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Bing Wen Brunton
United States
Приєднався 13 вер 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
Visual Computations and Circuits | Receptive Fields | Sparse Coding Hypothesis
Neurons connected to each other in circuits can perform specific computations. Looking at these circuits gives us clues about what they are doing, and understanding these computations helps us understand why we see (or not see) the way that we do.
We introduce each neuron's "receptive field" as a way neuroscientists describe what patterns of photons that neuron responds to: what image makes a visual neuron most excited? Depending on the neuron and where it is in the visual pathway, its receptive field may be a donut, a vertical stripe, a face with two eyes and a mouth, or even a movie of upwards movement. The mathematical operation corresponding to these circuit computation is known as a "convolution," which directly inspired convolutional neural networks in computer vision and AI. Beyond vision, the concept of a receptive field applies to other sensory and motor modalities as well.
Finally, we motivate the sparse coding hypothesis, which postulates that visual circuits have such receptive fields because they are the most efficient way to represent natural images.
Playlist for all videos in series: ua-cam.com/play/PLqgZEQsU_8E0l1P9bKR6yKOKPMpoJ_tLR.html
Professor Bing Wen Brunton
www.bingbrunton.com
We introduce each neuron's "receptive field" as a way neuroscientists describe what patterns of photons that neuron responds to: what image makes a visual neuron most excited? Depending on the neuron and where it is in the visual pathway, its receptive field may be a donut, a vertical stripe, a face with two eyes and a mouth, or even a movie of upwards movement. The mathematical operation corresponding to these circuit computation is known as a "convolution," which directly inspired convolutional neural networks in computer vision and AI. Beyond vision, the concept of a receptive field applies to other sensory and motor modalities as well.
Finally, we motivate the sparse coding hypothesis, which postulates that visual circuits have such receptive fields because they are the most efficient way to represent natural images.
Playlist for all videos in series: ua-cam.com/play/PLqgZEQsU_8E0l1P9bKR6yKOKPMpoJ_tLR.html
Professor Bing Wen Brunton
www.bingbrunton.com
Переглядів: 4 576
Відео
Color vision | Rod and cone cells in the retina
Переглядів 4,8 тис.3 місяці тому
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...
Visual perception | Retina, photoreceptors, and rhodopsin
Переглядів 55 тис.4 місяці тому
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
Переглядів 2,2 тис.4 місяці тому
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
Переглядів 4 тис.4 місяці тому
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
Переглядів 6 тис.Рік тому
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
Переглядів 3,6 тис.Рік тому
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
Переглядів 3,2 тис.Рік тому
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
Переглядів 4,6 тис.Рік тому
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
Переглядів 4,8 тис.Рік тому
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
Переглядів 4,1 тис.Рік тому
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
Переглядів 6 тис.Рік тому
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
Переглядів 6 тис.Рік тому
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
Переглядів 4,4 тис.Рік тому
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
Переглядів 7 тис.Рік тому
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
Переглядів 7 тис.Рік тому
Active Properties of Neurons | Responses to Current | Cable Equation in Axon Conduction
Why do neurons have an electric charge? | Nernst Potential | Resting Potential of Neurons
Переглядів 14 тис.Рік тому
Why do neurons have an electric charge? | Nernst Potential | Resting Potential of Neurons
Animal Electricity | The Neuron Doctrine
Переглядів 11 тис.Рік тому
Animal Electricity | The Neuron Doctrine
Intro to Neuroscience, Overview and goals
Переглядів 45 тис.Рік тому
Intro to Neuroscience, Overview and goals
Data Visualization: Storytelling with Data
Переглядів 15 тис.5 років тому
Data Visualization: Storytelling with Data
Sparse Sensor Placement Optimization for Classification (SSPOC)
Переглядів 11 тис.8 років тому
Sparse Sensor Placement Optimization for Classification (SSPOC)
Very useful and easy to follow
Thank you for this great course! You, Steve and your team are doing a great job! I heard that the reason for having the retina kind of inside out is that the pigment epithelium is actually required to transform 11-trans retinal back to 11-cis form, so "used" molecules are transferred to the pigment epithelium and "refurbished" ones are transferred back to photoreceptors. Another function of the pigment epithelium is the garbage collection. Each disk in a row or a cone lives only for a few days, new disks push old ones towards pigment epithelium for utilization. So this seemingly bad architecture is actually a smart one :) Octopuses use another kind of photoreceptors called melanopsin, it isomerizes when a photon hits and then re-isomerizes when another photon hits, so it doesn't need the pigment epithelium's help. That’s why they can have another retina layout. There are some tradeoffs, I suppose. I find this explanation reasonable and very interesting. I got it from the course of Medical Neurobiology by Peggy Mason (University of Chicago), it’s available on youtube and I certainly recommend it.
10.5 Photoreceptors ua-cam.com/video/pMu8z844KYk/v-deo.htmlsi=7anT43T3z2snBRKY 10.8 Non-perceptual Visual Functions ua-cam.com/video/prtJ0oPubjU/v-deo.htmlsi=izOruw0151blovpO&t=212
Well, I'm here to study some neuroscience to help me better understand machine learning as a subfield of machine learning, neural network is based upon neuroscience
Bat brain is not visible, understood according to the Western Holy Bible King James Version!🧠✝️☯️🌌🦇🇨🇳☮️🟰🐍
You are so enthusiastic & serious at the same time explaining everything pertaining neurons I can "and will" continue watching even though i haven't process a lot yet. To get a better understanding of my Epilepsy. I know what is going on. Excessive electric charges. But I hope your teaching kind of understand the how & why! And more. Thank you!💜
Having Epilepsy, I "very basically 😂" do know neurons transmit electricity threw synapses. And it increases exponentially during a seizure. That's about it. But how will this RNS device detect the increase & slow it down to prevent the seizure is a complete mystery to me. I am now addicted to your channel & knowledge! I want to know more about my disability but feel like I will never be able to learn enough! Thank you for the interest & inspiration!💜
The illusion demonstration blew my mind & I'm just getting started! WOW!
Information on neuroscience became a learning addiction for me today bc I'm having an RNS device implanted in 2 weeks. I'm 47 & wish I took the time to learn about the brain & how it works in high school. The brain is amazing. Like an infinite learning experience! Thank you.🫵🏾
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Valuable information from an intelligent, beautiful woman. What could be better than that?
Thank you for posting this on UA-cam! It’s a privilege to have such content widely available.
Just feeling an Electric pulse device at the highest output. Tingling in the brain has reached across the temporal lobe to the inside feeling of the cerebellum. 🧠 📟🖱 like Algebra yet another class would be necessary.
Sleep deprivation helps during recovery from brain trauma☯️🦇🟰💊.
☮️☯️🦇
This is a super cool lecture series. Highly recommended for anybody interested in systems / cognitive neuroscience.
Asprin was actually created in Ancient China TCM traditional chinese medicine. (,Marco polo) took a wallet back to Europe as the Dark Age gothic age ended and their Rreninassauce Era began ,as areminder there were thousand of Europeans doing from the bobo plauge!☯️🇨🇳🐉✝️🔮🦇☯️🌌
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Please mam i need your help...!
Its me Shahid Rasool from the Valley i.e KASHMIR...!
Goodmorning dear mam,i am also interested in neurosciences.But i have found an equation in physics Mass.Length is equal to 1.Dear mam can you help me in interpreting this equation from all angles please mam please...!
☯️🦇☮️
I saw bio tech on cctv I am a implant victim and long story precursor of Bluetooth...what I mean is blue tooth was designed out of my Body implant...!Walter Reid Medical Center Andrew's Air Base Maryland Joint Base, Navy Army Marraien.... Very advanced for its time Analog to digital
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Using cold Outside as a method of ice body edema,. a tub of ice as a football sports trainer instructs. Sit in a tub with little water, nude then the(fill with ice trainer is Female girls}🏈
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The same God that sent Me sent the Christ of Israel. 20th Century present 2024 year of the Dragon Fu Zi Tian Lia 1960s I arrived in China Very Royal Dynasty family, . Long story short time in the USA was a plot by USA government with jap. help. I swear to Buddah NOrthern Shaolin 🦇☯️🧛♂️🌺☃️🎄☮️✝️🌌🇨🇳🔮
Happen before when I played football... (1989) Present 2024Year of the Dragon I ICHING reads divine, use drugs EPS device messager... No help in the USA by White and threatening in an emergency room in a hospital as years past as "I will tell all not to help you and u know y"! Now (superpowers must take affect) ☯️🌌✝️☮️🎄🎁☃️🌺🧛♂️☯️🦇
🎼☯️🐉➕️🐍🟰🦇🟰💲😂 Twelve years of overcoming a brain injury by kicks in the head by the police. They" peohate my people on "a walk back home in a New Jersey community where I own a house....By the way Chinese 🇨🇳
🎼☯️🐉➕️🐍🟰🦇🟰💲😂 Twelve years of overcoming a brain injury by kicks in the head by the police. They" peohate my people on "a walk back home in a New Jersey community where I own a house....By the way Chinese 🇨🇳
How to shape-shift after brain trauma..... Fu natural ability something as a coma!☯️🌌🦇🇨🇳 Heaven Super Natural Superpower!
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"why are we special" - a perfect example of the original "beg the question" (before youtube decided it just means "raise a question". Lightboard studios... and digital watches! Carefully observing wild animals (even fish in the ocean) reveals incredible complexity, social communication, planning. We just like to talk about ourselves more than other animals. (Neuroscience *is* amazing though)
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A question, are these slides available as PPT or PDF, please?
Are there any hand outs of the ppt files please?
I haven't gone through it myself, but I have always heard that it is not the individual molecules that scatter the blue, but the statistical fluctuation in density of the air. It is definitely Rayleigh scattering. The red sunset is because the blue has already been scattered out in its long trip through the air.
Amazing work! Steve brunton level work.
Does the same circuits arise in auditory processing?
“Basics chemistry of organic molecules”
So we can basically genetically engineer ourselves a biological fiber optics transceiver directly into the brain. Neat ! 😅
Surgeon general advising naloxone as standard care, being everywhere present. Meanwhile goes dining with the Sackler family who poured the crap into society for profit in the first place. The biggest criminals wear suits and come on tv !
I believe it's the shorter the wavelength is the geater the frequency.?
correction: 'only humans can be told to lay still in a tube' should be 'only humans can be told to lie still in a tube'.