人体前额眼场和早期视觉皮层在前性注意力中的可分离作用
Nina M Hanning1,2, Antonio Fernández3,4, Marisa Carrasco3
1Department of Psychology & Center for Neural Sciences, New York University, New York, NY, USA. hanning.nina@gmail.com.
Nature communications
|September 4, 2023
概括
萨卡德前的注意力增强了对萨卡德目标的视觉敏感性. 经磁刺激 (TMS) 显示,正面眼球场 (rFEF+) 因果增强了敏感性,而V1/V2刺激则在冲击开始前就影响了敏感性.
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:
- 沉默前的注意力增强了对沉默目标的视觉敏感性,类似于隐藏的注意力.
- 微刺激表明,前性注意力通过眼运动调节感知到视觉反.
- 在人类中,眼运动和视觉区域都在跳动计划期间活跃.
研究的目的:
- 调查前和视觉区域在前性注意力中的因果作用.
- 为了确定皮层-皮层反机制是否在人类中介于前性注意力.
- 为了区分先前的注意力和隐藏的注意力.
主要方法:
- 跨磁刺激 (TMS) 应用于眼前视野 (rFEF+) 和视觉区域 (V1/V2).
- 在准备过程中同时测量感知表现.
- 刺激对对侧面的前性注意力的效应的比较.
主要成果:
- 在整个saccade准备过程中,rFEF+刺激增强了对侧视觉敏感性.
- V1/V2刺激降低了目标灵敏度,但仅在萨卡德开始前不久.
- 确定了前和视觉区域在前性注意力中的不同作用.
结论:
- 这些发现支持前性注意力通过皮层-皮层反调节感知.
- 这项研究将前性注意力机制与隐藏注意力机制分开.
- 提供了关于rFEF+和V1/V2在前突发性调制中的作用的因果证据.
相关概念视频
Association Areas of the Cortex
5.5K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
5.5K
Motor and Sensory Areas of the Cortex
4.0K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
4.0K
Vision
53.6K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
53.6K
Anatomy of the Eyeball
7.2K
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
7.2K


