在视觉搜索中对特定类别注意力模板的预激活动态
Jiahui Su1,2, Xin Ling1,2, Zhiwei Miao3,4
1Key Research Base of Humanities and Social Sciences of the Ministry of Education, Academy of Psychology and Behavior, Tianjin Normal University, Tianjin 300387, China.
Behavioral sciences (Basel, Switzerland)
|December 30, 2025
概括
特定类别的注意力模板 (CATs) 指导视觉搜索. 语义CAT首先预激活,其次是基于原型和基于策略的CAT,揭示了视觉注意力的独特激活模式.
科学领域:
- 认知心理学 认知心理学
- 神经科学是一个神经科学.
- 视觉注意力 视觉注意力
背景情况:
- 特定类别的注意力模板 (CATs) 便于视觉搜索.
- 之前对CAT预激活的研究面临着任务难度和维度平衡的挑战.
- 了解CAT预激活的时间动态对于视觉搜索研究至关重要.
研究的目的:
- 在不同类别框架中调查CAT预激活的时间进程.
- 检查类型类型 (语义,原型,策略) 对CAT激活时间的影响.
- 通过平衡目标尺寸和任务难度来解决先前研究的局限性.
主要方法:
- 使用快速串行视觉演示范式 (RSPP) 进行识别任务.
- 基于语义 (花园,海洋),原型 (温暖,凉爽) 和战略 (红蓝,黄色绿) 类别的定义目标.
- 使用事件相关潜力 (ERP) 和探头引起的N2pcs测量了CAT预激活的时间进程.
- 使用多变量模式分析 (MVPA) 进行进一步分析.
主要成果:
- 基于语义的CAT显示了最早的预激活 (在目标开始前约1200毫秒).
- 接下来,基于原型的CATs被预先激活 (在目标发作之前约900毫秒).
- 基于策略的CAT显示了最新的预激活 (在目标开始前约600毫秒).
结论:
- 不同的类别框架对CAT表现出不同的时间激活模式.
- 语义类别依赖于经验和学习,在预先激活时优先考虑.
- 研究结果澄清了CAT预激活的时间进程,支持视觉注意的模型.
更多相关视频
相关概念视频
Force Classification
Forces play a crucial role in the study of physics and engineering. They are essential in describing the motion, behavior, and equilibrium of objects in the physical world. Forces can be classified based on their origin, type, and direction of action.
Contact and non-contact forces are two of the most widely used categories of forces. As the name suggests, contact forces require physical contact between two objects to act upon each other. Examples of contact forces include frictional,...
Contact and non-contact forces are two of the most widely used categories of forces. As the name suggests, contact forces require physical contact between two objects to act upon each other. Examples of contact forces include frictional,...
Sensory Modalities
Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
Reflex Activity
A reflex activity is an automatic, involuntary response to specific stimuli. It is a part of our survival mechanism, designed to protect us from potential harm. For example, when a bright light suddenly shines into our eyes, we instinctively close them or look away. This is a simple reflex activity orchestrated by the nervous system without conscious thought or effort.
A reflex exam is a diagnostic procedure performed by a healthcare professional to evaluate the functionality of a patient's...
A reflex exam is a diagnostic procedure performed by a healthcare professional to evaluate the functionality of a patient's...
Focusing of Light in the Eye
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Photoreceptors and Visual Pathways
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
Active Filters
Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:


