Phototransduction:  How we see photons

Phototransduction: How we see photons

Kerry Kim

3 года назад

191,880 Просмотров

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Комментарии:

@HelliarCOH
@HelliarCOH - 10.03.2025 19:24

Thank you for making up the animations. They are the best way to learn.

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@dhaktizero4406
@dhaktizero4406 - 27.02.2025 15:47

when you ingest a psychedelic where does the energy/information come from that stimulates the visual experience? it is perceived as an incoming energy, the light is coming in through your eyes, but your metabolic milieu is different, channels are open in different ways and for different times, but this leads to what is imagination imaging in the brain. how do we see at all even? so the question is how do drugs affect phototransduction?

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@Irnerio21
@Irnerio21 - 27.02.2025 13:13

Well done presentation, thanks. Please, improve the audio quality to be on par with the video. Thanks again for your work

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@tristanwegner
@tristanwegner - 19.12.2024 19:24

high quality science explanation video

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@abbasfathil837
@abbasfathil837 - 06.12.2024 09:51

This is the best educational video I have ever seen

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@Rom2Serge
@Rom2Serge - 20.10.2024 18:48

Thank u for this beautiful video.

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@manuelteixeira2496
@manuelteixeira2496 - 17.10.2024 23:40

Considering the human eye and how light is perceived by the human brain through the eye's retinal cells raises insights into The Awesome Creator's Power and Endless Love. Alleluia!

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@turun_ambartanen
@turun_ambartanen - 17.10.2024 00:38

you say that it takes on the order of one full second for the rhodopsin to become deactivated. Why does this not lead to a 1 second motion blur? Obviously the brightspots that you have in your vision after looking at the sun (or another bright light) are an artifact of the "cooldown" period (to borrow a term from Computergames).

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@American_Moon_atOdysee_com
@American_Moon_atOdysee_com - 11.10.2024 08:51

Thank you.

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@VariantAEC
@VariantAEC - 07.10.2024 12:56

If we know about the speed of such molecular operations. Why don't we know the franerate of human vision... You know, aside from the fact that any part of a cell could be activated at different times and that swathes of the retina could be or won't be activated at any given time in equal ways.

But, if we ignore the analog possibilities and focus on transduction of a single cell after photo amplification. How fast can a single rod or cone cell be activated by light and reset to accept a new light signal? You don't even have to answer this directly. Just directing me to an open access paper on the topic would be helpful.

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@Wackylemon64
@Wackylemon64 - 06.10.2024 23:59

Came here from clockwork! Your animations are wonderful, and help make the process of this pathway clear!

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@Chachaboyz
@Chachaboyz - 27.09.2024 18:19

Very cool to think about why the layers are 2D to increase the odds of collisions exponentially. Great video - thank you!

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@paolobarberis6827
@paolobarberis6827 - 31.08.2024 22:21

Please continue with the biophysics

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@christopherweldon2700
@christopherweldon2700 - 15.08.2024 13:16

This is a great video that I'll be sharing with my third-year animal physiology students! The only additional step that would be useful is how the hyperpolarisation of the membrane leads to a change in neurotransmitter release to the bipolar cells.

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@heidideplazes4684
@heidideplazes4684 - 22.04.2024 00:59

I literally watched 5 videos and reread my book like 3 times to try to understand this concept and all the videos were either lacking labels or lacking visuals. This one actually made it slightly understandable. Thank you. Difficult concept to explain and show, but you did a great job.

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@misastrejckova5389
@misastrejckova5389 - 13.04.2024 22:06

TOP! LOVED IT!

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@Dyslexic-Artist-Theory-on-Time
@Dyslexic-Artist-Theory-on-Time - 06.03.2024 22:12

The spontaneous absorption and emission of light photon ∆E=hf energy or quanta is continuously exchanging potential energy into the kinetic Eₖ=½mv² energy of electrons. Kinetic Eₖ=½mv² energy is the energy of motion of what is actually happening as an uncertain ∆×∆pᵪ≥h/4π probabilistic future continuously comes into existence with each photon electron interaction or coupling.

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@maikhendrik8966
@maikhendrik8966 - 07.02.2024 16:03

Thanks I have such a better understanding of the real processes now, I can't believe it.

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@deanwidiani3244
@deanwidiani3244 - 11.12.2023 10:48

Hello Mr. Kim. Thank you for uploading this amazing explanation of transduction. May you answer my questions?
1. What happen after the signal is strong enough for a rod cell? How the vision is made?
2. How an immense light (for example: seeing sunlight) can cause temporary blindness? I still can't correlate it with how a photon activates a rhodopsin (too much photon... too many rhodopsin activated?...???)

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@aminamouhamed456
@aminamouhamed456 - 08.12.2023 17:47

Thank you for your work! Where can I learn to do such animations?

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@ArshadAhamed.A
@ArshadAhamed.A - 22.11.2023 16:34

Thank you so much.

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@cheradenine1980
@cheradenine1980 - 16.11.2023 05:19

That’s just miraculous.

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@davidquispeescudero3351
@davidquispeescudero3351 - 08.10.2023 01:03

What happens to the photons once they cause the configuration change of retinal/opsin? Are they absorbed by opsin and used as energy by the neuron or are they kept as photons and passed along to other cells? Thanks a lot in advance

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@Kaador
@Kaador - 07.10.2023 12:31

Hope you get your titel. I liked those two short videos very much

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@codydicken6400
@codydicken6400 - 13.09.2023 04:49

My god this was one of the best videos I’ve ever seen

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@Ugez439
@Ugez439 - 22.08.2023 17:56

How and where it is link the tangible body and intangible soul , how the two different forms of nature exit in one form as living being.???? Thankx

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@kyle5372
@kyle5372 - 21.07.2023 08:02

Please return we need more of these!!

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@TheBlackRock-
@TheBlackRock- - 05.07.2023 00:24

This was awesome can’t imagine the effort put into making of it

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@vladimirkirichenko1972
@vladimirkirichenko1972 - 04.06.2023 18:47

Phenomenal channel Mr. Kim!

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@rbelatamas
@rbelatamas - 24.05.2023 04:36

incredible ❤

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@toddlichtenwalter2041
@toddlichtenwalter2041 - 23.05.2023 15:03

As I am watching this, I keep saying how can someone think we are not in the Matrix, that only a Supreme Consciousness is capable of such complexity. We are living in the Divine Drama. Atheism is a disease of the ego and an impure intellect.

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@lopiklop
@lopiklop - 20.05.2023 04:37

I think when we itch, blink, or breathe. Those are the times we are aware of at least, the consequences of individual cells. Other than those scenarios it's impossible, our brain aint meant to do that.

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@frederikesonnenschein
@frederikesonnenschein - 12.05.2023 02:48

This video is incredible

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@houriak848
@houriak848 - 28.04.2023 20:27

Plssss do more videos if u can't pls can u recommend to me a physiology book website..... Cuz i have so many confusions

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@seanmortazyt
@seanmortazyt - 26.04.2023 00:54

fantastic

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@NerasW
@NerasW - 21.04.2023 14:12

please make any new video, it's nice to listen to a well educated person. Thank you for sharing your knowledge

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@arkopalsen8538
@arkopalsen8538 - 06.04.2023 08:06

Can cAMP or other cNTP be used to target the ion channel?

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@khalid6050ify
@khalid6050ify - 20.03.2023 12:22

Your documentary & animation is so wonderful that you are solving what God has created to ion level. How can you help improve the efficiency of Rods & Cones by food supplements. People say eat Carrots.🙏😌😳👻🇨🇦

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@StephenGillie
@StephenGillie - 15.03.2023 21:08

How would we describe something like the surface of a cell, in quantum mechanics? A tardigrade could only be entangled after it was frozen - does this mean the molecules involved in life are not coherent nor decoherent, but incoherent to our understanding of the universe?

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@Aarifjamil
@Aarifjamil - 15.03.2023 17:36

Very interesting visuals of photon, my question you that how our eye can read certain frequencies which make us enable to see different colors and yet we are unable to watch in dark like bird BAT do or some other creatures who can view those thing which humans are unable to see.

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@johnterry6541
@johnterry6541 - 15.03.2023 08:36

Now imagine how your rods and cons are dancing a bad dance for the brain during continuous you-tubing.

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@justanotherguy469
@justanotherguy469 - 12.03.2023 12:13

Great video sir. Thank you. What I find to be amazing is that on the molecular level, there are trillions of interactions taking place, but then on the atomic level there are trillions and trillions more, and then on the sub-atomic level there are even more. The question is, what gives all of these interactions the synchronicity to function as one?

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@Andrewatnanz
@Andrewatnanz - 10.03.2023 20:34

Amazing !

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@stober51
@stober51 - 08.03.2023 12:00

We know that men have a longer persistence of vision than women. Basically, this is why men see a ghost trail behind moving objects, and women do not. Actually, I find it fascinating that women can play sports with a moving ball, like tennis, and base-ball so well without that advantage which men possess. I noticed that you mentioned the active period of the excited cells wanes and swiftly ends, but what is actually the difference in this time-period between a male and a female? With an object tethered via string and spun in a continuous loop about six feet in diameter, a man can see the trail nearly half of the rotation, where a woman will see no more than a few degrees of rotation. How is the female "Cone" different from the male? I remember reading about a group of anthropologist discussing, in the late 1970's, several differences between men and women, such as hair on the arms of early man for crawling thru the brush, and that ghost trail so we could hit the rabbit with the rock. That may be why it happened, but what was it that happened? Thanx

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@NeonsStyleHD
@NeonsStyleHD - 08.03.2023 06:08

Fascinating to see how these interactions lead to the electrical signals the brain interprets as the world around us. It seems after watching this, this world is a holy imagined thing rather than real! Maybe we are in a hologram.

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@amorphousandrogynous
@amorphousandrogynous - 07.03.2023 08:10

I wish you had hundreds of these videos. Thank you

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@nyttag7830
@nyttag7830 - 07.03.2023 06:13

How did these nanno machines ever come about 🤔🤗😉😉😆

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