Wakita Masumi
Department of Neuroscience, Primate Research Institute, Kyoto University Inuyama, Japan.
Front Hum Neurosci. 2016 Dec 27;10:656. doi: 10.3389/fnhum.2016.00656. eCollection 2016.
Observing another person's piano play and listening to a melody interact with the observer's execution of piano play. This interaction is thought to occur because the execution of musical-action and the perception of both musical-action and musical-sound share a common representation in which the frontoparietal network is involved. However, it is unclear whether the perceptions of observed piano play and listened musical sound use a common neural resource. The present study used near-infrared spectroscopy to determine whether the interaction between the perception of musical-action and musical-sound sequences appear in the left prefrontal area. Measurements were obtained while participants watched videos that featured hands playing familiar melodies on a piano keyboard. Hand movements were paired with either a congruent or an incongruent melody. Two groups of participants (nine well-trained and nine less-trained) were instructed to identify the melody according to hand movements and to ignore the accompanying auditory track. Increased cortical activation was detected in the well-trained participants when hand movements were paired with incongruent melodies. Therefore, an interference effect was detected regarding the processing of action and sound sequences, indicating that musical-action sequences may be perceived with a representation that is also used for the perception of musical-sound sequences. However, in less-trained participants, such a contrast was not detected between conditions despite both groups featuring comparable key-touch reading abilities. Therefore, the current results imply that the left prefrontal area is involved in translating temporally structured sequences between domains. Additionally, expertise may be a crucial factor underlying this translation.
观察他人弹奏钢琴以及聆听旋律与观察者自身弹奏钢琴的行为相互作用。人们认为这种相互作用之所以发生，是因为音乐动作的执行以及对音乐动作和音乐声音的感知共享一种共同的表征，其中涉及额顶叶网络。然而，尚不清楚对观察到的钢琴弹奏和听到的音乐声音的感知是否使用共同的神经资源。本研究使用近红外光谱法来确定音乐动作和音乐声音序列的感知之间的相互作用是否出现在左前额叶区域。在参与者观看展示手部在钢琴键盘上弹奏熟悉旋律的视频时进行测量。手部动作与一致或不一致的旋律配对。两组参与者（九名训练有素的和九名训练较少的）被指示根据手部动作识别旋律并忽略伴随的音轨。当手部动作与不一致的旋律配对时，在训练有素的参与者中检测到皮质激活增加。因此，在动作和声音序列的处理方面检测到了干扰效应，表明音乐动作序列可能通过一种也用于音乐声音序列感知的表征来被感知。然而，在训练较少的参与者中，尽管两组的按键阅读能力相当，但在不同条件之间未检测到这种差异。因此，当前结果表明左前额叶区域参与了跨领域的时间结构化序列的转换。此外，专业知识可能是这种转换的关键因素。
