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Pitch contour impairment in congenital amusia: New insights from the Self-paced Audio-visual Contour Task (SACT)
Lu, Xuejing1,2,3,4; Sun, Yanan3,4; Ho, Hao Tam5,6; Thompson, William Forde3,4
2017-06-15
发表期刊PLOS ONE
ISSN1932-6203
文章类型Article
卷号12期号:6页码:1-15
摘要

Individuals with congenital amusia usually exhibit impairments in melodic contour processing when asked to compare pairs of melodies that may or may not be identical to one another. However, it is unclear whether the impairment observed in contour processing is caused by an impairment of pitch discrimination, or is a consequence of poor pitch memory. To help resolve this ambiguity, we designed a novel Self-paced Audio-visual Contour Task (SACT) that evaluates sensitivity to contour while placing minimal burden on memory. In this task, participants control the pace of an auditory contour that is simultaneously accompanied by a visual contour, and they are asked to judge whether the two contours are congruent or incongruent. In Experiment 1, melodic contours varying in pitch were presented with a series of dots that varied in spatial height. Amusics exhibited reduced sensitivity to audio-visual congruency in comparison to control participants. To exclude the possibility that the impairment arises from a general deficit in cross-modal mapping, Experiment 2 examined sensitivity to cross-modal mapping for two other auditory dimensions: timbral brightness and loudness. Amusics and controls were significantly more sensitive to large than small contour changes, and to changes in loudness than changes in timbre. However, there were no group differences in cross-modal mapping, suggesting that individuals with congenital amusia can comprehend spatial representations of acoustic information. Taken together, the findings indicate that pitch contour processing in congenital amusia remains impaired even when pitch memory is relatively unburdened.

DOI10.1371/journal.pone.0179252
收录类别SCI
语种英语
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000403364600027
WOS标题词Science & Technology
关键词[WOS]CROSS-MODAL SIMILARITY ; SHORT-TERM-MEMORY ; TONE-DEAFNESS ; SPATIAL REPRESENTATION ; SPEECH INTONATION ; MANDARIN CHINESE ; MELODIC CONTOUR ; PERCEPTION ; MUSIC ; DISCRIMINATION
引用统计
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/21587
专题中国科学院心理健康重点实验室
作者单位1.Inst Psychol, CAS Key Lab Mental Hlth, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Dept Psychol, Beijing, Peoples R China
3.Macquarie Univ, Dept Psychol, Sydney, NSW, Australia
4.ARC Ctr Excellence Cognit & Its Disorders, Sydney, NSW, Australia
5.Univ Pisa, Dept Translat Res New Technol Med & Surg, Pisa, Italy
6.Univ Sydney, Sch Psychol, Sydney, NSW, Australia
推荐引用方式
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Lu, Xuejing,Sun, Yanan,Ho, Hao Tam,et al. Pitch contour impairment in congenital amusia: New insights from the Self-paced Audio-visual Contour Task (SACT)[J]. PLOS ONE,2017,12(6):1-15.
APA Lu, Xuejing,Sun, Yanan,Ho, Hao Tam,&Thompson, William Forde.(2017).Pitch contour impairment in congenital amusia: New insights from the Self-paced Audio-visual Contour Task (SACT).PLOS ONE,12(6),1-15.
MLA Lu, Xuejing,et al."Pitch contour impairment in congenital amusia: New insights from the Self-paced Audio-visual Contour Task (SACT)".PLOS ONE 12.6(2017):1-15.
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