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

Kim, Chan Hee; Kim, June Sic; Choi, Yunhee; Kyong, Jeong Sug; Kim, Youn; Yi, Suk Won; Chung, Chun Kee

doi:10.1371/journal.pone.0223283

“…Even though the bilateral IFGs are associated with musical syntactic processing, the left IFG is especially crucial (Sammler et al, 2011). In our previous study (Kim et al, 2019), the brain networks centered in the left IFG was related with the processing of particular information which only the musically trained people could identify. In this regards, the fronto-temporal connectivity was increased in the VMM compared to the VOM with the "Twinkle Twinkle Little Star".…”

Section: Discussionmentioning

confidence: 88%

Increased fronto-temporal connectivity by modified melody in real music

Kim

¹

,

Seol

²

,

Jin

³

et al. 2020

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In real music, the original melody may appear intact, with little elaboration only, or significantly modified. Since a melody is most easily perceived in music, hearing significantly modified melody may change a brain connectivity. Mozart KV 265 is comprised of an original melody of "Twinkle Twinkle Little Star" with its significant variations. We studied whether effective connectivity changes with significantly modified melody, between bilateral inferior frontal gyri (IFGs) and Heschl's gyri (HGs) using magnetoencephalography (MEG). Among the 12 connectivities, the connectivity from the left IFG to the right HG was consistently increased with significantly modified melody compared to the original melody in 2 separate sets of the same rhythmic pattern with different melody (p = 0.005 and 0.034, Bonferroni corrected). Our findings show that the modification of an original melody in a real music changes the brain connectivity. Significant statementsOur data show how a regional connectivity changes when the original melody is intact or significantly modified, consistent in two different sets of variations with the same rhythmic patterns but with the different melody pattern. The present study employed real music of Mozart's Variation KV 265 as musical stimuli, dissected musical elements in each variation, and devised the two comparable sets of variation, which have the same rhythmic pattern but different melody. We exploited naturalistic conditions in real music instead of devising artificial conditions, and successfully demonstrated how variations of melody in real music change a regional connectivity in the brain.

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“…Accordingly, the directional information flow in frontotemporal connectivity could explain how the left IFG and the right HG collaborate in processing target phrases. The IFG and HG are pivotal areas for music perception, and their connectivity is discussed in relation to syntax processes [24][25][26] , categorization 27 , and the working memory of melody process 28 . Thus, frontotemporal connectivity between the IFG and HG is likely modulated by both a top-down process based on knowledge of the TTLS melody and a bottom-up process based on new information on voices accumulated while sequentially listening to target and cue phrases in each variation 29,30 .…”

Section: Discussionmentioning

confidence: 99%

Bidirectional connectivity changes in the frontotemporal areas reflect figure–ground reversal in multivoiced music

Kim,

Seo,

Chung

2024

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The neural processes underlying the perception of prominently heard voices (figure) and less prominently heard voices (ground), particularly when this prominence is naturally reversed while listening to music, remain inadequately investigated. We investigated changes in frontotemporal connectivity in response to figure-ground reversal within multivoiced music using Mozart's variation KV 265, including the "Twinkle, Twinkle, Little Star (TTLS)" melody based on our previous study of frontotemporal connectivity (TTLS connectivity), influenced by the emergence of the TTLS melody in the upper voice at the beginning of each variation, and independent of lower voices. We examined the consistency of the TTLS connectivity pattern across repetitions of the same phrases within each variation. Notably, TTLS connectivity changed only for the final repetition between variations sharing the same TTLS melody. This result indicates a perceptual reversal, processing the TTLS melody initially perceived as figure into the ground. Our data effectively illustrate how the brain dissects voices within the multidimensional structures of continuously changing music, reconstructing them through a momentary switch in figure-ground processes. These findings provide valuable insights into the neural processes associated with the dynamic experience of listening to music, a ubiquitous aspect of human life.

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“…The human brain has several interconnected key regions processing music, including bilateral inferior frontal gyri (IFGs) and Heschl's gyri (HGs) [1][2][3][4][5][6][7][8]. Each region and hemispheres are known to have a specific function.…”

Section: Plos Onementioning

confidence: 99%

Increased fronto-temporal connectivity by modified melody in real music

Kim

¹

,

Seol

²

,

Jin

³

et al. 2020

Self Cite

View full text Add to dashboard Cite

In real music, the original melody may appear intact, with little elaboration only, or significantly modified. Since a melody is most easily perceived in music, hearing significantly modified melody may change a brain connectivity. Mozart KV 265 is comprised of a theme with an original melody of "Twinkle Twinkle Little Star" and its significant variations. We studied whether effective connectivity changes with significantly modified melody, between bilateral inferior frontal gyri (IFGs) and Heschl's gyri (HGs) using magnetoencephalography (MEG). Among the 12 connectivities, the connectivity from the left IFG to the right HG was consistently increased with significantly modified melody compared to the original melody in 2 separate sets of the same rhythmic pattern with different melody (p = 0.005 and 0.034, Bonferroni corrected). Our findings show that the modification of an original melody in a real music changes the brain connectivity.

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

Cited by 5 publications

References 27 publications

Increased fronto-temporal connectivity by modified melody in real music

Increased fronto-temporal connectivity by modified melody in real music

Bidirectional connectivity changes in the frontotemporal areas reflect figure–ground reversal in multivoiced music

Increased fronto-temporal connectivity by modified melody in real music

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