Navigation Links
Study Offers Insights Into Sensory Perceptions
Date:9/24/2007

Woman who suffered stroke starting experiencing sounds as bodily sensations

MONDAY, Sept. 24 (HealthDay News) -- By studying a woman who experienced sounds as bodily sensations after suffering a small stroke, researchers think they've gained new insight into how the brain processes sensory signals and fixes itself when injured.

The woman began having strange reactions to sound after suffering a stroke that only affected part of a brain structure known as the thalamus. Her experiences provide more evidence that the brain tries to repair itself by making new neural connections after injury, said study lead author Tony Ro, an associate professor of psychology at Rice University.

"It tells us that the brain can continue to reorganize and alter its function very late into life," Ro said.

The thalamus, located in the middle of the brain, acts as a kind of relay station for sensory processing, Ro said. "Almost all of the sensory receptors from the eyes, ears or skin go through into the thalamus before they project onto higher areas of the brain."

About eight years ago, the woman suffered a small stroke that affected only the ventrolateral nucleus, a part of the thalamus that is smaller than a pea, Ro said. She's now about 40 years old and works as a college professor.

The stroke cut off blood circulation "and left a little tiny hole in her brain which was no longer functioning," he said. "About a year to two years after her stroke, she began feeling a lot of odd sensations in the left half of her body when different types of sounds were played."

The study authors then gave a variety of neurological tests to the woman. Some sounds would cause sensations in her left hand, the left side of her face or her left forearm, a phenomenon known as synesthesia, Ro said. Other sounds did nothing.

It appeared that the brain's neurons were reconnecting after the stroke and causing "changes in behavior, sensory processes and perception," Ro said. "Areas of the brain that were primarily involved with feeling on the left half of her body that are no longer receiving input due to brain damage can now respond to different sounds."

The study was expected to be published in an upcoming issue of the journal Annals of Neurology.

Dr. Richard E. Cytowic, a Washington, D.C., neurologist who studies synesthesia, said the study is useful, because the brain scans done by the researchers allowed mapping of cellular connections between the dead area of the woman's brain and other areas of the brain.

And, even though it's just one case, the study "forces rethinking of how the thalamus and brain are organized," Cytowic said. "The areas so often talked about and pointed to on brain diagrams are not so distinct and isolated as conventional illustrations claim."

More information

Learn more about synesthesia from Massachusetts Institute of Technololgy.



SOURCES: Tony Ro, Ph.D., associate professor of psychology, Rice University, Houston; Richard E. Cytowic, M.D., neurologist, Washington D.C.; Annals of Neurology


'/>"/>
Copyright©2007 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Rural Canadians travel far for specialists: study
2. A new study surpasses Gene Therapy Hurdle
3. Tomato Sauce reduces Cancer Risk- Study
4. A question on study of Adult Stem Cell
5. Study on obesity and heart failure
6. National Lung Study in the process
7. Marijuana gateway theory strengthened by study of twins
8. Old theory of adaptation confirmed by new study
9. Study casts doubt on keyboard ills
10. Gene study links endometriosis, infertility
11. Study reveals how stress can make you sick
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/24/2016)... ... June 24, 2016 , ... People across the U.S. are sharpening ... Talker Award, an essay contest in which patients and their families pay tribute to ... at the 2016 National Society of Genetic Counselors (NSGC) Annual Education Conference (AEC) this ...
(Date:6/24/2016)... NY (PRWEB) , ... June 24, 2016 , ... ... Haute Living, is proud to recognize Dr. Barry M. Weintraub as a prominent ... “the most beautiful women in the world, and the most handsome men, look ...
(Date:6/24/2016)... , ... June 24, 2016 , ... ... actively feeding the Frederick area economy by obtaining investment capital for emerging technology ... past 2½ years that have already resulted in more than a million dollars ...
(Date:6/24/2016)... ... June 24, 2016 , ... Venture Construction Group (VCG) ... held on June 20th at the Woodmont Country Club at 1201 Rockville Pike, Rockville, ... dedicated to helping service members that have been wounded in battle and their families. ...
(Date:6/24/2016)... ... June 24, 2016 , ... ... the upcoming 2016 Miss Arizona pageant as its official Medspa Sponsor. Dr. Josh ... Mesa, and Chandler, Arizona. , Dr. Olson says the decision to support ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016  Arkis BioSciences, a ... invasive and more durable cerebrospinal fluid treatments, today ... The Series-A funding is led by Innova Memphis, ... and other private investors.  Arkis, new financing will ... and the market release of its in-licensed Endexo® ...
(Date:6/23/2016)... ITASCA, Ill. , June 23, 2016  In a startling ... states are failing their residents by lacking a comprehensive, proven plan ... , a definitive ranking of how states are tackling the ... rating to only four states – Kentucky , ... and Vermont . Of the 28 failing states, ...
(Date:6/23/2016)... Bracket , a leading clinical trial technology and specialty ... Bracket eCOA (SM) 6.0, at the 52 nd ... in Philadelphia , Pennsylvania.  A demonstration of ... its kind to fully integrate with RTSM, will be held ... a flexible platform for electronic clinical outcomes assessments that is ...
Breaking Medicine Technology: