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相关概念视频

Association Areas of the Cortex01:21

Association Areas of the Cortex

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,...
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

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.
Vision01:24

Vision

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.
Parallel Processing01:20

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...

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相关实验视频

Updated: Jun 22, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

在注意力过程中,前额叶和视觉皮层之间的高频,远程合.

Georgia G Gregoriou1, Stephen J Gotts, Huihui Zhou

  • 1McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Science (New York, N.Y.)
|May 30, 2009
PubMed
概括

注意力通过加强视觉和额头区域之间的同步脑电波来增强大脑交流. 这种同步活动,特别是在马频率,由前视野 (FEF) 启动,并在集中注意力时改善信息流动.

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
  • 视觉处理 视觉处理

背景情况:

  • 在腹部流视觉区域观察到神经反应和马同步的注意力增强.
  • 这种同步的起源,无论是内在的还是输入驱动的,仍然不清楚.

研究的目的:

  • 调查区域间通信在与注意力相关的马同步中的作用.
  • 为了确定前视野 (FEF) 在注意力时是否影响视觉区域V4的同步.

主要方法:

  • 在子的FEF和V4区域进行了配对电生理记录.
  • 分析的重点在于在执行任务时,这两个区域之间的振荡合和同步.

主要成果:

  • 关注FEF和V4联合受体场内的刺激,增强了这些区域之间的振荡合,特别是在马频率上.
  • 这种增强合是由FEF启动的,显示时间延迟为8-13毫秒.
  • 这些发现表明FEF对V4的方向影响.

结论:

  • FEF和V4之间的注意力驱动的马同步是由增强的振荡合介导的.
  • 在V4的FEF输入,在马频率的时间转移,可能优化跨区域通信,以改善注意力期间的视觉处理.

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Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

相关实验视频

Last Updated: Jun 22, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012