Navigation Links
Scientists decode brain waves to eavesdrop on what we hear
Date:1/31/2012

of people undergoing brain surgery to determine the location of intractable seizures so that the area can be removed in a second surgery. Neurosurgeons typically cut a hole in the skull and safely place electrodes on the brain surface or cortex in this case, up to 256 electrodes covering the temporal lobe to record activity over a period of a week to pinpoint the seizures. For this study, 15 neurosurgical patients volunteered to participate.

Pasley visited each person in the hospital to record the brain activity detected by the electrodes as they heard 5-10 minutes of conversation. Pasley used this data to reconstruct and play back the sounds the patients heard. He was able to do this because there is evidence that the brain breaks down sound into its component acoustic frequencies for example, between a low of about 1 Hertz (cycles per second) to a high of about 8,000 Hertz that are important for speech sounds.

Pasley tested two different computational models to match spoken sounds to the pattern of activity in the electrodes. The patients then heard a single word, and Pasley used the models to predict the word based on electrode recordings.

"We are looking at which cortical sites are increasing activity at particular acoustic frequencies, and from that, we map back to the sound," Pasley said. He compared the technique to a pianist who knows the sounds of the keys so well that she can look at the keys another pianist is playing in a sound-proof room and "hear" the music, much as Ludwig van Beethoven was able to "hear" his compositions despite being deaf.

The better of the two methods was able to reproduce a sound close enough to the original word for Pasley and his fellow researchers to correctly guess the word.

"We think we would be more accurate with an hour of listening and recording and then repeating the word many times," Pasley said. But because any realistic device would need to accurately identify words heard
'/>"/>

Contact: Robert Sanders
rsanders@berkeley.edu
510-643-6998
University of California - Berkeley
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Chinese Scientists Zhen-Yi Wang and Zhu Chen Awarded 7th Annual Szent-Gyorgyi Prize for Progress in Cancer Research
2. iBioSeminars and iBioMagazine: Free, Online Biology Seminars and Short Talks by Leading Scientists
3. Scientists solve mystery of colorful armchair nanotubes
4. Nanowiggles: Scientists discover graphene nanomaterials with tunable functionality in electronics
5. Sheffield scientists shine a light on the detection of bacterial infection
6. Singapore scientists lead human embryonic stem cell study
7. Scientists defuse the Vietnam time bomb
8. Scientists carve nanowires out of ultrananocrystalline diamond thin films
9. Berkeley Lab scientists develop new tool for the study of spatial patterns in living cells
10. Shaken, not stirred: Berkeley lab scientists spy molecular maneuvers
11. Using new technique, scientists uncover a delicate magnetic balance for superconductivity
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/1/2014)... 01, 2014 METTLER TOLEDO’s newly improved ... precision balances as well as a dual range ... performance, the new SmartPan™ weighing pan delivers results up ... On all balances, ergonomic design details mean users no ... working for long periods in front of the balance. ...
(Date:10/1/2014)... 2014 Pfanstiehl has announced the launch ... in the USA under ... recognized for playing a key role in protein ... evidence that media supplementation with mannose can improve ... according to Dr. Christopher Wilcox , VP, ...
(Date:10/1/2014)... (PRWEB) September 30, 2014 New applications ... arrangements that have evolved in nature over millennia are ... bioinspired materials for applications in biophotonics in the ... . The journal is published by SPIE, the international ... Library. Several of the peer-reviewed articles are accessible via ...
(Date:10/1/2014)... -- This report analyzes the worldwide markets ... the following Product Segments: Proteases, Polymerases, Carbohydrases, ... also analyzed are Pharmaceuticals & Diagnostics, Research/Biotechnology, ... separate comprehensive analytics for the US, Canada, ... America. Annual estimates and forecasts are provided ...
Breaking Biology Technology:METTLER TOLEDO’s XS Balance Line Delivers Performance and Ergonomics To Safeguard Health in the Workplace 2METTLER TOLEDO’s XS Balance Line Delivers Performance and Ergonomics To Safeguard Health in the Workplace 3Pfanstiehl Launches cGMP-produced Mannose for Cell Culture Media Optimization & Glycoprotein Biosynthesis 2Biomimetic and bioinspired materials enable new healthcare options, reports Journal of Biomedical Optics 2Biomimetic and bioinspired materials enable new healthcare options, reports Journal of Biomedical Optics 3Global Specialty Enzymes Industry 2Global Specialty Enzymes Industry 3Global Specialty Enzymes Industry 4Global Specialty Enzymes Industry 5Global Specialty Enzymes Industry 6Global Specialty Enzymes Industry 7Global Specialty Enzymes Industry 8Global Specialty Enzymes Industry 9Global Specialty Enzymes Industry 10Global Specialty Enzymes Industry 11Global Specialty Enzymes Industry 12Global Specialty Enzymes Industry 13Global Specialty Enzymes Industry 14Global Specialty Enzymes Industry 15Global Specialty Enzymes Industry 16Global Specialty Enzymes Industry 17Global Specialty Enzymes Industry 18Global Specialty Enzymes Industry 19Global Specialty Enzymes Industry 20Global Specialty Enzymes Industry 21Global Specialty Enzymes Industry 22Global Specialty Enzymes Industry 23Global Specialty Enzymes Industry 24Global Specialty Enzymes Industry 25Global Specialty Enzymes Industry 26
... Calif., Dec. 10 Nuvelo, Inc.,(Nasdaq: ... from the Phase 1 trial of,recombinant, secreted ... its Wnt,Therapeutics Program. This single-center, double-blind, placebo-controlled,single-ascending ... and,pharmacokinetics of a single intravenous (IV) administration ...
... Society of Hematology Annual Meeting , , ... ACEL ) today announced that American Society of ... 112: Abstract 4205 & 2008 112: Abstract 4010) report that ... lymphocytic leukemia (CLL) and acute myeloblastic leukemia (AML) cells alone ...
... Dec. 10 VIASPACE Inc. (OTC Bulletin Board: VSPC) ... proprietary fast-growing China Giant King Grass near the IPA factory in ... hybrid perennial grass which is propagated from seedlings rather than seeds. ... can yield four crops per year and up to 156 tons ...
Cached Biology Technology:Nuvelo Announces Positive Results from Phase 1 Clinical Trial of NU206 in Healthy Volunteers 2Nuvelo Announces Positive Results from Phase 1 Clinical Trial of NU206 in Healthy Volunteers 3Nuvelo Announces Positive Results from Phase 1 Clinical Trial of NU206 in Healthy Volunteers 4Nuvelo Announces Positive Results from Phase 1 Clinical Trial of NU206 in Healthy Volunteers 5Alfacell's ONCONASE(R) and R-Amphinase Show Anti-Tumor Activity in Chronic Lymphocytic Leukemia and Acute Myeloblastic Leukemia Cells 2Alfacell's ONCONASE(R) and R-Amphinase Show Anti-Tumor Activity in Chronic Lymphocytic Leukemia and Acute Myeloblastic Leukemia Cells 3Alfacell's ONCONASE(R) and R-Amphinase Show Anti-Tumor Activity in Chronic Lymphocytic Leukemia and Acute Myeloblastic Leukemia Cells 4Alfacell's ONCONASE(R) and R-Amphinase Show Anti-Tumor Activity in Chronic Lymphocytic Leukemia and Acute Myeloblastic Leukemia Cells 5VIASPACE Plants Biofuel & Animal Feed Grass and Signs Land Lease in China 2VIASPACE Plants Biofuel & Animal Feed Grass and Signs Land Lease in China 3
(Date:9/30/2014)... using marijuana, new research, involving mice and published in ... of Leukocyte Biology , suggests that just because ... That,s because a team of Italian scientists have found ... damage to the immune system. This damage may result ... multiple sclerosis, inflammatory bowel disease and rheumatoid arthritis in ...
(Date:9/30/2014)... Sept. 30, 2014  Spectra Automation, a ... the biotech and power generation industries, announced ... Bioprocess Manager, an easy-to-use and cost-effective data ... bioprocess development laboratories. Most ... and analyzer systems. Accessing and consolidating data ...
(Date:9/29/2014)... A new study confirms that the exposure to tar ... than of regular cigarettes. Similarly, exposure to nicotine ... increasingly popular type of cigarette in several countries around ... of certain toxic chemicals in the smoke of these ... because lower levels of chemicals in the smoke are ...
Breaking Biology News(10 mins):Adolescent exposure to thc may cause immune systems to go up in smoke 2Spectra Automation Introduces RECONN Bioprocess Manager 2Slim cigarette smokers not exposed to more harmful chemicals 2
... to avoid smiling in public in order to hide their ... costly treatment options, such as veneers, crowns and bonding, served ... such stains and boost their self-esteem. , However, Kim ... how a new tooth whitening procedure he used on a ...
... women, accumulated sun exposure has already permanently damaged their ... up as unsightly dark splotches and uneven skin tone ... a compound best known for treating arthritis ?can actually ... help fade existing ones. , "These findings on glucosamine ...
... In a paper being presented in two American ... joint Estonian-French team demonstrated "for the first time ... suggesting that mitochondria may mechanically regulate nuclear function." ... over 10 years, reported that it recently "found ...
Cached Biology News:Tetracycline plus teeth equal gray smile 2Tetracycline plus teeth equal gray smile 3Science finds new fix for UV-damaged skin in arthritis treatment 2Science finds new fix for UV-damaged skin in arthritis treatment 3First direct mechanical communication of mitochondria, cardiomyocyte nucleus shown 2First direct mechanical communication of mitochondria, cardiomyocyte nucleus shown 3
The essence of fluorescence analysis is sensitivity. The high throughput optical system in the RF-5301PC employs a blazed holographic grating, photomultiplier and digital signal processing to provide...
... In Situ Assay Kit is a fluorescent-based ... cells undergoing apoptosis. The kit is for ... diagnostic or therapeutic procedures. CHEMICON®s CaspaTag™ Pan-Caspase ... approach to detect active caspases. The methodology ...
... jetSI-ENDO-FluoF is a ... nm; emission at 520 nm), ... These reagents are used to ... investigate the intracellular delivery and ...
... of long double stranded RNA (dsRNA) has ... a diverse group of organisms as well ... leads to the inhibition of protein expression ... target messenger RNA (mRNA). Attempts to induce ...
Biology Products: