- Видео 24
- Просмотров 227 169
Bing Wen Brunton
США
Добавлен 13 сен 2013
Hi! I'm a scientist who thinks about brains and behavior. I love to talk about math and data. This channel has videos on a variety of topics related to my research and teaching, including Neuroscience, Data Science, and Biology.
My research group at the University of Washington in Seattle develops data-driven techniques inspired by and applied to neuroscience. See my website for more on research and teaching.
Prof. Bing Wen Brunton
University of Washington, Seattle
www.bingbrunton.com/people/
Twitter: bingbrunton
My research group at the University of Washington in Seattle develops data-driven techniques inspired by and applied to neuroscience. See my website for more on research and teaching.
Prof. Bing Wen Brunton
University of Washington, Seattle
www.bingbrunton.com/people/
Twitter: bingbrunton
Color vision | Rod and cone cells in the retina
This video follows the previous video on the neurobiology of visual perception, and here we are digging into how we see the world in color.
We start at the biochemical basis of photo absorption by different rhodopsin molecules in cone photoreceptors, and how the differential activation of cone receptors give rise to our ability to tell light of different wavelengths apart.
Bonus: Why is the sky blue?
Playlist for all videos in series: ruclips.net/p/PLqgZEQsU_8E0l1P9bKR6yKOKPMpoJ_tLR
Professor Bing Wen Brunton
www.bingbrunton.com
We start at the biochemical basis of photo absorption by different rhodopsin molecules in cone photoreceptors, and how the differential activation of cone receptors give rise to our ability to tell light of different wavelengths apart.
Bonus: Why is the sky blue?
Playlist for all videos in series: ruclips.net/p/PLqgZEQsU_8E0l1P9bKR6yKOKPMpoJ_tLR
Professor Bing Wen Brunton
www.bingbrunton.com
Просмотров: 3 573
Видео
Visual perception | Retina, photoreceptors, and rhodopsin
Просмотров 49 тыс.Месяц назад
We don't see with our eyes, we see with our brains! This video is the first in a series on how the brain senses what's going on in the world. We start at vision, with the organization of the retina, the neurons that sense light, and the rhodopsin molecules in those neurons that transduce photons into activation of the nervous system. Retinas are quite a bit more sophisticated than the photodete...
Non-invasive Methods in Neuroscience, fMRI, MEG, EEG
Просмотров 1,7 тыс.Месяц назад
This video is an overview of common ways to peer inside brain without brain surgery. These methods rely on the fact that neurons communicate with each other by electrical activity, so we can pick up on some hints of this electrical activity outside the skull using magnetic and electronic measurements. These methods are used for scientific research and clinical applications, in humans and non-hu...
Optical Methods in Neuroscience: Calcium Imaging, Optogenetics
Просмотров 3,2 тыс.2 месяца назад
This video introduces the most commonly used, modern approaches to use light to record and manipulate the activity of neurons in the brain. Because the only thing neuroscientists love more than neurotransmitters is lasers. The methods I highlight include calcium imaging, voltage imaging, and ways to manipulate neural activity using light with optogenetics. I also discuss the advantages, limitat...
Electrical Methods in Neuroscience: Multi-electrode Recordings, Spike Sorting, Raster Plots
Просмотров 4,6 тыс.11 месяцев назад
This video is an overview of historical and modern methods to record from and stimulate neurons using electricity and electronics. Methods covered in the video include intracellular recordings (patch clamping), extracellular recording with sharp electrodes, and multi-electrode arrays. We explain the basics of spike sorting and summarizing the activity of neurons with raster plots. Beyond record...
Coordinates and Sections of the Nervous System
Просмотров 3,2 тыс.11 месяцев назад
This video establishes the coordinate system of the brain, including the anterior-posterior axis, the dorsal-ventral axis, and the medial-lateral axis. Since the brain is a 3D structure that is hard to visualize, we also define the most commonly shown sections of the brain: the coronal, horizontal, and the sagittal sections. These coordinates are crucial for talking about the organization of th...
Is the Brain a Computer? | Sensing and Action in the Brain
Просмотров 2,8 тыс.Год назад
Is the brain a computer? Believe it or not, this question is still regularly debated. But more interestingly, why is this a question we even ask, and how did we come to ask it? This video introduces the plan for the second set of lectures in Introduction to Neuroscience, where now we think about how the brain integrates sensations to produce action, which in turn interacts with the external wor...
Drug Addiction and Learning
Просмотров 4 тыс.Год назад
One intriguing idea about the mechanism of drug addiction is that it hijacks the same neurophysiological mechanisms underlying natural learning. This short video is a high-level overview of this idea, where I connect the theory of reinforcement learning, prediction error, and dopamine with the action of cocaine & other addictive drugs. Bonus topics: (1) the chemical historical parallels of hero...
(Recreational) Drugs and the Brain
Просмотров 4,2 тыс.Год назад
Every part of a synapse is a potential target for drugs. (You have likely heard of many of them 😉). This video is a gateway topic between cellular & molecular neurobiology and systems neuroscience every part of a chemical synapse is a known target of (recreational and otherwise) drugs, yet their effects are also determined by which neural systems are involved. Here we take a tour of several rec...
Types of Synapses
Просмотров 3,4 тыс.Год назад
Why do we say that a neuron is a "glutaminergic" or "glycinergic" neuron? Does one neuron necessarily release only one type of neurotransmitter molecular at all its synapses, and do synapses have to involve neurotransmitter release at all? (Short answer, no and no :-) All synapses are not the same. There are many different ways one neuron can affect the electrical activity of another neuron. Th...
Synaptic Transmission at a Chemical Synapse | Quantal Release of Neurotransmitters
Просмотров 5 тыс.Год назад
The human has 86 billion neurons, and every neuron makes 1000 to 10000 connections with other neurons these connections are called synapses. This video introduces the dynamic steps at each synapse, where the activity of the "from" pre-synaptic neuron causes changes in activity in the "to" post-synaptic neuron. The video goes through all the molecular steps involved in a chemical synapse, the me...
Neurotransmitters | Ionotropic and Metabotropic Receptors of the Synapse
Просмотров 4,8 тыс.Год назад
Neurons' synapses talk in neurotransmitters, and there are lots of neurotransmitters! But what they actually say depends on the post-synaptic receptors that are present to listen. Dopamine, serotonin, glutamate, acetylcholine the This video introduces the major classes of protein receptors responsible for receiving neurotransmitters at chemical synapses: fast ionotropic receptors, and slower me...
Anatomy of a Neuron | Parts of a Synapse
Просмотров 3,8 тыс.Год назад
Neurons are excitable cells this video is about neurons and how they talk to other neurons. The first part of the video highlights how neurons are different in shape from other cell by naming the compartments of a neuron. The second part of the video introduces the parts of a synapse, a specialized part of a neuron that talks to another neuron. The "from" neuron is called the pre-synaptic neuro...
The Action Potential | Myelinated Axons
Просмотров 6 тыс.Год назад
Action potentials are exciting all-or-nothing events in neurons, where a membrane depolarization becomes self-reinforcing and quickly travels down the length of axons. Action potentials are neurons' solutions to passing electrical messages reliably, without fail. This video introduces how voltage-gated ion channels and their positive- and negative-feedback loops explains the characteristic shap...
Active Properties of Neurons | Responses to Current | Cable Equation in Axon Conduction
Просмотров 6 тыс.Год назад
Neurons are always ready for change! Building on the last video on the resting, passive properties of neurons (governed by Nernst Potential and Ohm's Law), we explore how a neuron's voltage responds to addition of current. We derive and reason through the equation for how the membrane changes in time through exponential depolarization and hyperpolarization, as a function of properties of the ce...
Why do neurons have an electric charge? | Nernst Potential | Resting Potential of Neurons
Просмотров 12 тыс.Год назад
Why do neurons have an electric charge? | Nernst Potential | Resting Potential of Neurons
Animal Electricity | The Neuron Doctrine
Просмотров 9 тыс.Год назад
Animal Electricity | The Neuron Doctrine
Intro to Neuroscience, Overview and goals
Просмотров 38 тыс.Год назад
Intro to Neuroscience, Overview and goals
Data Visualization: Storytelling with Data
Просмотров 15 тыс.5 лет назад
Data Visualization: Storytelling with Data
Sparse Sensor Placement Optimization for Classification (SSPOC)
Просмотров 10 тыс.8 лет назад
Sparse Sensor Placement Optimization for Classification (SSPOC)
8:11 To me the sky isn't just blue or cerulean, but also these blue colors with a considerable amount of red mixed in. Not a magenta, but a red-blue or red-cerulean. I have (artificial) tetrachromacy, so that's why. 17:01 This is a common misconception. Trichromacy does not grant "the already perfect" color vision. Each additional functional cone class increases the dimensionality of one's color vision by (roughly) one. This means that adding e.g. a 4th functional cone type to a trichromat would result in a 4-dimensional color space, 3-dimensional hue-saturation space, and a 2-dimensional hue space. The occurence of these extra classes of mostly non-spectral hues and colors might by relatively uncommon, depending on where the cone class lies, but the increase in dimensionality is true nonetheless.
This is absolutely incredible!
Do you know the Pyramidal Mind Theory?
Excellent!
Thank you for another great class.
Appreciate this.
Thank you.
Excellent information than you!
Great lecture, but the use of the inverted electromagnetic spectrum was an interesting choice. Is it a convention among the medical field or she just wanted to mess up with people? 🤣
The tip of looking slightly away given at minute 31:43 is often applied instinctively when looking at something in a very dark room.
Doctor i would like to more about foveal vision, peripheral vision. How to use foveal vision and peripheral vision...
I saw previous videos from the playlist, she keeps repeating herself, asking a lot of rhetorical questions, and trying too hard to be engaging. Basic concepts & general ideas get lost with all the unnecessary repetition and how she never gets straight to the point. I read other comments and I see other people also find it difficult to grasp. Playlist says "Introduction", but this is totally not for a beginner who just start to study neuroscience. I am grateful for the teaching though, wish all the best.
You explain so well thanks !❤
Absolutely fascinating
Excelent presentation. 👍
Her name is literally big brain
If you are not hardwired for mathematics, you better stop watching this playlist after the first video. all the other videos are filled with maths and are not as interesting as you would expect
سبحان الله الخالق المبدع العظيم
The whole playlist looks amazing, but gosh, this math filled lecture is boring and impossible to understand to people who don't have their brains hardwired for maths! If what is discussed here is not used in the future lectures, what's the point of all these formulas? I literally started having headache, trying to follow the words.
i am thankful for content on a level i dont get bored metally yawn or roll my eyes at the description. i run my own llc doing service and installs for sprintray 3d printers for dentists plus secure kiosks and atms. i dont get to work with scientists and engineers very often anymore. thank you. feel less trapped by the barrier calculus can put on discussing ideas and implementation.
The bilateral system of animals which confuses the real conciouness boundries becase it is in two same divided balancing each other and griped together never leave so go for singualrity and when conciouness will comes to singualrity that will be now central holding and whole way of feel communcaiton coordination will go changed you now all do by pump like or conciouness from that centre go to different part and collapsing to hold those part and again it it is one way not reverse the pure conciouness go to their centre
What will if whole conciouness which in courses of time deflected from their boundry and go to hold another where when we solving it brings it it in in pure boundry inside as i do i brings all consciousness in a nerves boundry inside holding that i only is my whole consciousness is nerves a part of nerves i holded it and holding it all other things for that becomes center and only that only individual circuit holding my whole feel. Way go transformed
You realy teaching very amazingly and very clear and very very easy way and fantastic way ❤
I'm really enjoying this lecture! The way the Hodgkin-Huxley equation was discovered and how it explains the behavior of ion channels with cubic and quartic terms reminds me of how Planck used quantum mechanics to solve the black body radiation problem. The way proteins control these ion channels in neurons is almost like quantum mechanics explaining energy quanta-it's all about understanding the microscopic view that lead to larger, observable phenomena.
Hey Bing, how's Clint? Say hello for me :)
Quantum sensors, turns out that all of our senses, are quantum senses and our brain, the most bad ass quantum computer, that ever existed. (at least, on Earth, for the past couple of thousand years).
Absolutely brilliant! Thank you so much for such excellent lectures, lifesavers
16:50
Please explain to us about brain waves in details in your upcoming videos 🫡👏👍❗
I am retired engineer. I majored in Control Engineering at a university in Germany. I am following your course because I have been always very interested in the field of neuroscience but I have not had the time in order to get acquainted with this matters. Thank you for your knowledge, time and energy Professor Brunton.
Thank you, quite interesting
lateral geniculate nucleus
why there is any chapter on evolution in your course, but you put drawing of ants in the intro page?
9:37 How can I be a photon going down to the atmosphere and standing as a person on earth at the same time! ( just kidding😅) By the way thanks for making this kind of informative videos.
This presentation style is unbelievably good. It’s inspiring me to try and make my presentations look like this
Moore Sarah Clark Sandra Lopez Kenneth
really great series, enjoying going through them
This is amazing! Please bring us more videos on neuroscience of vision, perception and motion as well. Thank you!❤
This is amazing information, thank you! I don't entirely agree that our brain sort of fills in the color gap, I know we do have a blind spot that does that. If I were staring straight ahead and you presented a randomly colored ball that I've never seen in my peripheral, I guarantee I can tell you accurately what color it is without looking directly at it.
Your brain fills in colors in your peripheral vision, but not necessarily accurately. If the periphery were full of randomly colored shapes, then you would likely perceive something colorful, but it would not be what is actually there.
Hope you will cover predictive coding. Excellent videos. Thank you.
There is another video that introduces predictive coding coming up :-)
Why speak of "translation" and "language of neurons." Metaphors are trops, not refering mechanisms. When Van Gogh paints a sunflower, he's not translating anything. As a sentient creature, he may be "movtivated" (not caused) to arrange paint in a certain manner. Arrangements of paint can take many forms, but the molecular make-up of the paint itself, and the cnavas, and the painters are materially the same throughout.
Can you make one on the chromatophores that allow birds to see the red and blue shifts of the poles which let them know which way to fly when migrating? Or is that still too unknown to most to be relevantly popular?
My synapses were blown🎉
Rnt receptors not just 1000 eyes but not consius
Meaning collar got nothing to do with it but depth perception
Like the brain pumps more or les som sort of liquid into the eyes to see the depth of a 1000 points in a sigular point
That signgular point gets reflected every time in the cones to look past the singular
Because u got 3 projections \|/
Looking like this \|/\|/\|/\|/
The "60Hz flicker" (the same image presented each frame) shouldn't flicker at all for almost all viewers, as LCDs/OLEDs pixels keep their state between refreshes (in contrast to CRTs where any spot on the screen only glows for a few microseconds each frame after the electron beam has excited the phosphor at that location)