Featured Research

from universities, journals, and other organizations

Brain region responsible for speech illusion identified; Study explains how visual cues disrupt speech perception

Date:
November 17, 2010
Source:
Society for Neuroscience
Summary:
Watching lips move is key to accurately hearing what someone says. The McGurk Effect, an auditory phenomenon in which viewing lips moving out of sync with words creates other words, has been known since the 1970s; now researchers have pinpointed the brain region responsible for it.

Watching lips move is key to accurately hearing what someone says. The McGurk Effect, an auditory phenomenon in which viewing lips moving out of sync with words creates other words, has been known since the 1970s; now researchers have pinpointed the brain region responsible for it.

The findings were presented at Neuroscience 2010, the annual meeting of the Society for Neuroscience, held in San Diego.

Scientists at the University of Texas Medical School found that the superior temporal sulcus, known to play a role in language and eye gaze processing, is the hub of the sensory overlap. In the study, researchers first had volunteers experience the McGurk Effect while undergoing functional magnetic resonance imaging (fMRI). The fMRI showed the authors which part of the brain was active during the effect.

The activity in that region was then disrupted using transcranial magnetic stimulation, while participants remarked on what they heard during the speech and vision tests. The researchers discovered that the McGurk Effect disappeared when they targeted the superior temporal sulcus. As importantly, the participants perceived other sounds and sights normally.

"These results demonstrate that the superior temporal sulcus plays a critical role in the McGurk Effect and auditory- visual integration of speech," said Michael Beauchamp, PhD, who led the study.

Research was supported by the National Science Foundation and the National Institute of Neurological Disorders and Stroke.


Story Source:

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


Cite This Page:

Society for Neuroscience. "Brain region responsible for speech illusion identified; Study explains how visual cues disrupt speech perception." ScienceDaily. ScienceDaily, 17 November 2010. <www.sciencedaily.com/releases/2010/11/101116210236.htm>.
Society for Neuroscience. (2010, November 17). Brain region responsible for speech illusion identified; Study explains how visual cues disrupt speech perception. ScienceDaily. Retrieved August 22, 2014 from www.sciencedaily.com/releases/2010/11/101116210236.htm
Society for Neuroscience. "Brain region responsible for speech illusion identified; Study explains how visual cues disrupt speech perception." ScienceDaily. www.sciencedaily.com/releases/2010/11/101116210236.htm (accessed August 22, 2014).

Share This




More Mind & Brain News

Friday, August 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Lost Brain Cells To Blame For Sleep Problems Among Seniors

Lost Brain Cells To Blame For Sleep Problems Among Seniors

Newsy (Aug. 21, 2014) According to a new study, elderly people might have trouble sleeping because of the loss of a certain group of neurons in the brain. Video provided by Newsy
Powered by NewsLook.com
Do More Wedding Guests Make A Happier Marriage?

Do More Wedding Guests Make A Happier Marriage?

Newsy (Aug. 20, 2014) A new study found couples who had at least 150 guests at their weddings were more likely to report being happy in their marriages. Video provided by Newsy
Powered by NewsLook.com
Charter Schools Alter Post-Katrina Landscape

Charter Schools Alter Post-Katrina Landscape

AP (Aug. 20, 2014) Nine years after Hurricane Katrina, charter schools are the new reality of public education in New Orleans. The state of Louisiana took over most of the city's public schools after the killer storm in 2005. (Aug. 20) Video provided by AP
Powered by NewsLook.com
Researcher Testing on-Field Concussion Scanners

Researcher Testing on-Field Concussion Scanners

AP (Aug. 19, 2014) Four Texas high school football programs are trying out an experimental system designed to diagnose concussions on the field. The technology is in response to growing concern over head trauma in America's most watched sport. (Aug. 19) Video provided by AP
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:
from the past week

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