Lelo-de-Larrea-Mancera E Sebastian, Rodríguez-Agudelo Yaneth, Solís-Vivanco Rodolfo
Neuropsychology Department, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Av. Insurgentes Sur 3877, Col. La Fama, Mexico City 14269, Mexico.
Neuropsychology Department, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Av. Insurgentes Sur 3877, Col. La Fama, Mexico City 14269, Mexico; School of Psychology, Universidad Nacional Autónoma de México, Av. Universidad 3004, Mexico City 04510, Mexico.
Neuropsychologia. 2017 Jun;100:44-50. doi: 10.1016/j.neuropsychologia.2017.04.001. Epub 2017 Apr 4.
Music represents a complex form of human cognition. To what extent our auditory system is attuned to music is yet to be clearly understood. Our principal aim was to determine whether the neurophysiological operations underlying pre-attentive auditory change detection (N1 enhancement (N1e)/Mismatch Negativity (MMN)) and the subsequent involuntary attentional reallocation (P3a) towards infrequent sound omissions, are influenced by differences in musical content. Specifically, we intended to explore any interaction effects that rhythmic and pitch dimensions of musical organization may have over these processes. Results showed that both the N1e and MMN amplitudes were differentially influenced by rhythm and pitch dimensions. MMN latencies were shorter for musical structures containing both features. This suggests some neurocognitive independence between pitch and rhythm domains, but also calls for further address on possible interactions between both of them at the level of early, automatic auditory detection. Furthermore, results demonstrate that the N1e reflects basic sensory memory processes. Lastly, we show that the involuntary switch of attention associated with the P3a reflects a general-purpose mechanism not modulated by musical features. Altogether, the N1e/MMN/P3a complex elicited by infrequent sound omissions revealed evidence of musical influence over early stages of auditory perception.
音乐代表了一种复杂的人类认知形式。我们的听觉系统在多大程度上适应音乐，目前尚不清楚。我们的主要目的是确定，对于罕见声音遗漏，先于注意力的听觉变化检测（N1增强（N1e）/失配负波（MMN））以及随后的非自愿注意力重新分配（P3a）所基于的神经生理操作，是否会受到音乐内容差异的影响。具体而言，我们旨在探究音乐组织的节奏和音高维度对这些过程可能产生的任何交互作用。结果表明，N1e和MMN的波幅均受到节奏和音高维度的不同影响。对于同时包含这两种特征的音乐结构，MMN潜伏期较短。这表明音高和节奏域之间存在一定的神经认知独立性，但也需要进一步探讨两者在早期自动听觉检测层面可能存在的相互作用。此外，结果表明N1e反映了基本的感觉记忆过程。最后，我们表明与P3a相关的非自愿注意力切换反映了一种不受音乐特征调节的通用机制。总之，由罕见声音遗漏引发的N1e/MMN/P3a复合体揭示了音乐对听觉感知早期阶段产生影响的证据。
