![Roughness perception in sounds: behavioral and ERP evidence [An article from: Biological Psychology]](https://www.ebooknetworking.net/books/B00/0RR/bigB000RR0MUE.jpg)
Roughness perception in sounds: behavioral and ERP evidence [An article from: Biological Psychology]
Description
This digital document is a journal article from Biological Psychology, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
The mismatch negativity (MMN) correlates of the perception of roughness, the unpleasant character of sounds caused by the perception of amplitude fluctuation in the range of 20-200Hz, were studied on the basis of a variation in the degree of modulation (=modulation index m), which is a main parameter influencing roughness. A psychophysical study showed that perceived roughness of tones increased with modulation index for m-values from 0 up to 1.2. For larger values of m, roughness perception remained stable. In a subsequent ERP-study, infrequent amplitude modulated (AM) tones with varying modulation index were presented in the context of a series of pure tones in an ignore condition. The amplitude of the mismatch negativity correlated highly with the roughness ratings (r=-0.93) and did not increase monotonously with increasing modulation index. We conclude that perceived roughness rather than its physical correlate in sounds is reflected by the MMN and that roughness is thus preattentively encoded.
Description:
The mismatch negativity (MMN) correlates of the perception of roughness, the unpleasant character of sounds caused by the perception of amplitude fluctuation in the range of 20-200Hz, were studied on the basis of a variation in the degree of modulation (=modulation index m), which is a main parameter influencing roughness. A psychophysical study showed that perceived roughness of tones increased with modulation index for m-values from 0 up to 1.2. For larger values of m, roughness perception remained stable. In a subsequent ERP-study, infrequent amplitude modulated (AM) tones with varying modulation index were presented in the context of a series of pure tones in an ignore condition. The amplitude of the mismatch negativity correlated highly with the roughness ratings (r=-0.93) and did not increase monotonously with increasing modulation index. We conclude that perceived roughness rather than its physical correlate in sounds is reflected by the MMN and that roughness is thus preattentively encoded.
