Navigation Links
Brain Yields Up Clues to Language
Date:10/15/2009

Scientists track neural activity as participants utter words

THURSDAY, Oct. 15 (HealthDay News) -- U.S. researchers say they've achieved a breakthrough in understanding how the human brain computes language.

"Two central mysteries of human brain function are addressed in this study: one, the way in which higher cognitive processes such as language are implemented in the brain and, two, the nature of what is perhaps the best-known region of the cerebral cortex, called Broca's area," study first author Ned T. Sahin, a postdoctoral fellow in the radiology department at the University of California, San Diego and the department of psychology at Harvard University, said in a news release.

For the study, the researchers used intra-cranial electrophysiology to monitor brain language-processing activity while volunteers repeated words or spoke them in different forms, such as past tense or plural.

"We showed that distinct linguistic processes are computed within small regions of Broca's area, separated in time and partially overlapping in space," Sahin said.

He and his colleagues detected patterns of neuronal activity between 200 and 450 milliseconds after a word was presented to a participant. The patterns were identical for nouns and verbs, and consistent between participants.

The findings, published in the Oct. 16 issue of the journal Science, challenge the widely held belief that Broca's area handles speech while another part of the cortex called Wernicke's area handles reading and hearing.

"Our task involved both reading and speaking, and we found that aspects of word identity, grammar and pronunciation are all computed within Broca's area. Crucially, information about the identity of a printed word arrives in Broca's area very quickly after it is seen, in parallel with its arrival in Wernicke's. It has been clear for some time that the expressive/receptive model is out of date, and now it is clearer that Broca's area has several roles, in both expressive and receptive language," Sahin said.

More information

The U.S. National Institute on Deafness and Other Communication Disorders has more about voice, speech and language.



-- Robert Preidt



SOURCE: University of California, San Diego Health Sciences, news release, Oct. 15, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Draining away brains toxic protein to stop Alzheimers
2. Vision restoration therapy shown to improve brain activity in brain injured patients
3. Clinical depression linked to abnormal emotional brain circuits
4. Brain imaging reveals breakdown of normal emotional processing
5. Brain cells work differently than previously thought
6. Vaccine Stops Alzheimers Brain Tangles
7. Research may unlock mystery of autisms origin in the brain
8. Scientists Spot Brains Free Will Center
9. Free will takes flight: how our brains respond to an approaching menace
10. Alcoholics With Cirrhosis Have More Brain Damage
11. Brain Lesions Predict MS Progression
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... PawPaws ... a new product that was developed to enhance the health of felines. The formula ... , The two main herbs in the PawPaws Cat Kidney Support Supplement ...
(Date:6/25/2016)... ... 2016 , ... Experts from the American Institutes for Research ... June 26-28, 2016, at the Hynes Convention Center in Boston. , AIR experts ... planning, healthcare costs and patient and family engagement. , AIR researchers will be ...
(Date:6/25/2016)... ... 25, 2016 , ... "With 30 hand-drawn hand gesture animations, FCPX users can ... CEO of Pixel Film Studios. , ProHand Cartoon’s package transforms over 1,300 hand-drawn ... X . Simply select a ProHand generator and drag it above media or text ...
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. Calvin ... injury. Recently, he has implemented orthobiologic procedures as a method for treating his ... of the first doctors to perform the treatment. Orthobiologics are substances that orthopaedic ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article published June ... with. The article goes on to state that individuals are now more comfortable seeking ... common operations such as calf and cheek reduction. The Los Angeles area medical group, ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... June 23, 2016 Roche (SIX: RO, ROG; ... for its Elecsys BRAHMS PCT (procalcitonin) assay as a ... septic shock. With this clearance, Roche is the first ... integrated solution for sepsis risk assessment and management. ... infection and PCT levels in blood can aid clinicians ...
(Date:6/23/2016)... MOUNTAIN VIEW, Calif. , June 23, 2016 ... 9:00 a.m. CST on Thursday, July 7, 2016 , , ... kayla.belcher@frost.com ) , , , , EXPERT PANELISTS:  ... Sciences, Nitin Naik; Senior Industry Analyst, Christi Bird; Senior Industry Analyst, ... The global pharmaceutical industry is witnessing ...
(Date:6/23/2016)... , June 23, 2016 The vast ... an outpatient dialysis facility.  Treatments are usually 3 times ... hours per visit, including travel time, equipment preparation and ... patient, but especially grueling for patients who are elderly ... a skilled nursing and rehabilitation centers for some duration ...
Breaking Medicine Technology: