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Articles, Behavioral/Cognitive

Early Musical Training and White-Matter Plasticity in the Corpus Callosum: Evidence for a Sensitive Period

Christopher J. Steele, Jennifer A. Bailey, Robert J. Zatorre and Virginia B. Penhune
Journal of Neuroscience 16 January 2013, 33 (3) 1282-1290; DOI: https://doi.org/10.1523/JNEUROSCI.3578-12.2013
Christopher J. Steele
1Department of Psychology, Concordia University, Montréal, Québec, Canada H4B 1R6,
2Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, 04103 Leipzig, Germany, and
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Jennifer A. Bailey
1Department of Psychology, Concordia University, Montréal, Québec, Canada H4B 1R6,
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Robert J. Zatorre
3Montreal Neurological Hospital and Institute, McGill University, Montreal, Quebec, Canada H3A 2B4
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Virginia B. Penhune
1Department of Psychology, Concordia University, Montréal, Québec, Canada H4B 1R6,
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    Figure 1.

    Behavioral task and group performance data. A, Temporal motor sequence task. The learned sequence, visually presented stimuli, and response method are shown. B, Performance data from the TMST. PCOR and PSYN are shown across blocks. Group means for each measure are plotted for each day (d) and block (b): ET are shown in red, LT in blue, and NM in black. Error bars depict ±SEM. The vertical dotted line between d1b3 and d2b1 denotes the boundary between days of training.

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    Figure 2.

    ET versus LT group FA differences and extractions. A, ET > LT group difference in skeletonized FA (blue) in posterior midbody of the corpus callosum. The tract based on this seed connects the right and left sensorimotor cortices and is represented as the red-yellow underlay (where red represents a threshold of 1–10% of maximum particle count and bright yellow depicts 10% and greater). B, FA (top) and RD (bottom) values from the peak CC voxel plotted against group, age of onset, and PSYN Final. Values for ET are depicted in red, LT in blue, and NM in black. Group means are depicted with filled circles. Raw values were used for all plots while statistics were based on the corrected values as stated in the text. **p < 0.001.

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    Figure 3.

    Correlation between FA and age of onset of musical training. FA was significantly correlated with age of onset of musical training across musicians in bilateral rostral body and midbody of the corpus callosum (red). This region overlaps with the more posterior midbody location identified in the group contrast between ET and LT (overlayed in semitransparent blue visible in the top left and bottom right slices).

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    Figure 4.

    Whole-brain FA correlations with PSYN Final. A, Skeleton voxels significantly correlated with PSYN Final in left temporal lobe and posterior limb of the internal and external capsules (blue). B, Mean values extracted from the region of significant correlation plotted against group, age of onset, and PSYN Final. ET are shown in red, LT in blue, and NM in black. Group means are depicted with filled circles. Note that raw values were used for all plots while statistics were based on the corrected values as stated in the text. *p < 0.05.

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    Table 1.

    Group demographic variables

    ETLTNM
    n181817
    Male/female10/814/410/7
    Age of onset of musical training (years)
        Mean (SD)5.72 (±1.13)10.78 (±2.46)—
        Range3–78–18—
    Age (years)*
        Mean (SD)22.72 (±4.14)27.61 (±5.34)26.41 (±4.71)
        Range18–3219–3521–36
    Years of formal training
        Mean (SD)11.5 (±3.22)9.42 (±5.13)0.35 (±0.53)
        Range3–161–200–1.58
    Years of experience
        Mean (SD)16.72 (±3.89)16.58 (±4.88)0.68 (±0.61)
        Range12–259.5–240–2
    Hours of current practice (hours per week)
        Mean (SD)15 (±10.20)13.25 (±7.52)—
        Range3–35.54–34—
    • ↵*Significant difference in age between ET and LT; t(34) = 3.07, p < 0.05.

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The Journal of Neuroscience: 33 (3)
Journal of Neuroscience
Vol. 33, Issue 3
16 Jan 2013
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Early Musical Training and White-Matter Plasticity in the Corpus Callosum: Evidence for a Sensitive Period
Christopher J. Steele, Jennifer A. Bailey, Robert J. Zatorre, Virginia B. Penhune
Journal of Neuroscience 16 January 2013, 33 (3) 1282-1290; DOI: 10.1523/JNEUROSCI.3578-12.2013

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Early Musical Training and White-Matter Plasticity in the Corpus Callosum: Evidence for a Sensitive Period
Christopher J. Steele, Jennifer A. Bailey, Robert J. Zatorre, Virginia B. Penhune
Journal of Neuroscience 16 January 2013, 33 (3) 1282-1290; DOI: 10.1523/JNEUROSCI.3578-12.2013
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