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標題: | 旋律處理腦區的移調容忍 Melody Transposition Tolerance in the Human Cortex: an fMRI Adaptation and MVPA Investigation |
作者: | 韓昀安 Yun-An Han |
指導教授: | 謝伯讓 Po-Jang Hsieh |
關鍵字: | 音樂認知,移調旋律容忍性,fMRI,adaptation, fMRI,fMRI adaptation,music cognition,melody perception,melody-transposition tolerance,multivariate cross-classification, |
出版年 : | 2024 |
學位: | 碩士 |
摘要: | 旋律知覺涉及固定不變的相對性表徵,使大多數人能夠在轉調後仍能辨識旋 律。這種旋律移調的不變特性在許多先前的行為研究中得到支持,而本研究預測 在神經層面上,也可以找到處理旋律時存在可容忍(tolerant to)旋律移調的腦區, 並且使用功能性磁振腦造影(fMRI)技術,同時以適應(adaptation)典範和多變 量模式交叉分類分析方法探討這一假設。與預測一致,本研究發現當受試者在聆 聽與原始旋律相同、且包括完全相同與移調後但相同的第二段旋律時,相較於聆 聽與原始不同的旋律,在左側的顳中回(MTG)一個神經叢表現出相對更強的適 應效應。另外,關鍵區域(ROI)和全腦探照燈(searchlight)的交叉分類分析顯 示,位於雙側的額下回(IFG)、中央前回(PreCG)、左側的頂下小葉(IPL)、右 側的角回(AG)和顳上回(STG)的活化模式在處理旋律資訊時,對旋律移調表 現出容忍性。這些發現暗示著從聽覺到運動皮質的音樂處理途徑中,皆可能存在 對旋律移調的容忍性。 Melody perception involves the consistent formation of relational representations, facilitating the recognition of melodies even after transposition by the majority of individuals. This inherent quality of melody transposition has garnered support from numerous preceding behavioral studies. Current study hypothesized the existence of regions that exhibit a notable tolerance to melody transposition during melody processing, and employed both an event-related adaptation approach and a multivariate pattern cross-classification (MVCC) analysis to test the hypothesis. In line with the expectations, a cluster in the left middle temporal gyrus (MTG) was identified, in which displayed heightened adaptation when participants were exposed to both identical and transposed-same melodies preceding the original ones, as opposed to melodies deviating from the originals. Further analysis using ROI and searchlight-based cross-classification unveiled that the BOLD patterns in the bilateral inferior frontal gyrus (IFG), precentral gyrus (PreCG), the left inferior parietal lobule (IPL), the right angular gyrus (AG), and the right superior temporal gyrus (STG) exhibited a capacity to tolerate melody transposition when discriminating between identical and different melodies preceding the originals. These findings suggest that the tolerance to melody transposition permeates the entire music processing pathway, spanning from the auditory cortex to the motor cortex. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/91599 |
DOI: | 10.6342/NTU202400180 |
全文授權: | 同意授權(限校園內公開) |
顯示於系所單位: | 心理學系 |
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