Recent findings suggest the involvement of the cerebellum in perceptual and cognitive tasks. Our study investigated whether cerebellar patients show musical priming based on implicit knowledge of tonal-harmonic music. Participants performed speeded phoneme identification on sung target chords, which were either related or less-related to prime contexts in terms of the tonal-harmonic system. As groups, both cerebellar patients and age-matched controls showed facilitated processing for related targets, as previously observed for healthy young adults. The outcome suggests that an intact cerebellum is not mandatory for accessing implicit knowledge stored in long-term memory and for its influence on perception. One patient showed facilitated processing for less-related targets (suggesting sensory priming). The findings suggest directions for future research on auditory perception in cerebellar patients to further our understanding of cerebellar functions.
Keywordsnonverbal auditory perception/music perception; implicit knowledge; music cognition; cerebellum; cognitive priming; neuropsychology Numerous neuropsychological and neuroimaging findings suggest that the function of the cerebellum is not restricted to movement and motor control, but extends to perceptual and cognitive capacities. A seminal fMRI paper by Gao et al. (1996) reported that the dentate nuclei of the cerebellum were more active during manual tasks that emphasized sensory discrimination, rather than during movement per se. Neuroimaging studies have shown increased activation of the cerebellum during auditory tasks (Petacchi et al., 2005), such as frequency, intensity and duration discrimination (Belin et al., 2002), the processing of complex nonspeech sounds over pure tones (Vouloumanos et al., 2001), as well as for auditory attention (Janata, Tillmann, & Bharucha, 2002) and the perception of musical structures (Parsons, 2001;Tillmann, Janata, & Bharucha, 2003). Work in auditory perception is just one piece of a larger emerging picture that suggests potential cerebellar contributions to higher cognitive functions involving memory and language (see Fiez, 1996;Justus & Ivry, 2001 for reviews). Although the cerebellum seems to be implicated in perceptual and cognitive functions, no Correspondence concerning this article should be addressed to: Barbara Tillmann, Université Claude Bernard -Lyon I, CNRS UMR 5020, Neurosciences et Systèmes Sensoriels, 50 Av. Tony Garnier, F-69366 Lyon Cedex 07, France, Tel : +33 (0) 4 37 28 74 93, Fax : +33 (0) 4 37 28 76 01, barbara.tillmann@olfac.univ-lyon1.fr. Publisher's Disclaimer: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers...