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:12/22/2014)... Dec. 22, 2014  ( www.competitivehealth.com ) — Competitive ... medical bill review and advocacy service, has signed an ... WellCard Savings discount health services marketplace. 63% ... more than they expected to pay. As part of ... costs, WellCard Savings is pleased to offer medical bill ...
(Date:12/22/2014)... 22, 2014 Fertility Associates of Memphis ... Bank USA , a network of more than 20 ... partnership, patients have fast access to a national pool ... IVF . Fertility Associates of Memphis is the only ... treatment option. , Dr. William Kutteh , director ...
(Date:12/19/2014)... BioPlus Specialty Pharmacy (BioPlus), one ... of Nick Maroulis, Pharm.D. to the newly created position ... In this position, Dr. Maroulis will continue to manage ... of our multi-site pharmacies as the company expands. Dr. ... that time he has served in many different capacities ...
(Date:12/19/2014)... Dec. 19, 2014 Bina Technologies, Inc. (Bina, ... that they have been acquired by Roche (SIX: RO, ... privately held company that provides a big data platform ... (NGS) data for the academic and translational research markets. ... and will continue to focus on development of their ...
Breaking Biology Technology:WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3
... healthcare system may undermine any progress in patient care made ... a featured speaker at this week's Digital Healthcare Conference ... president and CEO of the University of Wisconsin Medical Foundation, ... healthcare delivery. As he outlined the remaining barriers to the ...
... Household planning will accomplish more in preparing ... avian flu than will any reliance on information technology, ... were told. , ,Panelists talked about being three years ... mitigate the effects of a flu pandemic, which would ...
... told a gathering of health professionals attending the eHealth ... the first state to have a fully integrated electronic ... overcome barriers. , ,Speaking before a group of healthcare ... the state's eHealth Initiative, Doyle said those barriers include ...
Cached Biology Technology:U.S. health system could undermine EHR progress 2U.S. health system could undermine EHR progress 3IT may take a back seat in fighting avian flu 2IT may take a back seat in fighting avian flu 3IT may take a back seat in fighting avian flu 4Doyle asks health professionals to overcome barriers 2Doyle asks health professionals to overcome barriers 3
(Date:12/15/2014)... --Research and Markets ( http://www.researchandmarkets.com/research/87pph8/global_facial ) ... Facial Recognition Market 2015-2019" report to their ... Facial recognition is a technology used ... measures the overall facial feature of a person ... distance between eyes. Facial recognition is used for ...
(Date:12/11/2014)... ST. PAUL, Minn. , Dec. 10, 2014 ... in wireless physiologic monitoring, has released a new ... changing needs of preclinical toxicology researchers. M series, ... to help toxicologists collect the best possible physiologic ... studies. Adding functional endpoints to toxicology ...
(Date:12/10/2014)... Dec. 9, 2014 CIE San Diego has ... provides the connective tissue that enhances care coordination among ... easily share client-level information; earned a second $1 million ... organizations serving seniors aging in community and; will be ... December 11 th 4-6p. CIE San ...
Breaking Biology News(10 mins):Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3New telemetry implants expected to change how large animal toxicology studies are conducted 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4
... the University of California, San Diego developed an explanation ... others in the brains of people with Alzheimer,s disease. ... on November 21, come from detailed models of ... at the UC San Diego Jacobs School of Engineering. ...
... Century of Change, literally took 100 years to write. The ... 1906-1909. It was repeated from 1956-1958 and a technical book ... of that first survey was approaching, ornithologists Mike Ward, Jeff ... opportunity to do it again and write a book, this ...
... to the seafloor provide a feast for deep-sea animals ... such "whale falls" were homes for unique animals that ... in Monterey Canyon, researchers from the Monterey Bay Aquarium ... at these sites were not unique to whale falls, ...
Cached Biology News:Metabolism models may explain why Alzheimer's disease kills some neuron types first 2Metabolism models may explain why Alzheimer's disease kills some neuron types first 3New book on 100 years of Illinois birds 2New book on 100 years of Illinois birds 3New book on 100 years of Illinois birds 4Fleshing out the life histories of dead whales 2Fleshing out the life histories of dead whales 3Fleshing out the life histories of dead whales 4
... Large (Klenow) Fragment, Exonuclease Minus, is a ... 5´→3´ and the 3´→5´ exonuclease activities present ... (1,2). It is used for random primer ... (5). Klenow Fragment, Exonuclease Minus, will leave ...
... 8-iso PGE2 is one of several isoprostanes ... is a potent renal vasoconstrictor in the rat. ... with IC50 values of 0.5 and 5 µM, ... the rat at a concentration of 4 mg/kg/min, ...
DNA Polymerase I Large (Klenow) Fragment is a DNA polymerase that lacks the 5'Cut Site3' exodeoxyribonuclease activity of intact DNA Polymerase I but it contains the 3'Cut Site5' exodeoxyribonuclease...
... offers both high-speed and high-volume versatility ... rotor options, making it ideal for a ... Versatility , High-speed (up to 15,000 ... high-volume (4 x 250mL) swinging bucket rotors ...
Biology Products: