How musical expertise shapes speech perception: Evidence from auditory classification images

Léo Varnet (1, 2) , Tianyun Wang (2) , Peter Chloe (2) , Fanny Meunier (1) , Michel Hoen (2)

1 L2C2 - Institut des Sciences cognitives Marc Jeannerod - Laboratoire sur le langage, le cerveau et la cognition
2 CRNL - Centre de recherche en neurosciences de Lyon - Lyon Neuroscience Research Center

It is now well established that extensive musical training percolates to higher levels of cognition, such as speech processing. However, the lack of a precise technique to investigate the specific listening strategy involved in speech comprehension has made it difficult to determine how musicians’ higher performance in non-speech tasks contributes to their enhanced speech comprehension. The recently developed Auditory Classification Image approach reveals the precise time-frequency regions used by participants when performing phonemic categorizations in noise. Here we used this technique on 19 non-musicians and 19 professional musicians. We found that both groups used very similar listening strategies, but the musicians relied more heavily on the two main acoustic cues, at the first formant onset and at the onsets of the second and third formants onsets. Additionally, they responded more consistently to stimuli. These observations provide a direct visualization of auditory plasticity resulting from extensive musical training and shed light on the level of functional transfer between auditory processing and speech perception

Mots clés: Speech; classification images; musical expertise; percetion; categorisation; syllable

Domaines: Linguistique

Léo Varnet, Tianyun Wang, Peter Chloe, Fanny Meunier, Michel Hoen. How musical expertise shapes speech perception: Evidence from auditory classification images. Scientific Reports, 2015, 5, pp.14489. ⟨10.1038/srep14489⟩. ⟨hal-01229543⟩