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相关概念视频

Lobes of the Cerebrum01:22

Lobes of the Cerebrum

4.9K
The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements....
4.9K
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

1.3K
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
1.3K
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

8.0K
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....
8.0K
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

2.8K
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
2.8K
Cerebrum: Anatomical Overview I01:26

Cerebrum: Anatomical Overview I

5.7K
The main and largest component of the human brain is the cerebrum. The cerebrum consists of two main parts: the cerebral cortex, an outer layer with wrinkles or folds known as gyri and shallow grooves called sulci, and a deeper region beneath it. The cerebrum divides into two distinct hemispheres and contains five different lobes: the frontal, parietal, temporal, occipital, and insula. The central sulcus separates the frontal and parietal lobes and two functionally important gyri — the...
5.7K
Association Areas of the Cortex01:21

Association Areas of the Cortex

9.7K
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,...
9.7K

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相关实验视频

Updated: Feb 20, 2026

Conducting Concurrent Electroencephalography and Functional Near-Infrared Spectroscopy Recordings with a Flanker Task
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Conducting Concurrent Electroencephalography and Functional Near-Infrared Spectroscopy Recordings with a Flanker Task

Published on: May 24, 2020

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什么是前额叶皮层?

Marie Carlén1

  • 1Department of Neuroscience, Karolinska Institutet, 171 77 Stockholm, Sweden, and Department of Biosciences and Nutrition, Karolinska Institutet, Novum, 141 83 Huddinge, Sweden. marie.carlen@ki.se.

Science (New York, N.Y.)
|October 28, 2017
PubMed
概括

人的前额叶皮质在尺寸和功能上是独一无二的, 尽管在神经科学中越来越多地使用它,但仍需要进一步的研究来确定它在物种中的结构和作用.

科学领域:

  • 神经科学
  • 进化生物学
  • 比较解剖学

背景情况:

  • 前额叶皮层 (PFC) 在进化过程中显著扩大,在人类中达到最大的相对尺寸 (30%的皮层面积).
  • 这种扩张与遗传学差异化有关,表明人类PFC具有独特的质量和功能性质.
  • 目前的神经科学研究越来越多地利用小鼠研究PFC,旨在了解它在复杂行为中的作用.

研究的目的:

  • 解决前额叶皮层缺乏明确定义的问题.
  • 调查不同物种中PFC的结构和功能的未解决问题.
  • 强调需要重新关注前额叶皮层的基本性质和功能.

主要方法:

  • 对物种前额叶皮层的演变和大小进行比较分析.
  • 对前额叶皮层结构和功能的现有文献进行审查.
  • 对前额皮层研究中小鼠模型的实用性进行检查.

主要成果:

  • 人的前额叶皮质是不成比例的大,
  • 在前额叶皮层的确切定义和跨物种理解方面存在重大差距.
  • 人类PFC的功能和结构独特性仍然是一个活跃的研究领域.

更多相关视频

Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex
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Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex

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Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis
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Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis

Published on: June 20, 2012

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相关实验视频

Last Updated: Feb 20, 2026

Conducting Concurrent Electroencephalography and Functional Near-Infrared Spectroscopy Recordings with a Flanker Task
13:18

Conducting Concurrent Electroencephalography and Functional Near-Infrared Spectroscopy Recordings with a Flanker Task

Published on: May 24, 2020

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Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex
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Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex

Published on: April 15, 2015

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Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis
10:33

Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis

Published on: June 20, 2012

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结论:

  • 尤其是人类前额叶皮质, 具有独特的特征, 需要进一步深入研究.
  • 目前的研究模型虽然有价值,但可能无法完全理解人类前额叶皮层的复杂性.
  • 一个更清晰,普遍接受的定义和对前额叶皮层跨物种的功能理解是非常必要的.