Change in left inferior frontal connectivity with less unexpected harmonic cadence by musical expertise

Autoři: Chan Hee Kim aff001;  June Sic Kim aff002;  Yunhee Choi aff004;  Jeong-Sug Kyong aff005;  Youn Kim aff007;  Suk Won Yi aff008;  Chun Kee Chung aff001
Působiště autorů: Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Science, Seoul, Korea aff001;  Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Korea aff002;  Research Institute of Basic Sciences, Seoul National University, Seoul, Korea aff003;  Medical Research Collaborating Center, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aff004;  Neuroscience Research Institute, Seoul National University Medical Research Center, Seoul, Korea aff005;  Audiology Institute, Hallym University of Graduate Studies, Seoul, Korea aff006;  Department of Music, School of Humanities, The University of Hong Kong, Hong Kong, China aff007;  College of Music, Seoul National University, Seoul, Korea aff008;  Western Music Research Institute, Seoul National University, Seoul, Korea aff009;  Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea aff010
Vyšlo v časopise: PLoS ONE 14(11)
Kategorie: Research Article
doi: 10.1371/journal.pone.0223283


In terms of harmonic expectancy, compared to an expected dominant-to-tonic and an unexpected dominant-to-supertonic, a dominant-to-submediant is a less unexpected cadence, the perception of which may depend on the subject’s musical expertise. The present study investigated how aforementioned 3 different cadences are processed in the networks of bilateral inferior frontal gyri (IFGs) and superior temporal gyri (STGs) with magnetoencephalography. We compared the correct rate and brain connectivity in 9 music-majors (mean age, 23.5 ± 3.4 years; musical training period, 18.7 ± 4.0 years) and 10 non-music-majors (mean age, 25.2 ± 2.6 years; musical training period, 4.2 ± 1.5 years). For the brain connectivity, we computed the summation of partial directed coherence (PDC) values for inflows/outflows to/from each area (sPDCi/sPDCo) in bilateral IFGs and STGs. In the behavioral responses, music-majors were better than non-music-majors for all 3 cadences (p < 0.05). However, sPDCi/sPDCo was prominent only for the dominant-to-submediant in the left IFG. The sPDCi was more strongly enhanced in music-majors than in non-music-majors (p = 0.002, Bonferroni corrected), while the sPDCo was vice versa (p = 0.005, Bonferroni corrected). Our data show that music-majors, with higher musical expertise, are better in identifying a less unexpected cadence than non-music-majors, with connectivity changes centered on the left IFG.

Klíčová slova:

Acoustic signals – Analysis of variance – Bioacoustics – Left hemisphere – Music cognition – Music perception – Syntax – Magnetoencephalography


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2019 Číslo 11