鳩の玄関内核への短時間潜伏の迷宮的な入力

V J Wilson, R M Wylie

Science (New York, N.Y.)

|April 3, 1970

まとめ

鳩の迷宮の電気刺激は,前庭神経細胞の急速な反応を明らかにし,ユニークな神経伝達経路を示唆しています. この研究は,鳩と猫の迷宮-玄関内接続の違いを強調しています.

科学分野:

神経科学は神経科学である.
ベスティブラー系の研究
比較神経解剖学について

背景:

バランスと空間的指向に不可欠な前庭系は,複雑な神経回路に依存しています.
玄関内核の接続を理解することは,感覚処理の解読の鍵です.

研究の目的:

鳩の迷宮の電気刺激によって活性化される神経経路を調査する.
鳥のベスティブル系接続性を哺乳類,特に猫のベスティブル系接続性と比較する.

主な方法:

鳩の迷宮に電気刺激を施した.
2次ベスティブルニューロンの応答を記録し,遅延期を分析した.

主要な成果:

モノシナプス遅延よりも早い早期のニューロン応答は,迷宮刺激後の鳩の вестиブルニューロンで観察されました.
これらの急速な反応は,電気的に媒介されたシナプス伝達またはエフェルント繊維経由の反ドロミック侵入を示唆しています.

結論:

鳩は,猫と比較して,明確な迷宮 - 玄関神経接続を示しています.
この発見は,前立体系の比較神経解剖学についての洞察を提供します.

さらに関連する動画

04:03

Surgical Labyrinthectomy of the Rat to Study the Vestibular System

Published on: May 19, 2018

06:12

Long-term Sensory Conflict in Freely Behaving Mice

Published on: February 20, 2019

関連する概念動画

01:29

The Vestibular System

The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.

01:27

Diencephalon: Thalamus and Information Relay

The thalamus, often called “the gateway to the cerebral cortex,” is vital in processing and directing sensory and motor signals throughout the brain. Almost all inputs destined for the cerebral cortex, except for olfactory signals, are relayed through the thalamus. The thalamus is a sophisticated relay station, channeling information from various brain regions to the cerebral cortex, as well as a filter, prioritizing certain signals over others based on current physiological states or needs.

01:19

Brainstem

The brainstem, located inferior to the brain and superior to the spinal cord, serves as a bridge between the cerebrum and the spinal cord. It plays a vital role in relaying information and controlling critical life functions. It comprises three primary regions: the midbrain, pons, and medulla oblongata.
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...

01:28

Major Somatic Sensory Pathways

Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the posterior columns...

01:22

Indirect Motor Pathways

The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...

01:15

Equilibrium and Balance

The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...

関連する実験動画