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Partially Overlapping Brain Networks for Singing and Cello Playing

Melanie Segado, Avrum Hollinger, Joseph Thibodeau, Virginia Penhune, Robert Zatorre
doi: https://doi.org/10.1101/257923
Melanie Segado
1Montreal Neurological Institute, Montreal, Quebec, Canada
2BRAMS International Laboratory for Brain, Music, and Sound Research, Montreal, Quebec, Canada
3CIRMMT Centre for Interdisciplinary Research in Music Media and Technology, Montreal, Quebec, Canada
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Avrum Hollinger
1Montreal Neurological Institute, Montreal, Quebec, Canada
3CIRMMT Centre for Interdisciplinary Research in Music Media and Technology, Montreal, Quebec, Canada
5IDMIL Input Devices and Music Interaction Laboratory, Montreal, Quebec, Canada
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Joseph Thibodeau
2BRAMS International Laboratory for Brain, Music, and Sound Research, Montreal, Quebec, Canada
3CIRMMT Centre for Interdisciplinary Research in Music Media and Technology, Montreal, Quebec, Canada
5IDMIL Input Devices and Music Interaction Laboratory, Montreal, Quebec, Canada
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Virginia Penhune
1Montreal Neurological Institute, Montreal, Quebec, Canada
2BRAMS International Laboratory for Brain, Music, and Sound Research, Montreal, Quebec, Canada
4Concordia University, Montreal, Quebec, Canada
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Robert Zatorre
1Montreal Neurological Institute, Montreal, Quebec, Canada
2BRAMS International Laboratory for Brain, Music, and Sound Research, Montreal, Quebec, Canada
3CIRMMT Centre for Interdisciplinary Research in Music Media and Technology, Montreal, Quebec, Canada
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1 Abstract

This research uses an MR-Compatible cello to compare functional brain activation during singing and cello playing within the same individuals to determine the extent to which arbitrary auditory-motor associations, like those required to play the cello, co-opt functional brain networks that evolved for singing. Musical instrument playing and singing both require highly specific associations between sounds and movements. Because these are both used to produce musical sounds, it is often assumed in the literature that their neural underpinnings are highly similar. However, singing is an evolutionarily old human trait, and the auditory-motor associations used for singing are also used for speech and nonspeech vocalizations. This sets it apart from the arbitrary auditory-motor associations required to play musical instruments. The pitch distribution of the cello is uniquely similar to that of the human voice, but cello playing is completely independent of the vocal apparatus, and can therefore be used to dissociate the auditory-vocal network from that of the auditory-motor network. While in the MR-Scanner, 11 expert cellists listened to and subsequently produced individual tones either by singing or cello playing. All participants were able to sing and play the target tones in tune (<50C deviation from target). We found that brain activity during cello playing directly overlaps with brain activity during singing in many areas within the auditory-vocal network. These areas include dorsal motor and premotor areas, SMA and Pre-SMA, STG, ACC, aINS, IPS(R), and Cerebellum but, notably, exclude the PAG and Basal Ganglia (Putamen). Second, that activity within the overlapping areas is positively correlated with, and therefore likely contributing to, both singing and playing in tune as shown by correlations with performance measures. Third, that activity in auditory areas is functionally connected with activity in dorsal motor and pre-motor areas, and that the connectivity between them is positively correlated with good performance. This functional connectivity suggests that the brain areas are working together to contribute to task performance and not just coincidently active. Last, our findings showed that cello playing may directly co-opt vocal areas (including larynx area of motor cortex), especially if training begins before age 7.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted January 31, 2018.
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Partially Overlapping Brain Networks for Singing and Cello Playing
Melanie Segado, Avrum Hollinger, Joseph Thibodeau, Virginia Penhune, Robert Zatorre
bioRxiv 257923; doi: https://doi.org/10.1101/257923
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Partially Overlapping Brain Networks for Singing and Cello Playing
Melanie Segado, Avrum Hollinger, Joseph Thibodeau, Virginia Penhune, Robert Zatorre
bioRxiv 257923; doi: https://doi.org/10.1101/257923

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