Featured Research

from universities, journals, and other organizations

What you see changes where you hear: Exposure to light for only milliseconds alters perceived source of sound

Date:
November 17, 2010
Source:
Society for Neuroscience
Summary:
New research shows that the perceived location of a noise depends in part on the sights noticed before the sound. The results have implications for the development of hearing aids and rehabilitation from brain injury.

New research shows that the perceived location of a noise depends in part on the sights noticed before the sound. The results have implications for the development of hearing aids and rehabilitation from brain injury.

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

"The auditory map of space is not static like the world atlas," said lead author Ladan Shams, PhD, of the University of California, Los Angeles. "Instead, it can change from one moment to the next."

People navigate their surroundings based on maps built by sensory perceptions from their eyes, ears, and other senses. The brain combines these maps into a single experience. What happens, however, when one perception is flawed and becomes out of sync with the others? Studies show that when one of the sensory maps is wrong, the others will recalibrate to make it consistent and more accurate. But while previous studies held that this correction only occurs after hundreds or thousands of errors, new research shows that recalibration happens only a fraction of a second after an incident.

In this study, the researchers exposed 146 participants to 35-millisecond bursts of radio static-like noise, as well as flashes of light. In some trials, the lights and sounds were simultaneous; in others, there was static only. The researchers found that the perceived location of a sound was influenced by the direction of the flash in the previous trial. For example, if in the previous test the flash was to the left of the sound, the volunteer's perception of the sound alone in the next test was shifted to the left.

"This is the first evidence that sensory recalibration can occur rapidly, not after days or even seconds, but after milliseconds of exposure to discrepancy," Shams said. "This indicates that the recalibration of auditory space does not require a large amount of evidence to become triggered, and instead operates at all times."

Research was supported by the University of California, Los Angeles, and the National Institute of Biomedical Imaging and Bioengineering.


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. "What you see changes where you hear: Exposure to light for only milliseconds alters perceived source of sound." ScienceDaily. ScienceDaily, 17 November 2010. <www.sciencedaily.com/releases/2010/11/101116210501.htm>.
Society for Neuroscience. (2010, November 17). What you see changes where you hear: Exposure to light for only milliseconds alters perceived source of sound. ScienceDaily. Retrieved April 19, 2014 from www.sciencedaily.com/releases/2010/11/101116210501.htm
Society for Neuroscience. "What you see changes where you hear: Exposure to light for only milliseconds alters perceived source of sound." ScienceDaily. www.sciencedaily.com/releases/2010/11/101116210501.htm (accessed April 19, 2014).

Share This



More Mind & Brain News

Saturday, April 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Study On Artists' Brain Shows They're 'Structurally Unique'

Study On Artists' Brain Shows They're 'Structurally Unique'

Newsy (Apr. 17, 2014) The brains of artists aren't really left-brain or right-brain, but rather have extra neural matter in visual and motor control areas. Video provided by Newsy
Powered by NewsLook.com
Is Apathy A Sign Of A Shrinking Brain?

Is Apathy A Sign Of A Shrinking Brain?

Newsy (Apr. 17, 2014) A recent study links apathetic feelings to a smaller brain. Researchers say the results indicate a need for apathy screening for at-risk seniors. Video provided by Newsy
Powered by NewsLook.com
Are School Dress Codes Too Strict?

Are School Dress Codes Too Strict?

AP (Apr. 16, 2014) Pushing the limits on style and self-expression is a rite of passage for teens and even younger kids. How far should schools go with their dress codes? The courts have sided with schools in an era when school safety is paramount. (April 16) Video provided by AP
Powered by NewsLook.com
Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. Video provided by Newsy
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