Nice explanation. Only thing I'd add is that the corrective saccade is not merely because the VOR has turned the eye to end of eye orbit. You can think of it as the rapid rising of the head when you are falling asleep, "nodding off" while sitting. The pathologic part is the slow part where your head is drifting down, and the corrective part is the fast rising movement.
@@meq8830 I believe you're asking what the purpose of the VOR is. Without it, we would not be able to have stable vision while moving our head. It's our brain's image stabilization software if you will.
Thank you for the well defined explanation regarding nystagmus. I would like to ask regarding caloric testing, in which warm or cold water is inserted through the ear canal. I agree that when warm water is placed on the right ear, it will cause a counterclockwise movement of the right endolymph in the horizontal semi-circular canal. This will then activate the hair cells through the kinocillium and give impulses as if the head moves to the right. Hence, a VOR to the left direction will be produced which means that nystagmus should be on the contralateral side or to the left instead of the ipsilateral side. The same goes for insertion of cold water to the right ear canal, which should be ipsilateral. Hence, the mnemonic produced is: cold same - warm opposite. This is my insight regarding nystagmus, kindly correct if there are any wrong concepts or way of thinking that I have just made. I await a reply to this comment very much. Once again, thank you.
No, your explanation has errors. Warm water in right ear -> counterclockwise movement of the right endolymph in the horizontal semi-circular canal which is toward the cupula (ampullopetal which is excitatory for the horizontal canals) -> your brain thinks you are moving to the right -> VOR generates the SLOW phase to the left -> the corrective phase (fast) is to the right. Nystagmus is named for the fast phase. Thus, warm water in the right ear generates nystagmus to the right. Cold water in the right ear generates nystagmus to the left. COWS = cold opposite, warm same
Thank you so much for explaining the “WHY” 😅 💐
PERFECT!! Thank you! Everywhere explanations about classifications etc...but no one explaining WHY it happens.
omg the first time i could understand the nystagmus
thank you so much for your help, science, hard work, generosity, and kindness May GOD reward you
Nice explanation. Only thing I'd add is that the corrective saccade is not merely because the VOR has turned the eye to end of eye orbit. You can think of it as the rapid rising of the head when you are falling asleep, "nodding off" while sitting. The pathologic part is the slow part where your head is drifting down, and the corrective part is the fast rising movement.
May I ask sth? I've got confused over this. so why body starts vor when it thinks it is just sth that must be "corrected" when happens?
@@meq8830 I believe you're asking what the purpose of the VOR is. Without it, we would not be able to have stable vision while moving our head. It's our brain's image stabilization software if you will.
Literally the best explanation out there!!
Thank you so much
Can't agree more
Explained with amazing simplicity . Thanks
You are the best!
Fantastic vid series!
Thank you so much for this explanation. Very concise!
Thank you for the well defined explanation regarding nystagmus. I would like to ask regarding caloric testing, in which warm or cold water is inserted through the ear canal. I agree that when warm water is placed on the right ear, it will cause a counterclockwise movement of the right endolymph in the horizontal semi-circular canal. This will then activate the hair cells through the kinocillium and give impulses as if the head moves to the right. Hence, a VOR to the left direction will be produced which means that nystagmus should be on the contralateral side or to the left instead of the ipsilateral side. The same goes for insertion of cold water to the right ear canal, which should be ipsilateral. Hence, the mnemonic produced is: cold same - warm opposite.
This is my insight regarding nystagmus, kindly correct if there are any wrong concepts or way of thinking that I have just made. I await a reply to this comment very much. Once again, thank you.
No, your explanation has errors. Warm water in right ear -> counterclockwise movement of the right endolymph in the horizontal semi-circular canal which is toward the cupula (ampullopetal which is excitatory for the horizontal canals) -> your brain thinks you are moving to the right -> VOR generates the SLOW phase to the left -> the corrective phase (fast) is to the right. Nystagmus is named for the fast phase. Thus, warm water in the right ear generates nystagmus to the right. Cold water in the right ear generates nystagmus to the left. COWS = cold opposite, warm same
What is vor and saccade
Thank u!
Thank you ❤❤❤
best explanation out there. thank u madam 😊
Thank you. Great explanation
Can Nystagmus person able to do medical course ? please tell me sir
Nice explanation. Thanks doctor...
So clear, madam
Thank you!
yo I never fucking understood this just blindly did the flashcards, I finally understand with this video
What would happen if person in first case move his head towards left
awesome..this explanation is something which is missing in most of the neurology books
This is brilliant explanation
excellent
so clear
❤❤
Besttttt
fair enough
Chicago in Trouble
I hope, scientifist find a solution for nystagmus... 😢
Recently my eyes seem to be moving side to side even when I'm talkin it's kind of weird I want to see what's going on so I Googled it and it shows up
Excellent
i have nystagmus
I have also. I want to do talk with you. Please reply