Navigation Links
Ultrasound directed to the human brain can boost sensory performance
Date:1/12/2014

g the skin are truly two distinct points, rather than one; and the frequency discrimination task, a test that measures sensitivity to the frequency of a chain of air puffs.

What the scientists found was unexpected.

The subjects receiving ultrasound showed significant improvements in their ability to distinguish pins at closer distances and to discriminate small frequency differences between successive air puffs.

"Our observations surprised us," said Tyler. "Even though the brain waves associated with the tactile stimulation had weakened, people actually got better at detecting differences in sensations."

Why would suppression of brain responses to sensory stimulation heighten perception? Tyler speculates that the ultrasound affected an important neurological balance.

"It seems paradoxical, but we suspect that the particular ultrasound waveform we used in the study alters the balance of synaptic inhibition and excitation between neighboring neurons within the cerebral cortex," Tyler said. "We believe focused ultrasound changed the balance of ongoing excitation and inhibition processing sensory stimuli in the brain region targeted and that this shift prevented the spatial spread of excitation in response to stimuli resulting in a functional improvement in perception."

To understand how well they could pinpoint the effect, the research team moved the acoustic beam one centimeter in either direction of the original site of brain stimulation and the effect disappeared.

"That means we can use ultrasound to target an area of the brain as small as the size of an M&M," Tyler said. "This finding represents a new way of noninvasively modulating human brain activity with a better spatial resolution than anything currently available."

Based on the findings of the current study and an earlier one, the researchers concluded that ultrasound has a greater spatial resolution than two other leading noninvasive
'/>"/>

Contact: Paula Byron
pbyron@vt.edu
540-526-2027
Virginia Tech
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Trial to test using ultrasound to move kidney stones
2. Ultrasound, nanoparticles may help diabetics avoid the needle
3. Ultrasound patch heals venous ulcers in human trial
4. UF researcher shows hawkmoths use ultrasound to combat bats
5. Measuring ultrasound for better treatment of muscle injuries
6. Texas A&M research contributes to improved ultrasound imaging
7. Ultrasound reveals autism risk at birth
8. Springer will collaborate with the Italian Society for Ultrasound in Medicine and Biology
9. Neuroscientists prove ultrasound can be tweaked to stimulate different sensations
10. Preclinical studies use specialized ultrasound to detect presence of cancer
11. Acoustic tweezers capture tiny creatures with ultrasound
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Ultrasound directed to the human brain can boost sensory performance
(Date:4/23/2014)... using triclosan as an antimicrobial ingredient in soaps, toothpastes ... are reporting new evidence that appears to support these ... Chemical Research in Toxicology , found that triclosan, as ... growth of human breast cancer cells in lab dishes ... and colleagues note that hormonal imbalances seem to play ...
(Date:4/23/2014)... of the family of bacteria that causes whooping ... reveals surprising findings about the bacteria,s origin and ... strategies to control this respiratory disease, which kills ... of 343 strains of the Bordetella pertussis ... the last 100 years illustrates how vaccination has ...
(Date:4/23/2014)... HOUSTON, April 23, 2014 A biomedical engineer at ... highly innovative technology to make blood transfusions safer. His ... the National Institutes of Health (NIH). , Blood ... one of modern medicine,s absolute necessities. Without them, for ... mean transfusions are perfect, however. There,s strong evidence that ...
Breaking Biology News(10 mins):In lab tests, the antimicrobial ingredient triclosan spurs growth of breast cancer cells 2Impact of whooping cough vaccination revealed 2UH biomedical engineer works to make blood transfusions safer 2UH biomedical engineer works to make blood transfusions safer 3
... a single dose of chemotherapy alongside radiotherapy could improve ... long-term side-effects, a new study reports.,As many as 96% ... ten years from diagnosis (1), but more advanced forms ... can have serious long-term complications.,Researchers at The Institute of ...
... terrorists targeted the United States with an anthrax attack, health ... such as knowing the likelihood of an individual becoming infected, ... how long to give antibiotics to protect people from ... letters killed five people and infected 17 others in the ...
... and herbs, especially Mexican oregano, all contain apigenin and ... the lab by inhibiting an important enzyme, according to ... induced cell death in two aggressive human pancreatic cancer ... we pre-treated cancer cells with apigenin for 24 hours, ...
Cached Biology News:Chemotherapy before radiotherapy for testicular cancer could reduce long-term side-effects 2Answering crucial questions about anthrax exposure 2Answering crucial questions about anthrax exposure 3Answering crucial questions about anthrax exposure 4Celery, artichokes contain flavonoids that kill human pancreatic cancer cells 2
(Date:1/15/2014)... 2014  Bill Jacobs Automotive, a group of car dealerships headquartered ... the Heartland Blood Center and offering free oil change coupons ... place Saturday, Jan. 18 at the Bill Jacobs Cadillac and ... (Photo: http://photos.prnewswire.com/prnh/20140115/MN46637 )  The Bill Jacobs ...
(Date:1/15/2014)... 2014   Niagara Thermal Products is proud to ... Technologies LLC ("B3") as the critical thermal component supplier ... the Army Corps of Engineers.  B3 has developed the ... contaminants and destroys VOCs and other chemical pollutants, allergens ...
(Date:1/15/2014)... Village, Calif. (PRWEB) January 15, 2014 ... treatment and management through the genomic analysis of tumor ... offer Therapy Finder™, a web-based cancer decision support application ... reporting option with Cynvenio’s ClearID™ genomic test, Therapy Finder ...
(Date:1/15/2014)... ­ RedBrick Health , a fast-growing leader in ... that EmblemHealth , the New York ... providing the RedBrick Compass health assessment, combined with the ... its members. EmblemHealth is among the first health plans ...
Breaking Biology Technology:Join the Bill Jacobs Auto blood drive and receive a free oil change 2Niagara Thermal Products LLC Selected as Critical Supplier for Buffalo BioBlower Air Purification Systems 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 3
... elected mayor of Colorados largest city, businessman John Hickenlooper invited ... was to ceremoniously bury the hatchet of intra-regional rivalry and ... metropolitan area, or not at all. , ,Every suburban ... a near-unanimous effort to pass a $4.7-billion mass transit initiative ...
... data quality firm Firstlogic for about $69 million ... second quarter. , ,Firstlogic is a privately held firm that ... sure their data is as correct as they need to ... call centers, web sites, customer relationship management systems, and business ...
... settled with a Belgian company that sued last September ... virus genotyping technology from Innogenetics, for undisclosed financial terms. ... Aril 2004 Third Wave forged a deal under which ... line of products in Europe. It was Third Wave's ...
Cached Biology Technology:Economic collaboration in Denver sets tall goal for Wisconsin 2Economic collaboration in Denver sets tall goal for Wisconsin 3
RABBIT ANTI ISOCITRATE DEHYDROGENASE...
... two highly efficient methods of identifying recombinant ... By using the large-scale screen method in ... is to transfer partial colonies of E. ... into the solutions provided by the kits ...
Recombinant Rat Leptin, CF...
Rat whole blood (Sprague-Dawley, averaging 7-8 weeks of age, either sex) is collected at the time of slaughter and refrigerated within 6 hours, and processed and frozen within 24 hours. The serum is ...
Biology Products: