相关实验视频

Updated: Jun 18, 2025

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects

Published on: September 18, 2012

在街区中间的人行道上进行视线扫描,行人有同名的半视眼,有或没有空间疏忽

Shrinivas Pundlik¹, Matteo Tomasi¹, Kevin E Houston¹

¹Schepens Eye Research Institute of Mass Eye & Ear, Harvard Medical School, Department of Ophthalmology, Boston, Massachusetts, United States.

Investigative ophthalmology & visual science

|July 30, 2024

概括

患有同名眼视障碍 (HH) 的行人在行走时,目光越来越多地扫描着他们的盲人侧面. 空间疏忽 (SN) 损害了这种补偿性凝视行为,这表明涉及到一个自上而下的过程.

科学领域:

神经科学是一个神经科学.
眼科医生眼科眼科
人类因素人类因素

背景情况:

同名视力缺陷 (HH) 是由脑损伤引起的视野缺陷.
患有HH的人通常由于视觉处理受损而难以在环境中导航.
了解HH患者的目光行为对于开发有效的康复策略至关重要.

研究的目的:

在行走时调查同名半视眼 (HH) 的行人视线扫描模式.
为了比较右HH (RHH),左HH (LHH) 和空间疏忽的LHH (LHSN) 个体之间的凝视行为.
分析在街区中行走和街道交叉路口时眼神扫描的差异.

主要方法:

在城市行走期间,LHH,RHH和LHSN的行人使用了视线跟踪.
通过结合头部和眼睛运动来收集视线数据.
混合效应回归模型分析了水平视线扫描大小和相对于视野缺陷的比率.

主要成果:

无论是LHH还是RHH的参与者都表现出明显更高的凝视幅度和扫描率,与他们的视觉侧面相比,他们对盲人侧面的扫描率更高.
LHSN参与者在两侧的目光扫描中没有显著差异.
与所有群体的街道过道相比,在街区中行走时,目光扫描率和幅度明显较低.

结论:

在HH中,补偿性凝视扫描似乎是由主动的,自上而下的机制驱动的.
空间疏忽 (SN) 的存在会对这种自上而下的视线控制过程产生负面影响.
这些发现突出了HH患者在移动期间使用的复杂视觉和认知策略.

更多相关视频

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Published on: July 21, 2020

相关概念视频

Prosopagnosia

Prosopagnosia

Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...

Visual Agnosia

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...