2-Minute Neuroscience: Motor Cortex

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  • Опубликовано: 7 фев 2025
  • In this video, I describe the location and functions of the primary motor cortex and the nonprimary motor cortex, which is often divided into the supplementary motor cortex and premotor cortex. I also describe the main pathways by which motor information travels away from the motor cortex: the corticospinal tract, which carries motor information to the spinal cord to cause movement of the body, and the corticobulbar tract, which carries motor information to the brainstem to cause movement of the head, neck, and face.
    For an article (on my website) that explains the motor cortex more in-depth, click this link: neuroscientifi...
    TRANSCRIPT:
    Welcome to 2 minute neuroscience, where I simplistically explain neuroscience topics in 2 minutes or less. In this installment I will discuss the motor cortex.
    The motor cortex is a region of cortex in the frontal lobe that is involved with voluntary movement. It is located anterior to a large sulcus called the central sulcus and is often divided into two major regions: the primary motor cortex and the nonprimary motor cortex.
    The primary motor cortex is found in the strip of cortex known as the precentral gyrus, which is located just anterior to the central sulcus. The primary motor cortex is arranged such that different parts of the region are associated with motor control of different parts of the body and thus is said to contain a motor map of the body.
    Most of the neurons that travel from the primary motor cortex carrying signals regarding movement will enter one of two major motor pathways: the corticospinal or corticobulbar tract. The corticospinal tract carries movement-related signals to the spinal cord to cause movement of the body, while the corticobulbar tract carries signals to the brainstem to cause movement of the head, neck, and face.
    The nonprimary motor cortex is often divided into two main regions: the supplementary motor cortex and the premotor cortex. Although the functions of these areas are not well understood, it is thought the supplementary motor cortex may be involved with the execution of sequences of movement, the attainment of motor skills, and the selection of movements based on incoming sensory information. The premotor cortex contributes about 30% of the neurons that enter the corticospinal tract, but seems to be more active during the planning of, rather than the execution of, movements.
    REFERENCE:
    Nolte J. The Human Brain: An Introduction to its Functional Anatomy. 6th ed. Philadelphia, PA. Elsevier; 2009.

Комментарии • 49

  • @jar00agr03
    @jar00agr03 5 лет назад +21

    Your videos are great at explaining neurological issues. I use them to explain complex issues regarding brain and spinal cord damage/conditions to people without a strong medical background, oftentimes to clarify what a doctor has told a patient. The two minute clips are ideal for holding a person’s attention without overwhelming them. I can pause, rewind, and answer questions easily. Please continue to make your videos!

    • @neurochallenged
      @neurochallenged  5 лет назад +4

      Thanks, I'm glad you find them useful! I've got no plans to stop making them in the near future!

  • @TarikJamoulle
    @TarikJamoulle 9 лет назад +72

    Neuroscience graduate here, your videos are really helpful and well made. Thank you!

    • @benjaminpetrofsky819
      @benjaminpetrofsky819 7 лет назад +3

      People should listen to you. Some people like to make alternative facts........

  • @Finne57
    @Finne57 6 лет назад +11

    I do like these because you are forced to try to process fast information on one topic at atime and the impression is it's not too much to do because it's so short and stand alone - but actually there is a lot here, plus the captions are invaluable. I feel I learnt something interesting from each - easily without having to relate lots of information.

  • @MDMD-dw3yt
    @MDMD-dw3yt 5 лет назад +5

    Thanks very much, my good friend has recently fallen sick with Essential Tremor. She now cant walk, its a very hard time for us. But i know God will see her through.

    • @jonnymo4728
      @jonnymo4728 3 года назад

      God is good. God is great. What a concept.
      Concepts frame beliefs that lead to understanding painful emotions.
      That lets us go on. God is needed so we can handle bad shit.
      There is only the belief. But then again that is all you ever needed.
      Science is not belief. Science is fact; process; design; development.
      I hope someones belief causes them to develop the process to help your friend.
      Then you can thank......science. But there is still space where God stands. In the gap.

  • @draishwaryaa8242
    @draishwaryaa8242 6 лет назад +3

    Amazingly simple and easy!

  • @ebrahimabdulrahman1134
    @ebrahimabdulrahman1134 3 месяца назад +1

    Thanks so much doctor ❤

  • @physiotherapistpaulina9340
    @physiotherapistpaulina9340 4 года назад +2

    It's a shame amazon won't ship your book to a Canadian address. I tried to order it. Here, it's more than double the US price...................... Your videos are great because they don't provoke stress like most other educational materials on neuroscience do. Thanks for posting them.

    • @neurochallenged
      @neurochallenged  4 года назад

      Ah, I wasn't aware that Amazon wouldn't ship to a Canadian address...sorry!

  • @icelysis3974
    @icelysis3974 9 лет назад +4

    You are my hero

  • @hajar.t2004
    @hajar.t2004 2 года назад

    شكرا على هذا الشرح البسيط

  • @Supernova-217
    @Supernova-217 6 лет назад +2

    underrated ^.^ its great! thanks

  • @FernandoFlores-ut8ic
    @FernandoFlores-ut8ic 6 лет назад +5

    MADLY IN LVE W THE BRAIN !!! 👍💪🙏

  • @ankitakacha5946
    @ankitakacha5946 7 лет назад +4

    great1.. v helpful.. thnkx

  • @misbahshokat7054
    @misbahshokat7054 2 года назад

    AMAZING SIR.
    UR CONTENT IS REALLY HELPFULL ✨✨✨🌹🌹🌹

  • @crystalss8354
    @crystalss8354 7 лет назад +6

    Very helpful thanx💕

  • @arnon-jaya
    @arnon-jaya 7 лет назад +3

    thanks

  • @Vishnuzash
    @Vishnuzash 2 года назад

    Well made awesome videos..Thanku very much

  • @ShingaaaShingaaaTV
    @ShingaaaShingaaaTV 9 лет назад +2

    beautiful

  • @afifalahmad6868
    @afifalahmad6868 4 года назад

    Impressive ,thanks a lot

  • @Ajlan_Alshehri
    @Ajlan_Alshehri 9 лет назад +3

    concise

  • @afifalahmad6868
    @afifalahmad6868 4 года назад

    God bless u

  • @andreyka26_se
    @andreyka26_se 4 года назад +2

    I've read tons of articles about how moving our bodies is going on. BUT I've found some part of topic just IGNORED. ALL authors just pass the part "our brain generates the signal". I have been trying to find the answer for 1 week and found nothing.
    Is it an unanswered question in neuroscience? Or they just skip because they don't know, or it is so trivial question and only I cannot understand it?
    Because in order to depolarize the neuron it should open ion channels by our wish. E.g. I wanna move my leg up, just because I can. My brain opens ion channels just because I want it. My will should be like physical power isn't it?

  • @wootlord
    @wootlord 6 месяцев назад

    if the motor cortex is right on the sulcus, then where is the senosry cortex situatued in the brain?

  • @Kilogya
    @Kilogya 2 года назад

    My gray matter is highly active while learning about the brain.

  • @rebeccawan3088
    @rebeccawan3088 5 лет назад +39

    thank god it's not "well understood" yet

    • @medfiles6862
      @medfiles6862 3 года назад

      Hahahaha

    • @fionakrieger570
      @fionakrieger570 2 года назад

      So relieved when was trying to take it all in and make sense of it.

  • @ياسميندمشق-ج2ط
    @ياسميندمشق-ج2ط 5 лет назад +3

    👍

  • @jaavid0
    @jaavid0 Год назад

    I need to learn how to make like this videos😢

  • @hanskraut2018
    @hanskraut2018 3 года назад

    Thank you very much, trying to “solve” Adhd (self-regulation dev. disorder).😅

  • @carlsteward9597
    @carlsteward9597 4 года назад +1

    The premotor cortex contains about 30% of the neurons

  • @yoshiglubschi
    @yoshiglubschi 2 года назад

    GOAT

  • @luizamascarenhas7782
    @luizamascarenhas7782 11 месяцев назад

  • @LeonardPC272
    @LeonardPC272 2 года назад

    this where all my anxiety comes from

  • @rosiewhitneyyy
    @rosiewhitneyyy 3 года назад +2

    Am I blind???? Or is he saying the precentral gurus is the red portion???? Isn’t that the postcentral gyrus.

    • @neurochallenged
      @neurochallenged  Год назад +1

      Look at where the central sulcus is (labeled at 0:18). The region anterior to it is the precentral gyrus; posterior to it would be the postcentral gyrus.

  • @the3genny
    @the3genny 8 лет назад +2

    please if possible talk slowly, otherwiae just great

  • @SuperThakid09
    @SuperThakid09 4 года назад

    Eat a bowl of cereal and rice drink some purple soda

  • @SuperThakid09
    @SuperThakid09 4 года назад +1

    And pizza too

  • @pikachu4151
    @pikachu4151 Год назад

    The purple region is the precentral gyrus, at least correct it rather than spreading misinformation

    • @neurochallenged
      @neurochallenged  Год назад

      Misinformation?? I clearly labeled the central sulcus at 0:18. The area anterior to the central sulcus is the precentral gyrus/primary motor cortex. For the purple region to the be precentral gyrus, the central sulcus would need to be anterior to the red region...So I'm not sure what you're referring to.

    • @pikachu4151
      @pikachu4151 Год назад

      ​​​@@neurochallenged hey, you might want to recheck 0:36 where you labelled the orange region as the precentral gyrus when it is clearly the post central gyrus, i.e post central gyrus is posterior to central sulcus

    • @neurochallenged
      @neurochallenged  Год назад

      @@pikachu4151 At :36 the region that I'm labeling is red and it is anterior to the central sulcus. The purple area in the video is the premotor cortex. The postcentral gyrus is not colored at all the video.

    • @pikachu4151
      @pikachu4151 Год назад

      @@neurochallenged alright, thanks