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関連する概念動画

Patch Clamp01:18

Patch Clamp

Many fundamental cell functions such as muscle contraction and nerve transmission rely on the electrical signals produced by the movement of positively and negatively charged ions across the cell membrane. One competent method to record current flowing across the whole cell or single ion channel is the patch-clamp technique.
In this method, a glass micropipette containing electrolyte solution is tightly sealed against a small portion of the cell membrane. As a result, a patch of the cell...
Propagation of Action Potentials01:23

Propagation of Action Potentials

The propagation of an action potential refers to the process by which a nerve impulse, or "action potential," travels along a neuron.
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
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.
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,...
Cerebellum: Anatomical Regions01:17

Cerebellum: Anatomical Regions

The cerebellum, also known as the "little brain," is located in the posterior cranial fossa, inferior to the tentorium cerebelli and dorsal to the brainstem. It plays a significant role in motor control, coordination, and proprioception.
Cerebellar Structure
Externally, the cerebellum features a highly convoluted surface with numerous folia (narrow ridges) separated by shallow sulci (grooves). The cerebellum is divided into two hemispheres by a thin median structure known as the vermis. The...
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

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 the...

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関連する実験動画

Updated: May 12, 2026

Visualization of Cortical Modules in Flattened Mammalian Cortices
08:49

Visualization of Cortical Modules in Flattened Mammalian Cortices

Published on: January 22, 2018

皮質のパッチが動いている.

Defne Yarar1

  • 1Department of Cell Biology, The Scripps Research Institute, La Jolla, Califonia 92037, USA.

Cell
|November 19, 2003
PubMed
まとめ

研究者らは,リアルタイム顕微鏡を用いて,酵母細胞の内分細胞変異 (endocytosis) 中の分子イベントの正確なタイミングを明らかにした. この研究は,アクチン細胞骨格が細胞の吸収のための内細胞機構とどのように調整されるかを明らかにしています.

科学分野:

  • 細胞生物学 細胞生物学
  • 分子生物学と細胞生物学について

背景:

  • エンドサイトーシスは,真核細胞が外部物質を内部化する主な経路である.
  • エンドサイトーシスを駆動する分子イベントの正確な時間的なシーケンスが完全に理解されていません.
  • 細胞内機械の組立ダイナミクスの知識は,細胞のプロセスを理解するために不可欠です.

研究 の 目的:

  • 酵母菌 (Saccharomyces cerevisiae) の内細胞機構のタイムラルアセンブリを定義する.
  • アクチン細胞骨格と内細胞成分との連携を調査する.
  • エンドサイトーシスの分子メカニズムを理解するための時間的枠組みを提供すること.

主な方法:

  • ダイナミックな分子イベントを視覚化するために,リアルタイム生細胞顕微鏡を用いた.
  • イーストのモデル生物であるSaccharomyces cerevisiaeで研究が行われました.
  • 時間の経過におけるタンパク質の局所化と動態の定量分析.

主要な成果:

  • 鍵となる内細胞タンパク質の募集の時間順序を詳細に説明しました.
  • アクチン細胞骨格のダイナミクスによる内細胞機構の協調的な組み立てを実証した.
  • 臨界内細胞的イベントのための特定の時間窓を特定しました.

さらに関連する動画

Electrophysiology of Laminar Cortical Activity in the Common Marmoset
07:37

Electrophysiology of Laminar Cortical Activity in the Common Marmoset

Published on: August 4, 2023

Multiscale Investigations of Cortical Processing by Integrating Laminar Polytrodes and Optogenetics with Micro Electrocorticography in Rodents
07:52

Multiscale Investigations of Cortical Processing by Integrating Laminar Polytrodes and Optogenetics with Micro Electrocorticography in Rodents

Published on: May 23, 2025

関連する実験動画

Last Updated: May 12, 2026

Visualization of Cortical Modules in Flattened Mammalian Cortices
08:49

Visualization of Cortical Modules in Flattened Mammalian Cortices

Published on: January 22, 2018

Electrophysiology of Laminar Cortical Activity in the Common Marmoset
07:37

Electrophysiology of Laminar Cortical Activity in the Common Marmoset

Published on: August 4, 2023

Multiscale Investigations of Cortical Processing by Integrating Laminar Polytrodes and Optogenetics with Micro Electrocorticography in Rodents
07:52

Multiscale Investigations of Cortical Processing by Integrating Laminar Polytrodes and Optogenetics with Micro Electrocorticography in Rodents

Published on: May 23, 2025

結論:

  • この研究は,内細胞機械の組み立ての高解像度タイムマップを提供します.
  • 発見は,アクチン細胞骨格による内分細胞の空間時間的調節に関する新しい洞察を明らかにします.
  • この研究は,タイミングが腸内細胞機能にどのように影響するかを理解するための基礎を築いています.