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It's the way you tell em': Study discovers how the brain controls accents and impersonations

Date:
June 18, 2013
Source:
Royal Holloway, University of London
Summary:
A study has identified the brain regions and interactions involved in impersonations and accents.
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A study, led by Royal Holloway University researcher Carolyn McGettigan, has identified the brain regions and interactions involved in impersonations and accents.

Using an fMRI scanner, the team asked participants, all non-professional impressionists, to repeatedly recite the opening lines of a familiar nursery rhyme either with their normal voice, by impersonating individuals, or by impersonating regional and foreign accents of English.

They found that when a voice is deliberately changed, it brings the left anterior insula and inferior frontal gyrus (LIFG) of the brain into play. The researchers also discovered that when comparing impersonations against accents, areas in the posterior superior temporal/inferior parietal cortex and in the right middle/anterior superior temporal sulcus showed greater responses.

"The voice is a powerful channel for the expression of our identity -- it conveys information such as gender, age and place of birth, but crucially, it also expresses who we want to be," said lead author Carolyn McGettigan from the Department of Psychology at Royal Holloway.

"Consider the difference between talking to a friend on the phone, talking to a police officer who's cautioning you for parking violation, or speaking to a young infant. While the words we use might be different across these settings, another dramatic difference is the tone and style with which we deliver the words we say. We wanted to find out more about this process and how the brain controls it."

While past work has found that listening to voices activates regions of the temporal lobe of the brain, no research had explored the brain regions involved in controlling vocal identity before this study.

"Our aim is to find out more about how the brain controls this very flexible communicative tool, which could potentially lead to new treatments for those looking to recover their own vocal identity following brain injury or a stroke, " said Carolyn.


Story Source:

The above post is reprinted from materials provided by Royal Holloway, University of London. Note: Materials may be edited for content and length.


Journal Reference:

  1. Carolyn McGettigan, Frank Eisner, Zarinah K. Agnew, Tom Manly, Duncan Wisbey, Sophie K. Scott. T'ain't What You Say, It's the Way That You Say It—Left Insula and Inferior Frontal Cortex Work in Interaction with Superior Temporal Regions to Control the Performance of Vocal Impersonations. Journal of Cognitive Neuroscience, 2013; 1 DOI: 10.1162/jocn_a_00427

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Royal Holloway, University of London. "It's the way you tell em': Study discovers how the brain controls accents and impersonations." ScienceDaily. ScienceDaily, 18 June 2013. <www.sciencedaily.com/releases/2013/06/130618113854.htm>.
Royal Holloway, University of London. (2013, June 18). It's the way you tell em': Study discovers how the brain controls accents and impersonations. ScienceDaily. Retrieved September 3, 2015 from www.sciencedaily.com/releases/2013/06/130618113854.htm
Royal Holloway, University of London. "It's the way you tell em': Study discovers how the brain controls accents and impersonations." ScienceDaily. www.sciencedaily.com/releases/2013/06/130618113854.htm (accessed September 3, 2015).

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