Thank you so much. My professor spent 30 min talking about gamma motor neurons and still failed to provide any clear, meaningful information. You managed to convey the info in 3 min 40 sec in a clear, linear manner. You rock!
Its not 'during' contraction. Its in contracted 'state'. Like for biceps of arms, you want your elbow to be sensitive to stretch even when its somewhat flexed. Now as I am typing this, I am realing that sensitivity to stretch matters more when muscle is somewhat contracted. I mean, stretch on fully extended elbow would break it..!!!😅 Anyway,. I hope you got the point.
Head to search bar in RUclips Type "Uchicago online" And go playlist 17.0 If u want directly alpha Gamma co activation go to 17.2 video. This guy non stop neuron doesn't know how to interpret the concept well. Look at his explanation for ur question
Hey great video. I wanted to know what is the role of gamma motor neurons in preventing hyperrelexia. As I read that upper motor neuron lesions lead to loss of the gamma neuron reflex.
No. Contraction of extrafusal fibers loosens the stretch sensitive central region of the spindle. So to make tighten it, the intrafusal fibers also contract. If you are not able to comprehand this, think of it like this: the length of central region should be maintain constant to maintain its sensitivity. Now watch the animations again. You will get it. I hope it helps.
Thanks, new subscriber! I have 2 questions: - Does gamma motoneurons only activate in a voluntary contraction, and not in the myotatic reflex? - Does the contraction involve shortening or stretching of the extrafusal fibers? Greetings from 🇪🇦!
Gamma motor neurons also activate as part of the stretch reflex because, just like alpha motor neurons, they are innervated by tipe 1a fibers. If gamma motor neurons didn't activate after extrafusal contraction, the muscle spindle would become slack and would stop measuring the stretch of the muscle. Contraction causes fibers to shorten, both intra- and extrafusal.
Ur saying that muscle spindle becomes slack with extrafusal fibres contraction. Ok Then the presence of myofilaments at the ends of muscle spindle should cause more slack due to contraction of them by gamma motor neuron... Explain it clearly U should have said a little more about myofilaments at the ends of intrafusal fibres. If myofilaments at the ends of intrafusal fibres contract how could spindle become stretch??????
@@EasyPeasyLeBro,the gamma motor neuron’s act on the polar ends of the intrafusal fibres and so their contraction lengthens it instead of shortening it😅
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And what Indians are given is an amazing medical knowledge and teaching talent!
Very helpful, exactly what I was searching to understand this concept.
Thank you so much. My professor spent 30 min talking about gamma motor neurons and still failed to provide any clear, meaningful information. You managed to convey the info in 3 min 40 sec in a clear, linear manner. You rock!
You are literally a time saver dude ❤❤❤❤
Thank you so much for your teachings! They are awesome.
Thanks. This was a perfect explanation of what I was after!
Very nice explanation ,simple and clear
Thank you for your invested time to share knowledge with us. God bless you man
Really great video. Well done!
This helped me so very much. Thank you!
Thank you so much, to the furthest galaxy and back, you saved the day😭🙏🏽
Thank you brother for such a simplified explanation!
Thanks a ton! Very helpful!
Amazing, greetings from Sweden
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Fantastic explanation 💗
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Perfect explainatioan💕
Thank you, very understandable explained
Loved it. Very well explained.
Good one.. watching from Nigeria.
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This was very helpful, thank you
very clear, thanks.
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Thank you
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Thank you so much
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very well explained !
i had this same question whts the role 0f gamma ,,,,,really nice very helpful
Great video. Thank you so much
So helpful thank you
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great explanation. thank you bro..
very good video, just 1 question sir, is this the same as gamma loop
U forget to tell about the role of secondry nerve ending(type 2 fiber)
Thank u so much sir!!!
Thankyou
Perfect Thanks!
Most welcome
amazing thank you so much
Why do we want our muscle to be sensitive to stretch during contraction? What does it look like physically when gamma helps intrafusal fiber contract?
Its not 'during' contraction. Its in contracted 'state'. Like for biceps of arms, you want your elbow to be sensitive to stretch even when its somewhat flexed. Now as I am typing this, I am realing that sensitivity to stretch matters more when muscle is somewhat contracted. I mean, stretch on fully extended elbow would break it..!!!😅 Anyway,. I hope you got the point.
Head to search bar in RUclips
Type "Uchicago online" And go playlist 17.0
If u want directly alpha Gamma co activation go to 17.2 video.
This guy non stop neuron doesn't know how to interpret the concept well.
Look at his explanation for ur question
@@NonstopNeuron wow
شرح راقي 🫡
Hey great video. I wanted to know what is the role of gamma motor neurons in preventing hyperrelexia. As I read that upper motor neuron lesions lead to loss of the gamma neuron reflex.
Great 👍👍👍
Amei, nota 10
Nice
Awsome
I think at 2:33, it is relaxation of intra by gamma , like the opposite to extrafusal movement???
No. Contraction of extrafusal fibers loosens the stretch sensitive central region of the spindle. So to make tighten it, the intrafusal fibers also contract. If you are not able to comprehand this, think of it like this: the length of central region should be maintain constant to maintain its sensitivity. Now watch the animations again. You will get it. I hope it helps.
@@NonstopNeuron here contraction of intra in the sense increase in length or decrease in length .
Because in the video for contraction the intra is increased in length I thought it is stretching. I'm really getting confused 😕
Thanks, new subscriber!
I have 2 questions:
- Does gamma motoneurons only activate in a voluntary contraction, and not in the myotatic reflex?
- Does the contraction involve shortening or stretching of the extrafusal fibers?
Greetings from 🇪🇦!
Gamma motor neurons also activate as part of the stretch reflex because, just like alpha motor neurons, they are innervated by tipe 1a fibers. If gamma motor neurons didn't activate after extrafusal contraction, the muscle spindle would become slack and would stop measuring the stretch of the muscle.
Contraction causes fibers to shorten, both intra- and extrafusal.
Ur saying that muscle spindle becomes slack with extrafusal fibres contraction. Ok
Then the presence of myofilaments at the ends of muscle spindle should cause more slack due to contraction of them by gamma motor neuron...
Explain it clearly
U should have said a little more about myofilaments at the ends of intrafusal fibres.
If myofilaments at the ends of intrafusal fibres contract how could spindle become stretch??????
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Jo apna kaha hai spindle slack ho raha hai ho intrafusal fiber ki BAAT ki hai ?
ha.
Then which motor neuron is involved in golgi tendon reflex ?
Does gamma motor neuron causes stretch or contraction of intrafuschal fibres?
Stretch
@@NonstopNeuronthen when does the intrafusal contract?
@@EasyPeasyLeBro,the gamma motor neuron’s act on the polar ends of the intrafusal fibres and so their contraction lengthens it instead of shortening it😅
OMG OMG OMG IT'S SO FUCKIN CLEAR 😘😘😘😘😘😘😘😘😘😘😘😘😘☺️
Thanks a lot! Great explanation
Thanks, very helpful
very helpful , thank you