双感官障碍:中心视力损失和听力损失对视觉和听觉定位的影响
Ying-Zi Xiong1,2,3, Douglas A Addleman1,2,4, Nam Anh Nguyen1
1Department of Psychology, University of Minnesota, Minneapolis, Minnesota, United States.
Investigative ophthalmology & visual science
|September 13, 2023
概括
由于AMD导致的中部视力丧失会损害视觉局部化,但不会损害声音局部化. 视觉为声音定位提供了上下文,即使有听力损失,也会影响老年人.
科学领域:
- 眼科医生 眼科 眼科
- 听力学 听力学是指听力学.
- 老年学是指老年学的学科.
背景情况:
- 与年龄相关的黄斑变性 (AMD) 是老年人低视力和中部视力丧失的主要原因.
- AMD经常与听力损失同时发生,使日常功能和感官感知复杂化.
- 空间定位对于导航和社会互动至关重要,受到感官障碍的重大影响.
研究的目的:
- 研究中央视力损失和听力损失对空间定位能力的影响.
- 确定与年龄相关的黄斑变性 (AMD) 如何影响视觉和听觉空间感知.
- 评估老年人的空间定位任务中视觉和听觉之间的相互作用.
主要方法:
- 16名患有AMD的老年人 (有或没有听力损失) 和23名年龄和听力匹配的对照人进行了空间周边测量任务.
- 参与者口头报告了视觉和听觉目标的方向.
- 听力测试是在开眼睛或用眼罩进行的,以评估视觉上下文的影响.
主要成果:
- 中部视力丧失的个体显示视觉目标检测受损,视觉偏差增加,视觉偏差更大.
- 声音局部化没有受到中心视力损失的影响;然而,增加的听力损失与更大的声音局部化变异性相关.
- 在两组人群中,视觉局部化的可靠性在双眼被绑时下降,这表明视觉在听觉空间暗示中的作用.
结论:
- 中央视力丧失显著影响视觉定位,但不会影响声音定位能力.
- 视觉继续提供有价值的上下文线索,有助于声音定位,即使存在听力损失.
- 了解视力和听力损失的综合影响对于解决老年人功能障碍至关重要.
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