Electrical brain responses to beat irregularities in two cases of beat deafness
Beat deafness, a recently documented form of congenital amusia, provides a unique window into functional specialization of neural circuitry for the processing of musical stimuli: Beat-deaf individuals exhibit deficits that are specific to the detection of a regular beat in music and the ability to m...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2016-02-01
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| Series: | Frontiers in Neuroscience |
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| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fnins.2016.00040/full |
| _version_ | 1831644203113775104 |
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| author | Brian eMathias Brian eMathias Pascale eLidji Pascale eLidji Henkjan eHoning Caroline ePalmer Caroline ePalmer Isabelle ePeretz Isabelle ePeretz |
| author_facet | Brian eMathias Brian eMathias Pascale eLidji Pascale eLidji Henkjan eHoning Caroline ePalmer Caroline ePalmer Isabelle ePeretz Isabelle ePeretz |
| author_sort | Brian eMathias |
| collection | DOAJ |
| description | Beat deafness, a recently documented form of congenital amusia, provides a unique window into functional specialization of neural circuitry for the processing of musical stimuli: Beat-deaf individuals exhibit deficits that are specific to the detection of a regular beat in music and the ability to move along with a beat. Studies on the neural underpinnings of beat processing in the general population suggest that the auditory system is capable of pre-attentively generating a predictive model of upcoming sounds in a rhythmic pattern, subserved largely within auditory cortex and reflected in mismatch negativity (MMN) and P3 event-related potential (ERP) components. The current study examined these neural correlates of beat perception in two beat-deaf individuals, Mathieu and Marjorie, and a group of control participants under conditions in which auditory stimuli were either attended or ignored. Compared to control participants, Mathieu demonstrated reduced behavioral sensitivity to beat omissions in metrical patterns, and Marjorie showed a bias to identify irregular patterns as regular. ERP responses to beat omissions reveal an intact pre-attentive system for processing beat irregularities in cases of beat deafness, reflected in the MMN component, and provide partial support for abnormalities in later cognitive stages of beat processing, reflected in an unreliable P3b component exhibited by Mathieu – but not Marjorie – compared to control participants. P3 abnormalities observed in the current study resemble P3 abnormalities exhibited by individuals with pitch-based amusia, and are consistent with attention or auditory-motor coupling accounts of deficits in beat perception. |
| first_indexed | 2024-12-19T13:13:59Z |
| format | Article |
| id | doaj.art-b51a9edf845744c59416c2a874b3b96e |
| institution | Directory Open Access Journal |
| issn | 1662-453X |
| language | English |
| last_indexed | 2024-12-19T13:13:59Z |
| publishDate | 2016-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Neuroscience |
| spelling | doaj.art-b51a9edf845744c59416c2a874b3b96e2022-12-21T20:19:52ZengFrontiers Media S.A.Frontiers in Neuroscience1662-453X2016-02-011010.3389/fnins.2016.00040167420Electrical brain responses to beat irregularities in two cases of beat deafnessBrian eMathias0Brian eMathias1Pascale eLidji2Pascale eLidji3Henkjan eHoning4Caroline ePalmer5Caroline ePalmer6Isabelle ePeretz7Isabelle ePeretz8McGill UniversityMcGill UniversityMcGill UniversityMcGill UniversityUniversity of AmsterdamMcGill UniversityMcGill UniversityMcGill UniversityUniversity of MontrealBeat deafness, a recently documented form of congenital amusia, provides a unique window into functional specialization of neural circuitry for the processing of musical stimuli: Beat-deaf individuals exhibit deficits that are specific to the detection of a regular beat in music and the ability to move along with a beat. Studies on the neural underpinnings of beat processing in the general population suggest that the auditory system is capable of pre-attentively generating a predictive model of upcoming sounds in a rhythmic pattern, subserved largely within auditory cortex and reflected in mismatch negativity (MMN) and P3 event-related potential (ERP) components. The current study examined these neural correlates of beat perception in two beat-deaf individuals, Mathieu and Marjorie, and a group of control participants under conditions in which auditory stimuli were either attended or ignored. Compared to control participants, Mathieu demonstrated reduced behavioral sensitivity to beat omissions in metrical patterns, and Marjorie showed a bias to identify irregular patterns as regular. ERP responses to beat omissions reveal an intact pre-attentive system for processing beat irregularities in cases of beat deafness, reflected in the MMN component, and provide partial support for abnormalities in later cognitive stages of beat processing, reflected in an unreliable P3b component exhibited by Mathieu – but not Marjorie – compared to control participants. P3 abnormalities observed in the current study resemble P3 abnormalities exhibited by individuals with pitch-based amusia, and are consistent with attention or auditory-motor coupling accounts of deficits in beat perception.http://journal.frontiersin.org/Journal/10.3389/fnins.2016.00040/fullElectroencephalographyEvent-related potentialsmismatch negativityCongenital Amusiabeat deafness |
| spellingShingle | Brian eMathias Brian eMathias Pascale eLidji Pascale eLidji Henkjan eHoning Caroline ePalmer Caroline ePalmer Isabelle ePeretz Isabelle ePeretz Electrical brain responses to beat irregularities in two cases of beat deafness Frontiers in Neuroscience Electroencephalography Event-related potentials mismatch negativity Congenital Amusia beat deafness |
| title | Electrical brain responses to beat irregularities in two cases of beat deafness |
| title_full | Electrical brain responses to beat irregularities in two cases of beat deafness |
| title_fullStr | Electrical brain responses to beat irregularities in two cases of beat deafness |
| title_full_unstemmed | Electrical brain responses to beat irregularities in two cases of beat deafness |
| title_short | Electrical brain responses to beat irregularities in two cases of beat deafness |
| title_sort | electrical brain responses to beat irregularities in two cases of beat deafness |
| topic | Electroencephalography Event-related potentials mismatch negativity Congenital Amusia beat deafness |
| url | http://journal.frontiersin.org/Journal/10.3389/fnins.2016.00040/full |
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