Scientists have identified a tiny region of our brain that not only allow us to recognise voices, but also helps us differentiate voices.<\/p>\n
The research, from Max Planck Institute in Germany, revealed that the posterior superior temporal gyrus (STG) in our brain is responsible for voice recognition.<\/p>\n
It is part of a section of the right posterior temporal lobe — one of the four major lobes in a mammalian brain.<\/p>\n
The study showed that especially persons with lesions in certain areas of the right posterior temporal lobe experienced difficulties recognising voices.<\/p>\n
“Very valid statements about which brain areas are responsible for which functions are derived from investigations in patients with lesions. If a certain part of the brain is injured and therefore a certain function fails, both components can be related to each other,” said lead author Claudia Roswandowitz, scientist at the Max Planck Institute.<\/p>\n
For the study, published in the journal Brain, the team tested patients with brain injuries and their capability to learn and recognise voices, especially those who had suffered a stroke.<\/p>\n
Additionally, the scientists looked at brain scans of the participants-high resolution images of their brain structures and injuries.<\/p>\n
The researchers found that people who suffered a stroke were even more likely to not recognise a voice.<\/p>\n
Out of the people examined, 9 per cent had some sort of trouble distinguishing one voice from another.<\/p>\n
These findings were supported by a previous study, where a phenomenon commonly known as voice blindness — phonagnosia — or the inability to recognise voices, was investigated.<\/p>\n
The team also detected that changes in and to the right temporal lobe led to the corresponding deficits.<\/p>\n
In comparison to the other patients with lesions, the causes did not lie in the failed brain structures but rather in their different brain activity.<\/p>\n
“These findings improve our understanding of how the brain identifies voices and provide the basis in the search for effective therapies for those affected by phonagnosia,” Roswandowitz said.<\/p>\n","protected":false},"excerpt":{"rendered":"
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