多音高乐音感知过程中的神经重合检测策略
Neural coincidence detection strategies during perception of multi-pitch musical tones
摘要：
在听力测试中，使用30个同时播放两个音调的音乐声音录音来研究多音高感知，除了两个具有不和谐泛音频谱的锣声，判断粗糙度和分离度作为区分每个录音中两个音调的能力。13个声音来自西方吉他在一个八度音阶中演奏所有13个音程，其他声音主要来自非西方乐器，比较西方听众熟悉和不熟悉的乐器声音。此外，在耳蜗模型中处理声音，将机械基底膜运动转换为神经尖峰，然后进行后处理，模拟不同程度的重合检测。分离知觉对熟悉和陌生的声音有明显的区分，而粗糙知觉则没有。通过将感知与模拟相关联，发现了不同的感知策略：熟悉的声音与高重合度检测呈强正相关，其中仅剩下3-5个周期，而不熟悉的声音与低重合度检测相关。这分别对应于对音高和音色的关注。此外，分离感知显示了感知与熟悉和不熟悉声音之间的神经相关性之间的相反相关性。这与熟悉和不熟悉的声音之间的区别与分离的感知发现相关。
英文摘要：
Multi-pitch perception is investigated in a listening test using 30 recordings of musical sounds with two tones played simultaneously, except for two gong sounds with inharmonic overtone spectrum, judging roughness and separateness as the ability to tell the two tones in each recording apart. 13 sounds were from a Western guitar playing all 13 intervals in one octave, the other sounds were mainly from non-Western instruments comparing familiar with unfamiliar instrument sounds for Western listeners. Additionally the sounds were processed in a cochlear model transferring the mechanical basilar membrane motion into neural spikes followed by a post-processing simulating different degrees of coincidence detection. Separateness perception showed a clear distinction between familiar and unfamiliar sounds, while roughness perception did not. By correlating perception with simulation different perception strategies were found. Familiar sounds correlated strongly positive with high degrees of coincidence detection, where only 3-5 periodicities were left, while unfamiliar sounds correlated with low coincidence levels. This corresponds to an attention to pitch and timbre respectively. Additionally, separateness perception shows an opposite correlation between perception and neural correlates between familiar and unfamiliar sounds. This correlates with the perceptional finding of the distinction between familiar and unfamiliar sounds with separateness.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
