DYNAMIC ATTENDING AND THE PERCEPTION OF PATTERNS IN TIME

这项研究的目的是找出决定因素 监听者检测、辨别或识别 各种类型的听觉和视听模式。有待研究的模式 包括音调、频谱复杂非语音、语音 和视听刺激。计划进行四条相关的调查。 1.注意声调模式中的信息。这一行 调查将利用自适应跟踪程序来评估变化 纯音的检测阈值和频率分辨率 模式与预期的时间起效或频率的偏差 目标音调各不相同。 2.注意频谱复杂声音模式中的事件。这 研究重点将放在光谱复杂事件的辨别上 在时间模式中。这些实验将检验-靶向 注意遵循程序的频谱复杂声音的模式 类似于纯音使用的音调。 3.言语知觉中的动态预期。动态的影响 语音识别的期望值将在这里进行研究 发音率语境效应研究的继续(Kidd，1989)。 利率预期对发声知觉的影响 停止辅音将在各种语音语境中进行检查以进行测试 效果的概括性和更准确地确定 言语中时间预期的产生。 4.注意两种方式：视听刺激的知觉。 跨通道对动态信息注意的影响 视听显示将使用非语音刺激进行检查。这 调查将确定动态预期所基于的程度 在视觉信息上可以促进听觉感知。具有以下功能的听众 不同水平的唇读熟练程度和听觉能力将 接受测试。

The aim of this research is to identify the factors that determine listeners' abilities to detect, discriminate, or identify, events within various types of auditory and audiovisual patterns. Patterns to be studied include sequences of tones, spectrally complex non-speech sounds, speech, and audiovisual stimuli. Four related lines of investigation are planned. 1. Attention to information in patterns of tones. This line of investigation will utilize adaptive tracking procedures to assess changes in detection thresholds and frequency resolving power for pure tones in patterns as the deviation from the expected temporal onset or frequency of a target tone varies. 2. Attention to events in patterns of spectrally complex sounds. This research will focus on the discrimination of spectrally complex events within temporal patterns. The experiments will examine-the targeting of attention in patterns of spectrally complex sounds following procedures similar to those used with pure tones. 3. Dynamic expectancies in speech_perception. The influence of dynamic expectancies on the identification of speech sounds will be studied in this continuation of research on articulatory-rate context effects (Kidd, 1989). The observed effect of rate expectations on the perception of voicing in stop consonants will be examined in a variety of speech contexts to test the generality of the effect and to determine more precisely the basis for the generation of temporal expectancies in speech. 4. Attending to two modalities: The perception of audiovisual stimuli. Cross-modality influences on attention to information in dynamic audiovisual displays will be examined using non-speech stimuli. This investigation will determine the extent to which dynamic expectancies based on visual information can facilitate auditory perception. Listeners with different levels of lip-reading proficiency and auditory capabilities will be tested.