持续的意识知觉的电生理学相关物
Annika Hense1, Antje Peters2,3, Maximilian Bruchmann2,3
1Institute of Medical Psychology and Systems Neuroscience, University of Münster, Von-Esmarch-Str. 52, 48149, Münster, Germany. annika.hense@uni-muenster.de.
Scientific reports
|May 8, 2024
概括
持续的视觉意识消极性 (SVAN) 与刺激持续时间相关,而不仅仅是发作. 这项研究使用长时间的视觉刺激来显示与意识相关的大脑活动的持续时间与意识感知一样长.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 视觉感知 视觉感知 视觉感知
背景情况:
- 视觉意识消极性 (VAN) 是一种与事件相关的早期潜力,与有意识的视觉感知有关.
- 之前的研究使用了简短的刺激,不确定VAN是否反映了短暂的反应或持续的意识体验.
研究的目的:
- 调查是否意识相关的消极现象在整个刺激呈现过程中持续存在.
- 要区分暂时的发作相关反应和与意识感知持续时间相对应的持续神经活动.
主要方法:
- 采用一种新的视觉刺激设计,具有长时间的刺激持续时间 (500或1000毫秒).
- 使用事件相关潜能 (ERP) 来比较知情 (意识) 和不知情 (不意识) 参与者之间关于隐藏面部刺激的神经活动.
- 在视觉任务期间记录了62名参与者的大脑活动.
主要成果:
- 观察到对皮上电极的增强消极性.
- 这种消极情绪在意识到的参与者中持续了整个刺激呈现的时间.
- 识别了与持续的意识知觉相关的持续视觉意识消极性 (SVAN).
结论:
- 持续的视觉意识消极性 (SVAN) 与意识视觉体验的持续时间有关.
- 研究结果表明,神经相关的意识可以持续,而不仅仅是短暂的.
- 这项研究为与意识相关的神经活动的时间动态提供了关键证据.
相关概念视频
Understanding Consciousness
299
Consciousness can be defined as the state of being aware of and able to think about one's existence, sensations, and surroundings. It encompasses two major components: awareness and arousal. Awareness pertains to the recognition of environmental stimuli and internal states. At the same time, arousal refers to the physiological readiness to engage with these stimuli, which varies significantly between states like sleep and wakefulness.
Sleep, a crucial state, is characterized by reduced...
Sleep, a crucial state, is characterized by reduced...
299
Subliminal Perception
256
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...
256
Subconsciousness and No Awareness
240
The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
240
Perception
450
Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
450


