Fiche publication
Date publication
juillet 2016
Journal
Neurobiology of learning and memory
Auteurs
Membres identifiés du Cancéropôle Est :
Dr PAZART Lionel
,
Pr HAFFEN Emmanuel
,
Pr MOULIN Thierry
Tous les auteurs :
Gabriel D, Wong TC, Nicolier M, Giustiniani J, Mignot C, Noiret N, Monnin J, Magnin E, Pazart L, Moulin T, Haffen E, Vandel P
Lien Pubmed
Résumé
The vast majority of people experience musical imagery, the sensation of reliving a song in absence of any external stimulation. Internal perception of a song can be deliberate and effortful, but also may occur involuntarily and spontaneously. Moreover, musical imagery is also involuntarily used for automatically completing missing parts of music or lyrics from a familiar song. The aim of our study was to explore the onset of musical imagery dynamics that leads to the automatic completion of missing lyrics. High-density electroencephalography was used to record the cerebral activity of twenty healthy volunteers while they were passively listening to unfamiliar songs, very familiar songs, and songs previously listened to for two weeks. Silent gaps inserted into these songs elicited a series of neural activations encompassing perceptual, attentional and cognitive mechanisms (range 100-500ms). Familiarity and learning effects emerged as early as 100ms and lasted 400ms after silence occurred. Although participants reported more easily mentally imagining lyrics in familiar rather than passively learnt songs, the onset of neural mechanisms and the power spectrum underlying musical imagery were similar for both types of songs. This study offers new insights into the musical imagery dynamics evoked by gaps of silence and on the role of familiarity and learning processes in the generation of these dynamics. The automatic and effortless method presented here is a potentially useful tool to understand failure in the familiarity and learning processes of pathological populations.
Référence
Neurobiol Learn Mem. 2016 Jul;132:18-28
