Navigation Links
Researchers unlock the 'sound of learning' by linking sensory and motor systems
Date:11/2/2009

Learning to talk also changes the way speech sounds are heard, according to a new study published in Proceedings of the National Academy of Sciences by scientists at Haskins Laboratories, a Yale-affiliated research laboratory. The findings could have a major impact on improving speech disorders.

"We've found that learning is a two-way street; motor function affects sensory processing and vice-versa," said David J. Ostry, a senior scientist at Haskins Laboratories and professor of psychology at McGill University. "Our results suggest that learning to talk makes it easier to understand the speech of others."

As a child learns to talk, or an adult learns a new language, Ostry explained, a growing mastery of oral fluency is matched by an increase in the ability to distinguish different speech sounds. While these abilities may develop in isolation, it is possible that learning to talk also changes the way we hear speech sounds.

Ostry and co-author Sazzad M. Nasir tested the notion that speech motor learning alters auditory perceptual processing by evaluating how speakers hear speech sounds following motor learning. They simulated speech learning by using a robotic device, which introduced a subtle change in the movement path of the jaw during speech.

To assess speech perception, the participants listened to words one at a time that were taken from a computer-produced continuum between the words "had" and "head." In the speech learning phase of the study, the robot caused the jaw to move in a slightly unusual fashion. The learning is measured by assessing the extent to which participants correct for the unusual movement.

"Its like being handed a two-pound weight for the first time and being asked to make a movement, it's uncomfortable at first, but after a while, the movement becomes natural," said Ostry. "In growing children, the nervous system has to adjust to moving vocal tract structures that are changing in size and weight in order to produce the same words. Participants in our study are learning to return the movement to normal in spite of these changes. Eventually our work could have an impact on deviations to speech caused by disorders such as stroke and Parkinson's disease."

"Our study showed that speech motor learning altered the perception of these speech sounds. After motor learning, the participants heard the words differently than those in the control group," said Ostry. "One of the striking findings is that the more motor learning we observed, the more their speech perceptual function changed."

Ostry said that future research will focus on the notion that sensory remediation may be a way to jumpstart the motor system.

The team previously found that the movement of facial muscles around the mouth plays an important role not only in the way the sounds of speech are made, but also in the way they are heard.


'/>"/>

Contact: Karen N. Peart
karen.peart@yale.edu
203-432-1326
Yale University
Source:Eurekalert  

Related medicine news :

1. Researchers identify the 3 killer indicators that are even worse than high cholesterol
2. Researchers discover links between city walkability and air pollution exposure
3. High-definition colonoscopy detects more polyps, Mayo Clinic researchers say
4. Researchers find room design can enhance patient care
5. UC San Diego researchers reverse pulmonary arterial hypertension in mouse models
6. No elder left behind: Researchers say designers can help close tech gap
7. Manipulating brain inflammation may help clear brain of amyloid plaques, Mayo Clinic researchers say
8. Researchers exploit genetic co-dependence to kill treatment-resistant tumor cells
9. Yerkes researchers present at 39th Annual Society for Neuroscience Conference
10. Patent challenges reduce pharmaceutical innovation and productivity, researchers suggest
11. ResearchToolkit.org provides one-stop Web resource for health researchers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers unlock the 'sound of learning' by linking sensory and motor systems
(Date:6/24/2017)... ... June 24, 2017 , ... ... Located at 217 Portion Road in Lake Ronkonkoma, Dental365 offers patients high-quality and ... so that visits to the dentist fit into their patients’ busy lifestyles. Dental365 ...
(Date:6/23/2017)... ... June 23, 2017 , ... ... the launch of Care Management Alerts and Dashboards, an innovative new service enabling ... Island. , RIQI’s Care Management Alerts and Dashboards provide near real-time data about ...
(Date:6/23/2017)... ... 2017 , ... Yesterday, U.S. Senate Republicans revealed details of ... replace the Affordable Care Act (ACA). Like the bill narrowly passed by the ... public health insurance program for low-income children, pregnant women, parents of dependent children, ...
(Date:6/23/2017)... ... 2017 , ... Dr. Ran Y. Rubinstein , a ... offering three new minimally invasive procedures to patients who want a younger and ... Rubinstein is excited to bring microneedling, microneedling facials, and platelet rich plasma (PRP) ...
(Date:6/23/2017)... ... ... Goodcents Deli Fresh Subs today announced the opening of a new restaurant in ... Kan. 66604 (near 21st and Gage). It is owned and operated by long-time Goodcents ... the Topeka and Bonner Springs, Kan. area. , “Goodcents has such a loyal ...
Breaking Medicine News(10 mins):
(Date:6/8/2017)... Fla. , June 8, 2017  Less than ... that hit more than 200,000 companies, including hospital networks, ... being heralded as one of the largest online extortion ... in the healthcare market, it is imperative that providers ... protect their data from this — and many other ...
(Date:6/7/2017)... 2017  Diplomat Specialty Infusion Group, a brand of Diplomat Pharmacy, ... Iowa location. The ... features an ISO 7 cleanroom—the standard needed to compound intravenous (IV) ... level of pollutants. "Our new ... better serve our Iowa patients," said ...
(Date:6/1/2017)... BLUE BELL, Pa. , June 1, 2017 /PRNewswire/ ... Nutriceuticals (PRN) and Veterinarian Recommended Solutions (VRS), and KD ... direct investment in Nutriceutical Holdings by KD Pharma Group. ... Nutriceutical Holdings with the option to acquire the entire ... ideal partner in KD. They are committed to growing ...
Breaking Medicine Technology: