Brain response to birdsongs in bird experts
Brain response to birdsongs in bird experts
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DOI：
10.1097/wnr.0b013e328013cea9
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发表时间：
2007-03-05
期刊：
影响因子：
1.7
通讯作者：
Belin, Pascal
中科院分区：
文献类型：
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作者：
Chartrand, Jean-Pierre;Filion-Bilodeau, Sarah;Belin, Pascal
听觉专业知识主要是与音乐处理有关的研究，但专家听觉处理也可能涉及非音乐听觉刺激，例如鸟类专家的鸟鸣。本研究采用脑电图法对鸟类专家和鸟类新手的听觉诱发电位进行了测量，研究了鸟类专家和新手与鸟类专业知识的神经相关性。当参与者执行简单的目标检测任务(纯音)时，三种类别(鸟鸣、环境声和声音)的听觉刺激以伪随机顺序呈现。我们在鸟类专家和新手身上观察到了相似的N100成分的幅度和分布。相比之下，鸟类专家在Pz和Cz电极上的P200分量的幅度明显较小，反映了这种积极的更正面的地形图。值得注意的是，不仅在鸟鸣方面观察到了这种群体差异，而且在声音和环境声音方面也观察到了这种差异，这表明鸟类专家在处理方面的总体差异并不局限于专业知识类别。
Auditory expertise has mostly been studied in relation to musical processing, but expert auditory processing can also involve nonmusical auditory stimuli, such as birdsongs in bird experts. In this study, the neural correlates of bird expertise were investigated by using electroencephalography to measure auditory-evoked potentials in bird experts and novices. Auditory stimuli in three categories (birdsongs, environmental sounds and voices) were presented in a pseudo-random order while participants performed a simple target detection task (pure tone). We observed similar amplitudes and distributions of the N100-comporent in bird experts and novices. In contrast, the amplitude of the P200 component was significantly smaller in bird experts at the Pz and Cz electrodes, reflecting a more frontal topography of this positivity. Notably, this group difference was observed not only for birdsongs, but also for voices and environmental sounds, suggesting a general processing difference in bird experts, not restricted to the category of expertise.