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A team of researchers, funded by the Research Council Biotechnology and Biological Sciences (BBSRC), United Kingdom, has found that the human brain can recognize in less than two tenths of a second the sound of human voice. The research could help scientists better understand diseases as autism.

The study, conducted at the University of Glasgow, has revealed that the brain recognizes the voices in a time period similar to that used in recognizing faces, approximately 170 milliseconds, starting from the exposure. Ian Charest led the study with the help of Pascal Belin. Because human social interactions rely heavily on oral and facial expressions, the brain has probably developed the ability to process them very quickly and efficiently. As the media faces and voices are usually associated, it makes sense for the brain to process in a similar time period. Researchers conducted an experiment in which 32 volunteers measured by electroencephalography (EEG) electrical signals generated by the brain as the volunteers heard a series of sounds including birdsong, ambient sounds and human voices.
I discovered in this study may also help better understand diseases such as autism, and to help develop more effective diagnostic tools.

Autistic individuals have difficulties in social interactions and is observed in these abnormal brain activity after being exposed to faces or voices.