関連する実験動画

Updated: Jan 29, 2026

Assessment of Sexual Behavior of Male Mice

Assessment of Sexual Behavior of Male Mice

Published on: March 5, 2020

リンビックニューロンは性的に素朴な男性における性認識と社会的行動に形を与える

Daniel W Bayless¹, Taehong Yang¹, Matthew M Mason¹

¹Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA.

|February 5, 2019

まとめ

オスマウスのストリア・ターミナリス (BNSTpr) のベッド核にあるアロマターゼ発現神経細胞は,他者の性別をコードし,交尾などの社会的行動を導く. これらのニューロンを静止すると性別認識と交尾の成功が妨げられます

科学分野:

神経科学
行動生物学
内分泌学

背景:

性別を区別することは,性的に素朴な動物における種特有の社会的相互作用にとって極めて重要です.
素朴な哺乳類の性認識を制御する中央神経経路はよく理解されていません.

研究の目的:

ネズミの社会的相互作用と性認識におけるストリア・ターミナリスのベッド核 (BNSTpr) の主要な構成要素の役割を調査する.
アロマターゼを発現する BNSTpr (AB) ニューロンが性別をコードし,社会的行動を調節することに関与しているかどうかを判断する.

主な方法:

性的無意識のマウスで,アロマターゼ発現するBNSTpr (AB) ニューロンの活動を研究した.
フェロモンの好み,交尾行動,社会的反応への影響を評価するためにニューロンの静止と活性化技術を活用した.

主要な成果:

男性のABニューロンの活動は他の動物の性別をコードし,その後の交尾行動に影響します.
男性のABニューロンを静止させることで女性のフェロモンの好みと交尾の成功がなくなりました
男性のABニューロンの一時的な活性化により男性と男性の交尾行動が誘発された.
女性ABニューロンは,性別認識,交配,または母性攻撃において重要な役割を果たすようには見えなかった.

結論:

BNSTprのABニューロンは性別認識と性的に素朴なマウスの社会的行動を制御するのに不可欠です
これらの発見は性別認識に基づく生まれつきの社会的反応に不可欠な特定の神経回路を強調しています

キーワード:

攻撃性アロマターゼストリア・ターミナルの床核感情的な行動ジェンダー認識生まれつきの行動交尾する性行為性二型化社会的行動

さらに関連する動画

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates

Published on: January 27, 2019

Behavioral Tasks for Examining Identity Recognition In Mice

Behavioral Tasks for Examining Identity Recognition In Mice

Published on: February 7, 2025

関連する概念動画

Male Sexual Response: Erection & Ejaculation

Male Sexual Response: Erection & Ejaculation

Sexual stimulation can take various forms, such as physical touch and visual or auditory cues. When this happens, the parasympathetic reflex in the sacral portion of the spinal cord is activated. This reflex stimulates the release of nitric oxide (NO), which then dilates the arterioles in the penis, increasing blood flow to the erectile tissues - the corpora cavernosa and corpus spongiosum.
The blood filling the erectile tissues compresses the veins, which helps to prevent blood from leaving...

Social Psychology and Individual Behavior

Social Psychology and Individual Behavior

Social psychology examines how group dynamics, emotions, and cultural influences shape individual actions and decision-making. These elements interact to form behavioral patterns that affect personal choices and social interactions.The Role of Group DynamicsGroups play a crucial role in shaping behavior by reinforcing norms and expectations. Individuals derive a sense of self from group membership, often aligning their behaviors with group norms to maintain social cohesion. For example, an...

Causes of Social Behavior II: Cognitive Processes

Causes of Social Behavior II: Cognitive Processes

Cognitive processes affect social behavior by guiding how individuals perceive, interpret, and respond to social stimuli. These mental processes enable individuals to assess others' behaviors, attribute causes to their actions, and form expectations based on past experiences.Causes of Behavior and Social JudgmentsIndividuals determine the causes of others' behaviors by distinguishing between personal traits and external circumstances. For example, if a friend frequently arrives late, an...

Social Proof

Social proof is a form of persuasion based on comparison and conformity. People compare their behavior and actions to what others are doing and will change to conform to do what their peers do.

Social Scripts

People tend to know what behavior is expected of them in specific, familiar settings. A script is a person’s knowledge about the sequence of events expected in a specific setting (Schank & Abelson, 1977). Essentially, scripts are a particular kind of schema, one containing default values for the features within an event. In the restaurant example, the script's features include the props (e.g., tables, menu, food, and money), the roles to be played (e.g., customer and waiter),...

Causes of Social Behavior I: Actions and Characteristics of Individuals

Causes of Social Behavior I: Actions and Characteristics of Individuals

The actions and characteristics of others heavily influence the causes of social behaviors. Emotional expressions serve as powerful social signals, shaping behaviors and interactions in significant ways. Whether through direct observation or subconscious processing, individuals constantly adjust their responses based on the emotions and attributes of those around them.Emotional Cues and Social ResponsesFacial expressions, tone of voice, and body language provide crucial emotional cues that...