Neuroimaging Of Brain Shows Who Spoke To A Person And What Was Said
2008-11-13 0:00

sciencedaily.com


Scientists from Maastricht University have developed a method to look into the brain of a person and read out who has spoken to him or her and what was said. With the help of neuroimaging and data mining techniques the researchers mapped the brain activity associated with the recognition of speech sounds and voices.

In their Science article "'Who' is Saying 'What'? Brain-Based Decoding of Human Voice and Speech," the four authors demonstrate that speech sounds and voices can be identified by means of a unique 'neural fingerprint' in the listener's brain. In the future this new knowledge could be used to improve computer systems for automatic speech and speaker recognition.

Seven study subjects listened to three different speech sounds (the vowels /a/, /i/ and /u/), spoken by three different people, while their brain activity was mapped using neuroimaging techniques (fMRI). With the help of data mining methods the researchers developed an algorithm to translate this brain activity into unique patterns that determine the identity of a speech sound or a voice. The various acoustic characteristics of vocal cord vibrations (neural patterns) were found to determine the brain activity.

Just like real fingerprints, these neural patterns are both unique and specific: the neural fingerprint of a speech sound does not change if uttered by somebody else and a speaker's fingerprint remains the same, even if this person says something different.

Moreover, this study revealed that part of the complex sound-decoding process takes place in areas of the brain previously just associated with the early stages of sound processing. Existing neurocognitive models assume that processing sounds actively involves different regions of the brain according to a certain hierarchy: after a simple processing in the auditory cortex the more complex analysis (speech sounds into words) takes place in specialised regions of the brain. However, the findings from this study imply a less hierarchal processing of speech that is spread out more across the brain.

The research was partly funded by the Netherlands Organisation for Scientific Research (NWO): Two of the four authors, Elia Formisano and Milene Bonte carried out their research with an NWO grant (Vidi and Veni). The data mining methods were developed during the PhD research of Federico De Martino (doctoral thesis defended at Maastricht University on 24 October 2008).

Article from: http://www.sciencedaily.com/releases/2008/11/081110071240.htm



Related Articles
Brain Machine Interfaces
Connect your Brain to the Internet?
Reading This Will Change Your Brain
How Does The Brain Make Conscious Decisions?
'Brainbox' Computer Mimics Human Brain
Next-generation toys read brain waves
We are moving ever closer to the era of mind control
The Mind Has No Firewall


Latest News from our Front Page

Aurora Shooting Victim Parents Face $200K Court Fees, Bankruptcy, After Failing to Sue Ammo Dealers
2015-08-01 2:17
The 2012 Colorado Theater Shooting still doesn’t add up… Media character and ‘Shooter’ James Holmes in court in 2012-2013. In 2014, Sandy and Lonnie Phillips, the mother and stepfather of Aurora Theater Shooting victim Jessica Redfield Ghawi, tried to sue the ammo companies they believe supplied shooter James Holmes with his ammunition, body armor and other items. They bleived that the online retailer BulkAmmo.com had sold Holmes ...
FBI's Joint Terrorism Task Force Investigating Confederate Flags at MLK's Ebenezer Baptist Church
2015-08-01 2:21
According to the Atlanta Police Department, two White men left four small Confederate Battle Flags outside MLK’s Ebenezer Baptist Church in Atlanta … and get this, the FBI’s Joint Terrorism Task Force is on the scene investigating the incident. Atlanta police Chief George Turner said his agency was working with federal authorities and they have not determined what charges might be ...
Democratic National Committee Chair Wasserman Schultz Can’t Explain Difference Between Democrat Party and Socialism
2015-08-01 2:08
Things got very awkward today when Chris Matthews asked DNC Chair Debbie Wasserman Schultz what the difference was between the modern Democratic Party and Socialism. We haven’t seen that dazed look since Rachel Dolezal was busted as a fraud. Wasserman Schultz was speechless. Completely stumped. Couldn’t answer. Then changed the subject. Because we all know there is no difference between today’s Democrat Party and the radical ...
Catching on slow: Yet Another Study Show Cellphone Radiation Cause Cancer
2015-08-01 1:44
The scientists were right — your cell phone can give you cancer. There have long been whispers of a cancer connection from your cell — and a new study backs up the claims. "These data are a clear sign of the real risks this kind of radiation poses for human health," study author Igor Yakymenko said. Yakymenko’s meta-study — basically a study of ...
Trump Goes #Cuckservative on Immigration
2015-08-01 1:28
For weeks, the media have trumpeted the supposed death of the Trump campaign. First, they claimed, Trump’s campaign imploded on launch thanks to his comments about illegal immigration. Then they claimed that Trump was finished because of his slap at Senator’s (R-AZ) war service. But neither of those comments alienated Trump’s base – he’s maintained his seven point lead over ...
More News »