Semicircular Canals
Semicircular Canals - Related Videos
08:38
Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
0 Views •
Cited by 26 •
2019
This protocol describes how to correctly perform the video head impulse test with two separate test systems commonly used worldwide. Both the 2D and 3D video head impulse test methods are described.
03:52
Posterior Semicircular Canal Approach for Inner Ear Gene Delivery in Neonatal Mouse
0 Views •
Cited by 37 •
2018
In this study, we describe the posterior semicircular canal approach as a reliable method for inner ear gene delivery in neonatal mice. We show that gene delivery through the posterior semicircular canal is able to perfuse the entire inner ear.
06:26
Capturing Flow-weighted Water and Suspended Particulates from Agricultural Canals During Drainage Events
0 Views •
Cited by 2 •
2017
Nutrients present in particulate form can contribute significantly to the overall loads in agricultural drainage waters. This study describes a novel method to capture flow-weighted water and suspended particulates from farm canal drainage over the entire duration of the drainage event.
10:30
The C. elegans Excretory Canal as a Model for Intracellular Lumen Morphogenesis and In Vivo Polarized Membrane Biogenesis in a Single Cell: labeling by GFP-fusions, RNAi Interaction Screen and Imaging
0 Views •
Cited by 6 •
2017
The C. elegans excretory canal is a unique single-cell model for the visual in vivo analysis of de novo polarized membrane biogenesis. This protocol describes a combination of standard genetic/RNAi and imaging approaches, adaptable for the identification and characterization of molecules directing unicellular tubulogenesis, and apical membrane and lumen biogenesis.
04:36
Canalostomy for Local Drug Delivery into the Inner Ear of an Adult Mouse
0 Views •
2025
This video showcases canalostomy, a procedure that allows local drug delivery into the inner ear of a mouse through the semicircular canal with minimal damage to hearing and vestibular function. This method enables the inoculation of viral vectors, pharmaceuticals, and small molecules into the mouse's inner ear.
FAQs
The key mechanical step is relative motion between the canal wall and its endolymph. During head rotation, the fluid lags because of inertia, deflecting the hair cells in a crista ampullaris. That deflection changes the cells’ electrical signals, allowing rotational movement to be represented for processing by the nervous system.
Their roughly right-angle arrangement allows the vestibular system to sample rotation across different spatial planes rather than along one direction only. As a result, movement of the head can produce distinctive patterns of activity among the canals. The brain can use these combined signals to support spatial orientation and coordinate balance-related responses.
Signals generated during head rotation are integrated with visual information to help stabilize vision. This processing supports the vestibulo-ocular reflex, which coordinates eye responses with head movement so visual information remains more stable while the head changes position. Disruption of this coordination can contribute to dizziness, impaired coordination, or difficulty maintaining visual stability.
No single sensory source provides the complete picture of body movement and orientation. By comparing canal signals with visual input and information from other balance organs, the brain can coordinate posture and interpret movement more effectively. This integration helps explain why vestibular problems may affect balance, spatial orientation, vision stability, and coordination together.
Studying these structures links a physical event, such as rotational head movement, to fluid displacement, hair-cell deflection, altered electrical signaling, and coordinated behavior. This chain helps researchers examine how the vestibular system supports balance and orientation. It also provides a framework for understanding what changes when normal signaling becomes disrupted.
Because these canals contribute to detecting rotation and maintaining stable orientation, abnormal function can be examined in relation to vertigo, dizziness, and impaired coordination. Their study helps connect symptoms with failures in sensing movement or integrating vestibular signals with vision and other balance information. This makes them important for understanding vestibular disorders in a biological context.