VISUAL STRATEGIES USED BY HEARING-IMPAIRED ADULTS

这项研究的长期目标是了解刺激 和任务要求的一种人类信息形式 处理.几乎所有的观察者，尤其是有缺陷的人， 听力，在困难的听力情况下依赖视觉信息。 本研究的具体目的是探讨视觉策略 使用的听障成人在speechreading和相关这些 语音阅读性能水平。将使用眼睛监测技术 以获得关于个人在试图 speechread，概念状态如何影响外观以及视觉线索 是在朗读时使用的。这些知识对于测试 关于刺激和任务要求的假设。一个 对视觉策略的理解对 设计感官辅助设备和开发基于研究的干预措施 协议，以增强语音阅读性能。 我们将分析那些患有口腔失聪的成年人的眼睛注视模式， 表现出出色的语音阅读能力，并为听力受损的 在听力困难的情况下必须依靠语音阅读的人 situations.眼睛注视行为将被解释为 眼动的方向、持续时间和顺序 说话者的特定面部区域。眼睛凝视的模式将是 针对在言语阅读方面不同的受试者组进行评估 性能设计了额外的实验，其中个体 受试者作为他们自己的控制和认知状态或物理 操纵语音阅读信号的特性。可见 语音事件的空气动力学相关性将与视觉 演讲中的策略这些初步结果 研究将被用来开发额外的假设， 知觉学习和康复策略的个人与 听力障碍

The long-term objective of this research is to understand the stimulus and task demands in speechreading, a form of human information processing. Virtually all observers, and especially people with impaired hearing, rely on visual information in difficult listening situations. The specific aim of this study is to investigate the visual strategies used by hearing-impaired adults during speechreading and relate these to speechreading performance levels. Eye monitoring techniques will be used to gain knowledge regarding where an individual looks when trying to speechread, how conceptual states influence looking and what visual cues are used during speechreading. This knowledge is critical to test hypotheses regarding the stimulus and task demands in speechreading. An understanding of visual strategies has important implications for the design of sensory aids and development of research-based intervention protocols to augment speechreading performance. Patterns of eye gaze will be analyzed for oral-deaf adults who demonstrate excellent speechreading performance and for hearing-impaired individuals who must rely on speechreading in difficult listening situations. Eye gaze behaviors will be interpreted with regard to direction, duration and sequence of eye movement associated with particular facial regions of a talker. Patterns of eye gaze will be evaluated for groups of subjects who vary with respect to speechreading performance. Additional experiments are designed in which individual subjects serve as their own controls and cognitive states or physical characteristics of the speechreading signal are manipulated. Visible aerodynamic correlates for speech events will be correlated with visual strategies during speechreading. The results of these preliminary studies will be used to develop additional hypotheses regarding perceptual learning and rehabilitation strategies for individuals with hearing-impairments.