Adaptation to the environment is a universal property of perception across all sensory modalities. It can enhance the salience of new events in an ongoing background and helps maintain perceptual constancy in the face of variable sensory input. Several contrastive adaptation effects have been identified using sounds within the categories of human voice and musical instruments. The present study investigated whether such contrast effects can occur between voice and nonvoice stimulus categories. A 10-step continuum between "voice" (/a/, /o/, or /u/ vowels) and "instrument" (bassoon, horn, or viola) sounds was generated for each of the nine possible pairs. In each trial, an adaptor, either a voice or instrument, was played four times and was followed by a target from along the appropriate continuum. When trials with voice and instrumental adaptors were grouped into separate blocks, strong contrastive adaptation effects were observed, with the target more likely to be identified as a voice following instrumental adaptors and vice versa (Experiment 1). The effects were not observed for visual image adaptors (Experiment 2). The effects were somewhat larger when the adaptors and the target were presented to the same than to different ears, but significant adaptation was observed in both conditions, suggesting contributions of central mechanisms, following binaural integration (Experiment 3). The effect accumulated when the same type of adaptor was presented consecutively and persisted following the end of the adaptors (Experiment 4). The discovery of voice-nonvoice contrastive pairs opens the possibility of studying perceptual or neuronal voice selectivity while keeping acoustic features constant. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

中文翻译：

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沿浊音-非浊音连续体的对比适应效果。


对环境的适应是所有感官模式中感知的普遍属性。它可以在持续的背景下增强新事件的显著性，并有助于在面对可变的感官输入时保持感知的恒定性。已经使用人声和乐器类别中的声音确定了几种对比适应效果。本研究调查了语音和非语音刺激类别之间是否会出现这种对比效应。“声音”（/a/、/o/ 或 /u//元音）和“乐器”（巴松管、圆号或中提琴）声音之间的 10 步连续体是为九对可能的音对中的每对生成的。在每次试验中，一个适配器（声音或乐器）被播放四次，然后是来自适当连续体的目标。当将语音和乐器适配器的试验分组到单独的块中时，观察到强烈的对比适应效应，目标更有可能被识别为乐器适配器之后的语音，反之亦然（实验 1）。未观察到视觉图像适配器的效果（实验 2）。当适配器和目标呈现给相同的耳朵时，效果比呈现给不同的耳朵要大一些，但在两种情况下都观察到显着的适应，表明在双耳整合之后，中央机制的贡献（实验 3）。当相同类型的接头蛋白连续出现并在接头蛋白结束后持续存在时，效果会累积（实验 4）。语音-非语音对比对的发现为在保持声学特征恒定的同时研究感知或神经元语音选择性提供了可能性。（PsycInfo 数据库记录 （c） 2024 APA，保留所有权利）。