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相关概念视频

Naturalistic Observations02:30

Naturalistic Observations

If you want to understand how behavior occurs, one of the best ways to gain information is to simply observe the behavior in its natural context. However, people might change their behavior in unexpected ways if they know they are being observed. How do researchers obtain accurate information when people tend to hide their natural behavior? As an example, imagine that your professor asks everyone in your class to raise their hand if they always wash their hands after using the restroom. Chances...
Subliminal Perception01:15

Subliminal Perception

Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
High-Level and Low-Level Awareness01:19

High-Level and Low-Level Awareness

Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
Self-Awareness and Its Effects01:21

Self-Awareness and Its Effects

Self-awareness is a psychological state in which the individual becomes the focal point of their attention. This inward focus transforms the self into an object of contemplation and assessment, influencing how individuals perceive their actions and their alignment with personal and societal standards.Triggers and Contexts for Self-AwarenessSelf-awareness can be activated by external stimuli that make individuals visually or audibly aware of themselves, such as mirrors, cameras, or recordings.
Automatic Processing and Automatic Social Behavior01:28

Automatic Processing and Automatic Social Behavior

Automatic processing refers to the cognitive operations that occur without conscious intent or awareness, playing a fundamental role in shaping social cognition and behavior. These processes enable individuals to navigate complex social environments efficiently by relying on mental shortcuts and pre-existing knowledge structures known as schemas. One of the most influential mechanisms underlying automatic processing is priming, which subtly activates mental representations through exposure to...
Actor-Observer Effect01:23

Actor-Observer Effect

The actor-observer effect, a cognitive bias closely linked to the fundamental attribution error, refers to the tendency for individuals to attribute their behavior to external, situational factors while explaining others’ behavior in terms of internal, dispositional traits. This asymmetry in attribution significantly influences social perception and judgment.Cognitive Mechanisms Behind the EffectTwo primary psychological mechanisms contribute to the actor-observer effect: differences in visual...

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相关实验视频

Updated: Jul 7, 2026

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
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使用局部场潜在的注意状态和行为结果的分离.

Surya S Prakash1, J Patrick Mayo2, Supratim Ray3

  • 1Centre for Neuroscience, Indian Institute of Science, Bangalore 560012, India.

eNeuro
|October 10, 2024
PubMed
概括

V4区域的大脑活动显示了注意力和行为结果的独特模式. 马电源信号注意力,而α电源和稳定状态视觉唤起的潜力表明任务的成功或失败.

关键词:
这是SSVEP的SSVEP.玛 玛 玛 是一个高马辐射的高马辐射.澳门区V4 澳门区V4目标检测 目标检测 目标检测视觉注意力 视觉注意力 视觉注意力

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科学领域:

  • 神经科学是一个神经科学.
  • 认知神经科学 认知神经科学
  • 灵长类动物研究研究

背景情况:

  • 行为成功依赖于注意状态和决策过程.
  • 神经元活动调制因注意状态和行为结果而有所不同.

研究的目的:

  • 调查注意力状态和行为结果是否可以使用局部场势 (LFP) 信号进行区分.
  • 检查LFP功率和阶段在区分注意力和V4区域的结果中的作用.

主要方法:

  • 在视觉注意力任务期间,从 rhesus 子的 V4 区域双边记录了 LFP.
  • 使用的方法用于单试估计尖峰数相关性和相位一致性.
  • 分析了马,高马和α功率,以及稳定状态视觉唤起的潜力 (SSVEPs) 和相位一致性.

主要成果:

  • 注意位置最好通过马和高马功率进行区分.
  • 行为结果 (检测与错误) 最好通过alpha功率和SSVEPs进行歧视.
  • 对于注意力和行为,LFP功率通常比绝对阶段更具歧视性.
  • 单一试验的马相一致性显示出高度的注意力区分能力.

结论:

  • 表明调节注意力焦点的神经机制与决定行为结果的神经机制之间存在分离.
  • 突出不同LFP频段和尺度在视觉注意力和决策中的不同作用.