Visual Stimulus Competition
试验速览
- 阶段
- 不适用
- 入组人数
- 10
- 试验地点
- 2
- 主要终点
- Detection probability
研究概览
简要总结
In this study, we will use behavioral methods to investigate several types of interactions that occur when visual stimuli conflict, such as when objects are presented nearby to each other, or to separate eyes. We will target purely sensory aspects by using simple geometric shapes: letters and lines. Our outcome measure will be performance thresholds.
详细描述
Participants will be shown visual stimuli on displays and be asked to identify some aspect of the stimuli: their orientation and/or color, the existence of binocular suppression, etc.
In different blocks, stimuli will be manipulated in different ways to characterize basic aspects of visual processing. For example, the contrast, color, and/or spatial layout of stimuli will be varied.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Normal Vision
- •English language
排除标准
- •Less than 20/20 in either eye
- •Vision-affecting abnormalities (amblyopia, keratoconus, etc.)
- •Ortho-K lenses
研究组 & 干预措施
Single Arm
干预措施: Item spacing (Behavioral)
结局指标
主要结局
Detection probability
时间窗: 2 hours
Ability to detect a target stimulus as a function of flanker proximity
次要结局
未报告次要终点
研究者
Daniel R. Coates
Assistant Professor
University of Houston