{"title":"Abnormal electrical brain responses to time deviance in beat deafness.","authors":"Véronique Martel, Isabelle Peretz","doi":"10.1016/j.neuropsychologia.2024.109060","DOIUrl":null,"url":null,"abstract":"<p><p>Humans have the spontaneous capacity to track the beat of music. Yet some individuals show marked difficulties. To investigate the neural correlates of this condition known as beat deafness, the cortical electric activity of ten beat-deaf adults, the largest cohort studied so far, as well as of 14 matched controls (Experiment 2), and 16 university students (Experiment 1) were examined. All were actively engaged in detecting anisochronous time-deviants in otherwise isochronous, metronome-like, sequences. As expected, participants with beat-deafness performed more poorly than controls; this behavioral impairment was accompanied by a reduced P300 component at the neurophysiological level, yet with intact N200. Additionally, the MMN following task-irrelevant intensity-deviants was not different between groups. Together the results suggest normal auditory predictions regarding upcoming tones but unreliable access to its representations. These results mirror the findings with pitch deviants in the pitch-based form of congenital amusia and provide a similar neural signature of the disorder on the pitch and time dimension.</p>","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":" ","pages":"109060"},"PeriodicalIF":2.0000,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Neuropsychologia","FirstCategoryId":"102","ListUrlMain":"https://doi.org/10.1016/j.neuropsychologia.2024.109060","RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BEHAVIORAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Humans have the spontaneous capacity to track the beat of music. Yet some individuals show marked difficulties. To investigate the neural correlates of this condition known as beat deafness, the cortical electric activity of ten beat-deaf adults, the largest cohort studied so far, as well as of 14 matched controls (Experiment 2), and 16 university students (Experiment 1) were examined. All were actively engaged in detecting anisochronous time-deviants in otherwise isochronous, metronome-like, sequences. As expected, participants with beat-deafness performed more poorly than controls; this behavioral impairment was accompanied by a reduced P300 component at the neurophysiological level, yet with intact N200. Additionally, the MMN following task-irrelevant intensity-deviants was not different between groups. Together the results suggest normal auditory predictions regarding upcoming tones but unreliable access to its representations. These results mirror the findings with pitch deviants in the pitch-based form of congenital amusia and provide a similar neural signature of the disorder on the pitch and time dimension.
期刊介绍:
Neuropsychologia is an international interdisciplinary journal devoted to experimental and theoretical contributions that advance understanding of human cognition and behavior from a neuroscience perspective. The journal will consider for publication studies that link brain function with cognitive processes, including attention and awareness, action and motor control, executive functions and cognitive control, memory, language, and emotion and social cognition.