biology.com


Story Source:

The above story is based on materials provided by Cell Press. Note: Materials may be edited for content and length.


Cite This Page:

Cell Press. "Sensory Feedback During Speech: The Brain Attunes To More Than Just Sound." ScienceDaily. ScienceDaily, 11 October 2006. <www.sciencedaily.com/releases/2006/10/061010022806.htm>.
Cell Press. (2006, October 11). Sensory Feedback During Speech: The Brain Attunes To More Than Just Sound. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2006/10/061010022806.htm
Cell Press. "Sensory Feedback During Speech: The Brain Attunes To More Than Just Sound." ScienceDaily. www.sciencedaily.com/releases/2006/10/061010022806.htm (accessed October 20, 2014).

Share This



More Mind & Brain News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Court Ruling Means Kids' Online Activity Could Be On Parents

Court Ruling Means Kids' Online Activity Could Be On Parents

Newsy (Oct. 17, 2014) — In a ruling attorneys for both sides agreed was a first of its kind, a Georgia appeals court said parents can be held liable for what kids put online. Video provided by Newsy
Powered by NewsLook.com
The Best Foods To Boost Your Mood

The Best Foods To Boost Your Mood

Buzz60 (Oct. 17, 2014) — Feeling down? Reach for the refrigerator, not the medicine cabinet! TC Newman (@PurpleTCNewman) shares some of the best foods to boost your mood. Video provided by Buzz60
Powered by NewsLook.com
You Can Get Addicted To Google Glass, Apparently

You Can Get Addicted To Google Glass, Apparently

Newsy (Oct. 15, 2014) — Researchers claim they’ve diagnosed the first example of the disorder in a 31-year-old U.S. Navy serviceman. Video provided by Newsy
Powered by NewsLook.com
First Confirmed Case Of Google Glass Addiction

First Confirmed Case Of Google Glass Addiction

Buzz60 (Oct. 15, 2014) — A Google Glass user was treated for Internet Addiction Disorder caused from overuse of the device. Morgan Manousos (@MorganManousos) has the details on how many hours he spent wearing the glasses, and what his symptoms were. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins