左および右側側頭葉てんかんにおける静的および動的機能的結合密度の共通点と相違点
Chengru Song1,2, Xiaonan Zhang3, Jingliang Cheng3
1Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China. songchengru@126.com.
Scientific reports
|January 29, 2026
まとめ
左側および右側側頭葉てんかん(LTLEおよびRTLE)では、側頭葉の結合性が低下しています。LTLEは広範な脳の変化を示し、RTLEは後頭葉および小脳に影響を与え、異なるネットワークパターンを明らかにします。
科学分野:
- 神経科学
- てんかん研究
- 脳結合
背景:
- 側頭葉てんかん(TLE)は複雑な神経疾患です。
- 左(LTLE)および右(RTLE)TLEにおけるネットワーク変化の理解は、診断と治療に不可欠です。
- 静的および動的機能的結合密度(FCD)は、脳ネットワーク機能に関する洞察を提供します。
研究 の 目的:
- LTLEおよびRTLE患者と健常対照(HC)の間で、静的および動的FCDを比較すること。
- LTLEおよびRTLE間の異なるネットワーク障害プロファイルを調査すること。
- 認知機能とFCD/dFCDの関係を探求すること。
主な方法:
- 46人のLTLE、43人のRTLE、および53人のHC参加者からT1強調構造画像および安静時機能画像を取得しました。
- スライディングウィンドウアプローチを使用して、静的FCDおよび動的FCD(dFCD)を測定および比較しました。
- シードベースの機能的結合(FC)分析と認知スコアとの相関。
主要な成果:
- 両方のLTLEおよびRTLEで、HCと比較して同側側頭葉の静的FCDが低下していました。
- LTLEでは対側側頭葉のFCDが減少し、RTLEでは左後頭葉のFCD/dFCDが増加し、左小脳のdFCDが減少しました。
- FC分析により、LTLEではより多くの異常領域が明らかになり、RTLEでは左後頭葉のFCが特異的に減少しました。
結論:
- TLEは、側性化されたネットワーク表現型を持つシステムレベルの障害です。
- LTLEは、RTLEよりも両側性および広範なネットワーク変化を示します。
- 静的および動的FCDを統合することで、TLEの全脳ネットワーク異常の包括的なビューが得られます。
関連する概念動画
Functions of Connective Tissues
16.6K
Connective tissues perform a broad range of functions in the body. Their primary function is to connect and link different tissues in the body and act as packaging material between tissues. The areolar tissue, a connective tissue prototype, commonly cements various tissue types in diverse body organs. In contrast, adipose tissue cushions internal organs while insulating the body from heat loss.
Hard connective tissues, such as bones and cartilage, provide structure and support to the body.
Hard connective tissues, such as bones and cartilage, provide structure and support to the body.
16.6K
Static, Stagnation, Dynamic and Total Pressure
1.5K
The concept of static, stagnation, dynamic, and total pressure is fundamental in fluid dynamics, often explained using Bernoulli's equation:
1.5K
Common Ion Effect
46.6K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
46.6K
Applications of Integration to Probability Density Functions
54
Continuous probability distributions are used to model random variables that can take on any real value within a specified range. These variables do not take on isolated or countable values but rather exist on a continuum. For example, the height of an individual can be measured with increasing precision—such as 163.5 or 165.25 centimeters—demonstrating that height is a continuous random variable.The behavior of such variables is described using a probability density function (PDF),...
54
Lobes of the Cerebrum
4.7K
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....
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements....
4.7K
Static Equilibrium - I
18.9K
A rigid body is said to be in dynamic equilibrium when both its linear and angular acceleration are zero, relative to an inertial frame of reference. This means that a body in equilibrium can be moving, but only when its linear and angular velocities are constant. A rigid body is said to be in static equilibrium when it is at rest in the selected frame of reference. The distinction between static equilibrium (e.g., a state of rest) and dynamic equilibrium (e.g, a state of uniform motion) is...
18.9K


