関連する実験動画
Updated: May 2, 2026

08:25
Measuring Attentional Biases for Threat in Children and Adults
Published on: October 19, 2014
17.3K
無意識の恐怖は,安全な文脈で視界を歪めるための注意を必要とします
Xiqian Wu1,2, Xilei Zhang3,4, Liang Wang1,2
1State Key Laboratory of Cognitive Science and Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, 100101, China.
Neuroscience bulletin
|February 19, 2026
まとめ
無意識の恐怖記憶は,安全な環境でも,無意識に視覚処理をバイアスすることができます. 広範なアルファ振動によって媒介される上から下への注意は,この効果をゲートし,刺激に注意を払わないときにそれを抑制します.
科学分野:
- 神経科学は神経科学である.
- 認知心理学とは,認知心理学である.
- 精神科医は精神病を患っている.
背景:
- 不安障害は,同様のストレス被曝にもかかわらず,不一致に発展します.
- 無意識の恐怖記憶を安全な文脈に一般化させることが,潜在的なメカニズムである.
- これらの無意識の恐怖反応を調節する注意の役割は十分に理解されていません.
研究 の 目的:
- 無意識の恐怖記憶が安全な文脈で視覚処理をバイアスしているかどうかを調査する.
- 注意に基づくコントロールがこれらの無意識のバイアスを抑制するかどうかを判断する.
- 恐怖の一般化と注意のゲーティングの神経関連性を探求する.
主な方法:
- 参加者は,潜在的に提示された脅威に関連した刺激で視覚的差別タスクを完了しました.
- 刺激は,CFF (Critical Flicker-Fusion Frequency) 以上の速い染色点滅を用いて目に見えないものにされました.
- 電気脳波 (EEG) は,アルファ振動に焦点を当てて脳活動を記録しました.
主要な成果:
- EEGは,治療を受けた状態において,有意な無意識の恐怖反応 (CS+ vs. CS-) を示した.
- これらの恐怖反応は,幅広いアルファパワーと正に相関しており,注意調節を示しています.
- アルファパワーの上昇にもかかわらず,監視されていない刺激に対して有意な恐怖反応は観察されなかった.
結論:
- 無意識の恐怖記憶は,安全な文脈での一般化中に視覚処理を歪めることができます.
- 上から下への注意は,ゲートとして機能し,参加された刺激を優先し,未参加の刺激を抑制します.
- 幅広いアルファ振動は,無意識の恐怖の一般化の注意のゲートに決定的な役割を果たします.
関連する概念動画
Schemas
10.8K
A schema is a mental construct consisting of a cluster or collection of related concepts (Bartlett, 1932). There are many different types of schemata, and they all have one thing in common: schemata are a method of organizing information that allows the brain to work more efficiently. When a schema is activated, the brain makes immediate assumptions about the person or object being observed.
10.8K
Accessory Structures of the Eye
4.3K
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
4.3K
Photoreceptors and Visual Pathways
8.5K
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,...
8.5K
Depth Perception and Spatial Vision
2.7K
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
2.7K
Color Vision
2.0K
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
2.0K
Preparedness and Phobias
476
Human fear responses to certain stimuli, such as darkness, heights, deep water, and blood, can often arise despite the absence of direct negative experiences. This phenomenon is rooted in evolutionary psychology, which posits that humans have developed a predisposition to fear stimuli that historically posed significant survival threats. This predisposition, known as preparedness, suggests that early humans who developed a fear of potentially dangerous entities, such as venomous snakes and...
476

