The Sensory System
HTML-код
- Опубликовано: 29 июл 2024
- Paul Andersen explains how we perceive our environment using our sensory system. He starts with a brief discussion of action potentials and the nervous system. He shows that we many more than five senses. He goes into more detail to show how humans smell, see and hear.
Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: www.freesound.org/people/Cosmi...
Creative Commons Atribution License
Anybody watching Mr.Andersen video in 2022......his video and concept quality brings me here again..... From the bottom of my heart I'm sincerely thankful to Mr.Andersen.
Mr. Andersen: "You can't smell me."
Me: *sheds a tear*
That's so hilarious because I heard " you can smell me" , lol !!!
Dear mr Andersen, I have never thanked you for your great lessons. I have already passed my exams two years ago and now for my studies I needed to find some information on biological subjects. I immediately thought of you, nevertheless I have always recommended you to everyone in need for a great biological explanation. I sincerely would like to thank you for your great explanations, I would have never passed my exams without these great videos.
Just wanted to say a big thank you for making a very complex subject really easy to understand in principle. Cheers
He is a great teacher and fantastic teaching style. I am a Junior in college and use him and Khan Academy for all my science lessons, like A&P 2 right now a 300 level course.
just read a bunch of wikipedia pages its fun and easy
That yell had me though 🤣
Your a great day teacher I tell all my peers about your videos, they really help me with classes
RIP for headphone wearers @ 2:33 😂
+Yoda Ydyxz OMFG! That scared the crap out of me!
Are you talking about when he screamed I think you are R.I.P Headphone wearers lol
if only i read the comments first. rip me
😂😂😂
F in the chat boys
RIP headphone users. Thank you for the great video and for loosing one of my senses when my ears blew up
2:33 I freaked out
your 100% better then my biology teacher in my school and with my final exam in biology tomorrow iv been watching quite a lot of your videos. thanks for helping me pass
Thank you for posting all of these, they are very helpful for reinforcing whats going on in class. Also, I'm always impressed with how smooth your writing with the mouse is... haha when I do that it looks like a a gripped a crayon with my foot.
I failed my humanbiology exam last semester because it was around 500 pages to study but these videos make it a lot easier for me this time! i'm actually motivated =)
lmao loser
2:23 Wow, Mr. Anderson is a great singer
I love mr.Anderson! He is brilliant!
Thank you i forgot this stuff, now it's coming back.
2:33 scared me so bad omg
I scared too when his voice became high lol
you guys are so immature with this
happieholly71 hi
Don't be scared lol
Really?
Absolutely phenomenal. Thank you.
Thank-you for such a pleasant explanation.
Nicely explained! thanks Mr. Anderson.
I learn visually so thanks so much for the help, keep it up, your videos are awesome !!
You are seriously awesome! Your vids truly help me understand topics more in depth! Thanks!!!!
Many Thanks. You are an amazing teacher
Thanks for all you do!
I WILL NEVER LOOK AWAY FROM THESE VIDEOS EVER AGAIN ;-;
excellent videos helped me understand the brain. thanks continue posting
Thank you for posting this -I am a Layman in this field and hope to have more understanding of this subject. I have had a septo-plasty surgery and am suffering heavy modulation & habituation of my coalition of neurons in my CNS.especially in my BASAL GANGLIA.
Thank you from England!!!
U scared the shit out of me at 2:32
Again thank you so much
Muchas gracias. Saludos desde Chile.
thanku, great info
If you freeze the video at 1:05 so that the little 'A' is superimposed on the bigger A you can plainly see that the 2 A squares are of distinctly different shades. I have seen this demonstration on many different channels. Is this part of some vast conspiracy?
Turn the volume up @2:30 because the noise is too quiet to hear at lower volumes
bio diploma?
audio technician prospector
Thank u Mr..
Thank you for making studying so much funnier and life so much easier!
you are a perfect teacher!
Thanks, Jacob!
thanks a lot!
I love you pal. Amazing and very very helpful video!
you are a lifesaver, hands down.
i really luv all ur videos dey r sooo much help full to me to undrstnd all dese concepts soo clearly!
Really like your style
Please continue to post
RIP my ears
Thanks a lot!
mr Anderson is the GOAT
YOU MAKE LEARNING A LITTLE EASIER FOR ME TO LEARN
god bless this man
thank you
I love this guy....
Awesome !!!!
I DIED AT 2:33
ohhhhhhhhhhh love you!!! please keep posting sensory system videos please!!!!
thank you G
Where can I get the information ℹ️ what u talk I want to print to out and save it . Thanks
is there a longer version of this?
When we smell , what are we smelling (in general)?
i tried to make chess board type table in ms paint and then put their A and B box of same dark color but that does not changes the color when put in the white portion box of the board.
thanks it is so amazing video
Thank you :D
D: why would you hurt me like this.
thanks a lot
If im not mistaken, RGC's are the only retinal cell who can communicate via action potential.
Estupendo!
Its not a complete explanation of a version of a sensory stimulation system (im so depressed and miserable i would love to build a robot sensory system to use what is available to make my feelings better.) We like your video! Maybe all of our Sensory Servers will get creative and use what we have to make the most out of our lost and potentially non functioning input ability to make adequate adjustments to live and the persons involved (Live is so sad right now). 🍏 💚
Wait, but why exactly do other people's houses have different smells? I've always wondered that. Anyone know?
@Bozeman Science, I hope you check the comments. I understood than intensity of a sense is based on frequency of action potentials from your video. So, can we say that in sensory system and neurons, whenever action potential frequency is high, it means intensity of that sense is high (two way communication)? Also, as I'm learning from other videos, action potential is happening in axons, where messages are carried on, to prevent voltage loss in long paths; and longer the path, more action potential will be. So action potential is also a factor of length of axon. Then, how can we distinguish if number of action potential in an axon is related to intensity of a sense only (like a loud sound we hear) or it's due to long length of an axon?
@Nima: First, I am not an expert, just a life-long 'student', so please take my response with a grain of salt:
1. You said, "I understood than intensity of a sense is based on frequency of action potentials from your video." YES. I think you understand this correctly.
2. But then you asked, " can we say that in sensory system and neurons, whenever action potential frequency is high, it means intensity of that sense is high (two way communication)?".
I would have again simply have said yes, and as far as I know, it is, but WHAT DO YOU MEAN BY 'two way communication' ? Your addition suggests likely misunderstanding.
3. Yes, action potential IS happening in axons (perhaps only mostly? I think 'back propagation' MAY sometimes happen in dendrites, not sure.) But in LONG axons, the action potential is not ALL that is happening with regard to the SIGNAL. In long axons the signal is a COMPOSITE called Saltatory Conduction, which is made up of alternating instances of action potential and graded potential. Graded potential for SPEED, and action potential for RE-AMPLIFICATION (to bring the WEAKENING graded potential back up to normal action potential amplitude).
4. But you seem to be misunderstanding axons with regard to myelination. Not all axons are melinated, some, wholly within the cortex layers and also inside brain nuclei can be very short and not be nor need myelination.
5. And when an axon IS myelinated, it does NOT make 'more action potential', it rather allows the signal which is only in part the action potential to be carried FASTER, so that where ever it's going it can get there in a useful time in relation to all other neural events.
6. So action potential (the SIZE of it) is NOT a factor of the length of the axon. Melination (and the alternating action potential at nodes of Ranvier BETWEEN the alternating sections of myelination, and the graded potential UNDER the alternating sections of myelination, yielding Saltatory Conduction), allows for the action potential to reach its destination in a 'speedy' manner, at its normal size & strength, despite some axons being very long, like those reaching or coming from your big toe.
7. So there IS no problem "distinguish(ing) if number of action potential in an axon is related to intensity of a sense only (like a loud sound we hear) or it's due to long length of an axon?", because the length of an axon does NOT 'increase' the intensity of the signal. The myelination simply helps the signal (the COMPOSITE signal, saltatory conduction) to travel faster, in which the myelination speeds up the signal, while the action potential allows the signal to be 're-amplified' after some loss or strength under each myelination wrapping. The end result is a signal which is as strong at its ending as it was to begin
with at its initiation, and also travels fast enough to be useful.
8. I hope this helped, but if it didn't, perhaps these might:
en.wikipedia.org/wiki/Saltatory_conduction
www.khanacademy.org/science/biology/human-biology/neuron-nervous-system/v/saltatory-conduction-neurons
How brain reacts when same thing happens for diferent person is it base on ,.. or family histry or his emotions?
when you shouted you scared my cat she is now staring at the laptop like its possessed
some of the loudest things in the world, ranked
4. jet engine
3. thx logo
2. COMING SOON TO OWN ON DVD
1. 2:33
You can hear me, you can see me, and you probably can't smell me. Score 1 for Hellen Keller. Thanks for your videos by the way, my grade has gone up 27% since I've seen them.
How to improve sences or sencer going ahead.
Khan is the foundation of a building, Anderson is the Building blocks...so if ur foundation is strong, u can achieve a beautiful building.. I saw the nervous system videos in khan and now i understand action potential from anderson very effectively..so anderson and khan are my two eyes.... :D
This video is so great!!! Even if your native language isn't english, you'll understand it perfect.
When people make little movements with their fingers or other body parts and I see it in the corner of my eyes why is it really irritating like I can’t ignore it even if I really tried or if someone is shaking their head vigorously and I’m seeing it why does it have a disturbing effect?
Also if they make sounds it overwhelms me and causes me to be anxious like how is this effect possible?
your retina is mostly made out of the rods which detect motion and value primarily which is why you see motion in your periphery so well (also part of why you see motion more than detail at night...) its more complicated than that but thats the best I can do in a you tube comment
Holon Rumsey what do you mean value primarily ?
i have mild crossover, and when something is just right, the smells and the sounds and vision all have a sort of contextual change, certain smells can make me see certain colours better, or less, but typically it just makes movies more interesting if they are good (this might be a normal thing i'm describing weird btw)
good job
Awesome
what does perfect pitch have Tod do with cochlea
are you going to make a motor system video pleeeeassee
I found it to basic to grasp a consistent understood to compliment lecturing in respect of minors and young to degree acceptance of information, be kind to me as a student of assessment regarding my own British children's varied age group. one of which ,24 years now teaches much to my delght
anybody watching in 2019
2020 anyone ?
@@lynab9422 here
2020;)
nope,i am watching in 2020. XD
2020*
awesome
Helpful
Mr. Andersen is officially the Duke of Spook
Smartuy he may seem to be the cream of the team when it comes to memes
+Eva Aitken well got test tomorrow so wont help me
Tuna sallad study then stopid
Smartuy *Stupid
what is a concha?
I love you.
Mr. Anderson: saving my AP Bio grade, one video at a time c:
is it real? some people that when they'll hear a sound and it will be like colors?
Basically in a nutshell, yes. This is a type of synesthesia called chromesthesia.
where did you disappear mate missed you and your videos
If I were to make a slightly louder noise WAAAHHAAAGHOO!!!! Hahaha. Gold!
I will completely purify and release my neurosensory system of all natural and negative effects. In doing so i will unleash from my sensory system neuro storm that will only affect those who contributed the pain and suffering caused to y system. All my senses will be cleaned as well as ,y love ones my son and love.
Post stroke, I can’t smell, but I can taste and I can “feel” the chemicals in some things in my nose. Weird stuff!
Learned this recently in school
haha what the heck you almost made me deaf by screaming:)
Glad I read through the comments -_- otherwise it would've given me a higher volume of AP..
I'm glad I don't have action potentials going to the wrong part of my brain! But I do have head aches were I loose my vision. I just had one. And now my right hand is numb.
I love you too.
1:28 nerve singals 😂😂