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February 23, 2018 06:40 pm

The 'Loudness' of Our Thoughts Affects How We Judge External Sounds

The "loudness" of our thoughts -- or how we imagine saying something -- influences how we judge the loudness of real, external sounds, a team of researchers from NYU Shanghai and NYU has found. From a report: Its study, titled "Imagined Speech Influences Perceived Loudness of Sound" and published in the journal Nature Human Behaviour, offers new insights into the nature of brain activity. The research project was conducted by Tian Xing and Bai Fan from NYU Shanghai with, David Poeppel and Teng Xiangbin from NYU, and Ding Nai from Zhejiang University. "Our 'thoughts' are silent to others -- but not to ourselves, in our own heads -- so the loudness in our thoughts influences the loudness of what we hear," says Poeppel, a professor of psychology and neural science. Using an imagery-perception repetition paradigm, the team found that auditory imagery will decrease the sensitivity of actual loudness perception, with support from both behavioural loudness ratings and human electrophysiological (EEG and MEG) results.

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