Increased fronto-temporal connectivity by modified melody in real music

Kim, Chan Hee; Seol, Jae Hong; Jin, Sunghwan; Kim, June Sic; Kim, Youn; Yi, Suk Won; Chung, Chun Kee

doi:10.1371/journal.pone.0235770

Cited by 3 publications

(13 citation statements)

References 39 publications

(67 reference statements)

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“…Effective connectivity for 12 connections was calculated by LTDMI ( Jin et al, 2010 ). The LTDMI is an information-theoretic measure of functional coupling based on mutual information (MI) ( Jin et al, 2011 , 2012 ; Kim et al, 2020 ), which predicts information transmission between two time series.…”

Section: Methodsmentioning

confidence: 99%

Dissociation of Connectivity for Syntactic Irregularity and Perceptual Ambiguity in Musical Chord Stimuli

et al. 2021

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Musical syntax has been studied mainly in terms of “syntactic irregularity” in harmonic/melodic sequences. However, “perceptual ambiguity” referring to the uncertainty of judgment/classification of presented stimuli can in addition be involved in our musical stimuli using three different chord sequences. The present study addresses how “syntactic irregularity” and “perceptual ambiguity” on musical syntax are dissociated, in terms of effective connectivity between the bilateral inferior frontal gyrus (IFGs) and superior temporal gyrus (STGs) by linearized time-delayed mutual information (LTDMI). Three conditions were of five-chord sequences with endings of dominant to tonic, dominant to submediant, and dominant to supertonic. The dominant to supertonic is most irregular, compared with the regular dominant to tonic. The dominant to submediant of the less irregular condition is the most ambiguous condition. In the LTDMI results, connectivity from the right to the left IFG (IFG-LTDMI) was enhanced for the most irregular condition, whereas that from the right to the left STG (STG-LTDMI) was enhanced for the most ambiguous condition (p = 0.024 in IFG-LTDMI, p < 0.001 in STG-LTDMI, false discovery rate (FDR) corrected). Correct rate was negatively correlated with STG-LTDMI, further reflecting perceptual ambiguity (p = 0.026). We found for the first time that syntactic irregularity and perceptual ambiguity coexist in chord stimulus testing musical syntax and that the two processes are dissociated in interhemispheric connectivities in the IFG and STG, respectively.

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Section: Methodsmentioning

confidence: 99%

Dissociation of Connectivity for Syntactic Irregularity and Perceptual Ambiguity in Musical Chord Stimuli

et al. 2021

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“…Variations II and IV were chosen as the two conditions for estimating connectivity differences, including the identical TTLS melody. Time windows were 2,100 ms long, incorporating the "C5-C5-G5-G5-A5" melody, as based on a previous study 9 . Time windows of 2,100 ms appeared four times per variation (Fig.…”

Section: Time Windowmentioning

confidence: 99%

“…In our recent study using Mozart’s variation KV 265 9 , we observed changes in frontotemporal connectivity from the left Heschl’s gyrus (HG) to the left inferior frontal gyrus (IFG). This connectivity was contingent upon whether the first five notes of the original melody of TTLS — “C5-C5-G5-G5-A5” — were present in the initial passages of each variation.…”

Section: Introductionmentioning

confidence: 99%

“…These findings were consistent across target phrases lasting 2.1 s, equivalent to a five-quarter note length of “C5-C5-G5-G5-A5” at the beginning of each variation in two pairs — “ Variations I and II ” and “ Variations III and IV ”. In our previous study 9 , we ruled out the effect of repetition 10 by analyzing only the “C5-C5-G5-G5-A5” in the beginning of each condition. Although both pairs shared the same presence or absence of the original melody, they differed in the lower voices (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…We estimated the effective connectivity from the left IFG to the right HG using linearized time-delayed mutual information (LTDMI) 11 , a measure employed in our previous study 9 . LTDMI allows for estimating information transmission between two regional sources and observing the directionality in interhemispheric and interregional connectivity.…”

Section: Introductionmentioning

confidence: 99%

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

Kim,

Seo,

Chung

2024

Preprint

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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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Short-Term Effect of Auditory Stimulation on Neural Activities: A Scoping Review of Longitudinal Electroencephalography and Magnetoencephalography Studies

Kobayashi,

Shiba,

Honda

et al. 2024

Brain Sciences

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Explored through EEG/MEG, auditory stimuli function as a suitable research probe to reveal various neural activities, including event-related potentials, brain oscillations and functional connectivity. Accumulating evidence in this field stems from studies investigating neuroplasticity induced by long-term auditory training, specifically cross-sectional studies comparing musicians and non-musicians as well as longitudinal studies with musicians. In contrast, studies that address the neural effects of short-term interventions whose duration lasts from minutes to hours are only beginning to be featured. Over the past decade, an increasing body of evidence has shown that short-term auditory interventions evoke rapid changes in neural activities, and oscillatory fluctuations can be observed even in the prestimulus period. In this scoping review, we divided the extracted neurophysiological studies into three groups to discuss neural activities with short-term auditory interventions: the pre-stimulus period, during stimulation, and a comparison of before and after stimulation. We show that oscillatory activities vary depending on the context of the stimuli and are greatly affected by the interplay of bottom-up and top-down modulational mechanisms, including attention. We conclude that the observed rapid changes in neural activitiesin the auditory cortex and the higher-order cognitive part of the brain are causally attributed to short-term auditory interventions.

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Increased fronto-temporal connectivity by modified melody in real music

Cited by 3 publications

References 39 publications

Dissociation of Connectivity for Syntactic Irregularity and Perceptual Ambiguity in Musical Chord Stimuli

Dissociation of Connectivity for Syntactic Irregularity and Perceptual Ambiguity in Musical Chord Stimuli

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

Short-Term Effect of Auditory Stimulation on Neural Activities: A Scoping Review of Longitudinal Electroencephalography and Magnetoencephalography Studies

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