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関連する概念動画

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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関連する実験動画

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

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前頭前皮質とは何か?

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
まとめ

人間の前頭前皮質は 大きさや機能がユニークで 複雑な行動を促します 神経科学での使用が増加しているにもかかわらず,種間の構造と役割を明確に定義するためにさらなる研究が必要です.

科学分野:

  • 神経科学
  • 進化生物学
  • 比較解剖学

背景:

  • 前頭前皮質 (PFC) は進化の過程で著しく拡大し,ヒトの最大相対的なサイズ (30%の皮質面積) に達した.
  • この拡張は,ヒトPFCの独特の質的および機能的特性を示唆する,遺伝学的な差異化に関連しています.
  • 現在の神経科学の研究では 複雑な行動における PFCの役割を理解するために マウスをますます活用しています

研究 の 目的:

  • 前頭前皮質の決定的な定義の欠如に対処するために.
  • 異なる種におけるPFCの構造と機能に関する未解決の問題を調査する.
  • 前頭皮質の根本的な性質と機能の理解に重点を置く必要性を強調する.

主な方法:

  • 種間の前頭皮質の進化と大きさの比較分析
  • 前頭皮質の構造と機能に関する既存の文献のレビュー.
  • 前頭皮質の研究におけるマウスモデルの有用性の検討.

主要な成果:

  • 人間の前頭前皮質は不釣り合いな大きさで 系統遺伝学的に異なっています
  • 前頭皮質の決定的な定義と種間理解には大きなギャップがあります.
  • 人間のPFCの機能的および構造的ユニーク性は,依然として活発な調査分野です.

さらに関連する動画

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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関連する実験動画

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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結論:

  • 前頭前皮質は 特に人間には 独特の特性があり 更に深入的な研究が必要です
  • 現在の研究モデルは 価値あるものですが 人間の前頭皮質の複雑さを 完全に捉えることはできません
  • 種間の前頭皮質のより明確で普遍的に受け入れられた定義と 機能的な理解が不可欠です