Assessment of sensorimotor cortical representation asymmetries and motor skills in violin players
Assessment of sensorimotor cortical representation asymmetries and motor skills in violin players
复制标题
小提琴演奏者感觉运动皮层表征不对称性和运动技能的评估
DOI：
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发表时间：
2007
影响因子：
3.4
通讯作者：
H. Dinse
中科院分区：
文献类型：
--
作者：
P. Schwenkreis;Susan El Tom;P. Ragert;B. Pleger;M. Tegenthoff;H. Dinse
作为使用依赖性可塑性的模型，专业音乐家的大脑已被广泛研究，以检查结构和功能适应熟练表演的独特要求。在这里，我们提供了一个组合的数据在初级运动和体感皮层的专业小提琴演奏者的运动性能和手的代表性，评估可能的行为后果的感觉运动皮层不对称的目的。我们研究了15名健康的右撇子专业小提琴演奏者和35名健康的非音乐家对照。运动和躯体感觉皮层不对称性进行了评估，通过记录运动输出地图后，经颅磁刺激从小手肌肉，并通过偶极子源定位后，正中神经和尺神经的电刺激体感诱发电位。使用一系列涵盖手部功能不同方面的标准化运动任务检查运动性能。小提琴演奏者的运动和躯体感觉皮层表现出明显的右大于左的不对称性，而非音乐家的对照组则没有表现出明显的半球间差异。音乐家的运动皮层和体感皮层的不对称程度是显著相关的。在行为水平上，运动表现没有显着差异之间的音乐家和nonmusicians。结果支持小提琴演奏者感觉运动皮层中左手表征的使用依赖性扩大。然而，这些皮层不对称并没有被伴随行为水平上的不对称改变所掩盖，这表明重组可能是特定于任务的，并且一般不会导致运动能力的改善。
As a model for use‐dependent plasticity, the brains of professional musicians have been extensively studied to examine structural and functional adaptation to unique requirements of skilled performance. Here we provide a combination of data on motor performance and hand representation in the primary motor and somatosensory cortex of professional violin players, with the aim of assessing possible behavioural consequences of sensorimotor cortical asymmetries. We studied 15 healthy right‐handed professional violin players and 35 healthy nonmusician controls. Motor and somatosensory cortex asymmetry was assessed by recording the motor output map after transcranial magnetic stimulation from a small hand muscle, and by dipole source localization of somatosensory evoked potentials after electrical stimulation of the median and ulnar nerves. Motor performance was examined using a series of standardized motor tasks covering different aspects of hand function. Violin players showed a significant right‐larger‐than‐left asymmetry of the motor and somatosensory cortex, whereas nonmusician controls showed no significant interhemispheric difference. The amount of asymmetry in the motor and somatosensory cortices of musicians was significantly correlated. At the behavioural level, motor performance did not significantly differ between musicians and nonmusicians. The results support a use‐dependent enlargement of the left hand representation in the sensorimotor cortex of violin players. However, these cortical asymmetries were not paralleled by accompanying altered asymmetries at a behavioural level, suggesting that the reorganisation might be task‐specific and does not lead to improved motor abilities in general.
猫感觉运动皮层皮质-皮质中继的形态特征。
DOI：
10.1093/cercor/7.2.100
发表时间：
1997
期刊：
Cerebral cortex (New York, N.Y. : 1991)
影响因子：
--
作者：
Porter,LL
通讯作者：
Porter,LL