PERINATAL INFLUENCES ON DEVELOPING AUDITORY PERCEPTION

该研究项目的目标是全面、系统、 以及动物听觉发育的参数评估 模特。自然和任意的声音呈现给曝光的对象 正常的和非典型的围产期经历。 发展的感觉属性将从心理物理推断 创建新生儿对环境变化的反应图的缩放程序 听觉刺激。新生儿有规律的窥视延迟 鸡被用来衡量各种刺激的程度 被认为相似或不同的。受控信号检测分析 将决定纯色调和自然主义的绝对门槛 刺激在出生后的最初几天发生了变化。信号检测 分析将评估频率和时间分辨在这些 新生儿。 一系列的操作将评估 围产期噪音、产前酒精和早产孵化 感知力。如果这些操作影响了感官属性而不是 习惯性检测，或歧视，然后是不典型的围产期 经验将以更高、更微妙的方式导致赤字 注意力和知觉过程。 这项研究计划将有助于理解这些角色 在听觉发展方面的早期经验。这 研究也可能有助于理解非典型肺炎的影响 人类新生儿知觉发育的经验。操纵 包括越来越多的人类新生儿所经历的情况，以及 结果衡量标准与人类神经行为发育相关。 受过心理声学和人类训练的科学家合作 发展将最大限度地提供机会，找到 围产期行为发育。

The objective of this research program is a comprehensive, systematic, and parametric evaluation of developing auditory perceptions in an animal model. Naturalistic and arbitrary sounds are presented to subjects exposed to normal and atypical perinatal experiences. Developing sensory attributes will be inferred from psychophysical scaling procedures that create maps of neonates' responses to changes in auditory stimuli. Delays in the otherwise regular peeping of newborn chicks are used as measures of the extent to which various stimuli are perceived as similar or different. Controlled signal detection analyses will determine if absolute thresholds to pure tones and a naturalistic stimulus change over the first few postnatal days. Signal detection analyses will evaluate both frequency and temporal discriminations in these neonates. A series of manipulations will assess the effects of perinatal noise, prenatal ethanol, and premature hatching on measures of perception. If these manipulations affect sensory attributes but not habituation detection, or discrimination, then atypical perinatal experience will be shown to cause deficits in higher order, more subtle attentional ind perceptual processes. This research program will contribute to an understanding of the roles of early experience in the development of auditory perception. This research may also contribute to an understanding of the effects of atypical experiences on perceptual development in human neonates. Manipulations include conditions experienced by increasing numbers of human neonates, and the outcome measures are relevant to human neurobehavioral development. A collaboration of scientists trained in psychoacoustics and human development will maximize the opportunity to find general principles of perinatal behavioral development.