The Biopsychology of Consciousness

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  • čas přidán 8. 09. 2024

Komentáře • 68

  • @kimchi2780
    @kimchi2780 Před 4 lety +25

    Lots of people don't realize when you are under anesthesia you can still go into shock from pain. This is why they give you propofol and usually fentanyl because without pain medication your body will react to the pain and shock will occur quickly. The brain is so interesting.

  • @afewminutesanyway
    @afewminutesanyway Před 4 lety +21

    I’ve had seizures where I am obviously seizing but am fully conscious and can explain everything that happened as I seized. The actions of those around me etc.
    How would that work? Thanks and I hope for a response because this is such a cool topic.

    • @MrOttopants
      @MrOttopants Před 4 lety +5

      I have the same thing.
      My understanding of it is that the part of my brain responsible for time and location is seizing, but the seizure has not spread to the rest of my brain.
      Medication prevents me from having tonic clonic seizures, but from time to time when my meds are lower than normal, I'll have a partial seizure that prevents me from doing specific things.
      Location and time are almost impossible to grasp when this is happening.
      I wrote this a few years ago. Is this the kind of thing you experience?
      I have well controlled Left Temporal Lobe Epilepsy. Phenytoin controls the seizures, but I like to take as low a dose as possible. Very rarely, I will experience a seizure that is not extremely debilitating. I experience no loss of consciousness but it carries with it certain interesting characteristics which give me information about what functions of my brain are being primarily impacted.
      I share this because I would like to read it. I am never certain as to what happens in the minds of others, but it seems like this is one that I would be interested to read.
      I hope it's informative, and thought provoking.
      The assignment I gave myself-
      Describe, in detail, what it is like to have a simple partial seizure.
      Update- I feel the need to clarify here that each individual may experience something much different. In the comments, you will see a description by someone with a similar diagnosis. The experience is much different.
      It's like driving in your car towards the coast. You can't see or feel any of the coastal scenery just yet, but when you put your nose out the window, you can feel the ocean hanging, suspended in the air.
      It is imminent.
      Here we have this one dishonorable neuron. Yes, it's true that neurons are electrically excitable brain cells. But, damn, does this little fucker really have to act this way? He just starts getting too amped or something, and boom, the whole crowd begins to erupt in some sort of mutual misfiring party.
      "Woot! We are gonna shut this place down!"
      At any moment, however, the Phenytoin Anticonvulsant squad will shut THEM down.
      Making preparations.
      Dread is magnified apprehension. I feel a sense of dread. There is really nothing to be done. The only preparation to make is to feel anxious.
      A seizure like this is something that is more likely to occur in a crowded, bustling location, or in situations of stress. As a result, much of the experience is remembered through periodic images. Flashes of flesh and skin. It's like watching old security footage.
      First, there is that oncoming rush of silence we associate with a state of extreme focus. A sense of closing. When you're sleeping, and you wish to act in a dream, but you are, for some reason, completely immobilized. I wonder if it's like "loud" for the deaf.
      Next, it's as if I am a diver, or an astronaut. I have just been transported to a radically new environment. I made it. Relax. Have a look around. In a recklessly irresponsible sense, if it were a drug that did this, it might be pretty cool. One may as well enjoy the experience. It's like getting stuck in some weird town for a layover of more than a day. For some reason, the Ikea in this town here looks a little different.
      Neural Tourism.
      But, the map and clocks are broken.
      The "meat" of the experience is in the apparent shutting down of any functional ability to recognize location and time in any meaningful visual sense. When we think about the places we go, we seem to carry a map of the location. Normally, I assume, the map is activated and coordinated with the visual stimulus, and there is no need to think about it.
      It's as if I'm looking at recorded video, and the video is having the problem of blinking out intermittently. The retention of this will be as a series of striking and memorable visual images, separated by some gaps.
      It always reminds me of melodic tinniness of the opening violin part to the Camper Van Beethoven song, "Tania."
      Oh, my beloved Tania
      How I long to see your face
      Photographed in fifteen second intervals
      It seems as if it is the visual areas that are experiencing unexpected and spreading dysfunction. Despite this, it is the visual images left behind which provide the most profound and memorable aspects the experience.
      Each image I recall was pasted onscreen like an informative graphic in an instructional video.
      Time is inextricably linked to location. It is time and location which are unreachable to me. A clock is nearby. The picture on the face is useless. Yes, it's 2. That much I know. Soon, it seems, I will need to renew my comprehension of time's relation to the clock. The previous moment, I was fully aware of that, but now, I move my eyes to other parts of the room to search for a secondary clue. Ah, now I remember what's happening. I still don't "feel" the time, but I'm beginning to get an idea.
      But where am I? Regardless of my familiarity with the location, the map-context connection is down. Honestly, this has happened more than once- "Sir, where's your bathroom?"
      "I don't know."
      A different time, and now the image is high def, and maximally zoomed. A tilted (artsy, huh?) green street sign- McGraw Street! Continue flailing Southward!
      If I am on my feet, I am inevitably treated to a stark and blaring image of my bed. It's not always my bed, but I know it's my bed. Just like in a dream when every object is automatically imbued with a full life of context.
      The map-context link is still down, there is no context match to that image. It comes frustratingly slowly back online. This is not the place where my bed is kept, please stop flashing that now.
      Still a different time, and this time, I stand up and begin to operate in object lesson activism mode. If it is a comfortable enough moment, I let my companion(s) know what is taking place. Verbal pacing to ward off the time. After a few moments of idle chatter, the deluge of the rolling epileptiform waves has begun to subside. This moment is washing out. It is taking the dread and the anxiety with it.
      At some point within these moments, something like exhaustion begins to emerge. The joyously misfiring neurons just don't seem to be able to carry on so crazily, anymore.
      Drowsy relief.

    • @afewminutesanyway
      @afewminutesanyway Před 4 lety +4

      MrOttopants
      Thanks for the response. A lot of what you said I can understand. I had one in my office where I felt it coming and was holding onto the sink in break room. I was seizing fully with no control of my body or anything but remember my boss begging me to stay with him and not die and my co workers all freaking out.
      I was able to tell him after everything about how he reacted and the exact words he said, but it was a weird out of body yet in body experience.

    • @MrOttopants
      @MrOttopants Před 4 lety +2

      @@afewminutesanyway When seizures were initially explained to me, the doctor said that there is an area of activity, and then it begins to spread.
      Tonic-Clonic is when someone loses consciousness, but people can have these other types of seizures that sound similar to what is going on with you.
      The epilepsy foundation
      Tonic-clonic (or grand mal) seizures: These are the most noticeable. When you have this type, your body stiffens, jerks, and shakes, and you lose consciousness. Sometimes you lose control of your bladder or bowels. They usually last 1 to 3 minutes -- if they go on longer, someone should call 911. That can lead to breathing problems or make you bite your tongue or cheek.
      Clonic seizures: Your muscles have spasms, which often make your face, neck, and arm muscles jerk rhythmically. They may last several minutes.
      Tonic seizures: The muscles in your arms, legs, or trunk tense up. These usually last less than 20 seconds and often happen when you’re asleep. But if you’re standing up at the time, you can lose your balance and fall. These are more common in people who have a type of epilepsy known as Lennox-Gastaut syndrome, though people with other types can have them, too.

  • @farhanahmed2508
    @farhanahmed2508 Před 4 lety +19

    We love you, Professor Dave! 😍

  • @psytek5099
    @psytek5099 Před 4 lety +6

    Excellently researched. Well done, my friend. I was interested in how Buddhist meditation might impact delta waves, and therefore experiences of "enlightenment", or non-self. Essentially becoming "unconscious" in meditation because of a lack of differentiation.

    • @psytek5099
      @psytek5099 Před 4 lety +6

      @@thotslayer9914 You can't destroy something that isn't there, only realise that *there's no differentiation* between self and not self.

  • @g.neelimag.neelima2079
    @g.neelimag.neelima2079 Před 4 lety +3

    I have seen your video of transcription for the first time in our class and that too without any audio!! Love your videos

  • @MrOttopants
    @MrOttopants Před 4 lety +11

    I've had about 5 known tonic clonic seizures in my life. Fortunately, medication prevents them.
    But when Dave describes an epileptic seizure as unconscious, it made me nod my head, because one moment, I was counting money, and then the next moment, I was yelling at my friends on the sidewalk that I wasn't going to the hospital.
    When I have had "auras" or partial seizures, it is a rolling process that hits the part of my brain that is responsible for time and location. I am conscious, but one part of my brain is seizing and not functional.
    It's very strange to not know how to find the bathroom in a building you've worked at for 10 years.
    That happened at least twice at a former job I had.
    Dave also says that when a patient is unconscious in a seizure that there is consistent wave activity. Even when there is not a seizure taking place, an eeg can identify that consistent epileptiform wave activity. Identifying the consistent brain waves in the otherwise chaotic activity is done in waking eeg's.

    • @38Fanda
      @38Fanda Před 4 lety +1

      thats some weird shit bro

  • @stevenb2754
    @stevenb2754 Před 3 lety +3

    "[The brain] truly is the most fascinating object in the known universe..." -- Dave's Brain

  • @KaapoKallio
    @KaapoKallio Před měsícem

    Thank you! This was very fascinating!

  • @amandeepbaghiana4510
    @amandeepbaghiana4510 Před 3 lety

    This was incredibly informative. I didn't know that we're actually making steps forward in our understanding of consciousness.

  • @DudeWhoSaysDeez
    @DudeWhoSaysDeez Před 4 lety +2

    Amazing. I love thinking about consciousness. Great video!

  • @user-rw6ui5nv5i
    @user-rw6ui5nv5i Před 7 měsíci

    The integration theory got me thinking about catatonia. In catatonia the response to the environment is so synchronized that it leaves the person unresponsive (at least in some forms of catatonia), whereas the retrieval of information remains. Both grand-mal seizures and catatonia respond to benzodiazepines (inhibiting the CNS), supporting the theory of an overly excitatory/synchronized state. I find it interesting that catatonia only compromises the response to the environment associated with consciousnesses, but the grand-mal seizure compromises both the subjective experience of consciousness, and the response the environment. But speaking of benzodiazepines, since general anesthesia and overdosages of depressants are both marked by profound inhibition of the CNS. I’m curious as to why those produce states produce unconsciousness despite being on the opposite end of the spectrum of neuronal excitation as catatonia and grand-mail seizures. I could see how overly synchronized inhibition could play a role. It seems that either too many action potentials at once or too little at once, are what produce unconsciousness. I’m curious to hear your thoughts on this.

  • @johnbeam1830
    @johnbeam1830 Před 4 lety +3

    Bravo Dr Dave!!

  • @UN1VERS3S
    @UN1VERS3S Před 3 měsíci

    The Wernicke and Fusiform lesions disables the consciousness certain abilities rather than cause it's absence or a part of it.

  • @selfelements8037
    @selfelements8037 Před 4 lety +1

    Damn now that was comprehensive. We'll have to watch it again!

  • @tom_something
    @tom_something Před 4 lety +3

    The type of "consciousness" that I think of differs from the one in this video, as my version has very few functions. It's not responsible for emotions, or associating smells to memories, or being interested in puzzles. Those are all things that could be simulated. We couldn't make android _feel_ sad, but we could teach it to know when and how to exhibit outward sadness. The only two things my version of consciousness can do, that we're aware of, is 1) take all of these emotions and memories and sensations and "experience" them, and 2) somehow broadcast its presence to our conscious mind, saying "I am here. I think I'm more than just a meat-machine."
    This is the sort of thing that we can only experience internally. You can have this intrinsic sense that you have consciousness, but with our current technology, you cannot be certain that anyone else has consciousness. Though I think it's a fair assumption that we all do.
    Anyway, my concept of consciousness is kind of a bummer because even if this consciousness indicates that there is some metaphysical (by currently available science) consciousness kernel that could persist after we die (a "soul"), I don't think it could do very much on its own. People with brain injuries or brain disorders may have trouble thinking, remembering, or experiencing emotions. If the "soul" can't assist in these functions while a person is still alive, then I don't think it can perform those functions after the physical brain dies.
    TL;DR - If there's an immortal soul in us, I don't think it's capable of remembering anything or thinking about anything after we die, since the physical brain is responsible for those functions.

    • @OutbackBoy
      @OutbackBoy Před 3 lety +1

      I understand your perspective and it is reasonable. I would encourage you to check out some near-death experiences etc. I can personally assure you from my own experience that the physical world around us is a very small part of something much grander and more meaningful. I haven't had a near-death experience but from some of the testimonies I've heard (especially from former atheists), I cannot doubt the survival of the soul / consciousness despite the death of the body and brain.

    • @tom_something
      @tom_something Před 3 lety +1

      @@OutbackBoy but how could that soul possibly retain our memories, if it can't even do that while we're alive?

    • @avatarsingularity4088
      @avatarsingularity4088 Před 3 lety

      maybe the soul is inter dimensional and can do all of it on its own once it passes

    • @tom_something
      @tom_something Před 3 lety +1

      @@avatarsingularity4088 It just doesn't seem likely. I can't summon up a reason to just assume that it can do that.

    • @atomnous
      @atomnous Před 2 lety +1

      And think about it, if consciousness is purely based on our material body, then why do we retain the continuity of our consciousness when our body is constantly changing? If we create a perfectly similar clone to use, with the same DNA structure and molecules, will they possess the same consciousness? It's unbelievable to think so. But if that's not possible, then what causes them to have different consciousness? What I can think of is the difference of objective location in physical space, the difference in perception perhaps, and how both of those develop in time. But that still doesn't explain how the experience itself exists. Is our consciousness a mere accident?
      You're right that one of the properties of consciousness seems to be unwillingness to accept that it's a mere accident.

  • @xenon244
    @xenon244 Před 4 lety +3

    I thought you can be conscious while being in a coma? Arent there alot of storys where people wake up from a coma and can tell storys of what they heard while they were in said coma?

  • @hotstixx
    @hotstixx Před 4 lety +10

    Tells us so little really.Always going to be utterly remarkable,bordering on mystical, that a lump of meat produces something like consciousness and that consciousness itself appears to resist meaning as something strange happens beyond the materialism of neuronal processes.

  • @Anonymous-pm7jf
    @Anonymous-pm7jf Před 4 lety +1

    Well said, Professor Dave.

  • @jimmyshrimbe9361
    @jimmyshrimbe9361 Před 4 lety +1

    Amazing video! Thanks!

  • @dannichols6261
    @dannichols6261 Před 5 měsíci

    2:39 Nice brain! Where did you get that picture, and do you have reference to it and other brain pics that are realistic and labeled with gyri and sulci?

  • @youtubekar15
    @youtubekar15 Před 2 lety

    thanks profesor dave for explain

  • @KingDecahedron
    @KingDecahedron Před 4 lety +1

    perhaps I'm too advanced for your videos, however I love what you are doing

    • @GornubiusFlux
      @GornubiusFlux Před 4 lety +8

      Intelligence complex much?

    • @KingDecahedron
      @KingDecahedron Před 4 lety

      @@GornubiusFlux Always, I am sorry you feel like a lesser mortal.

    • @KingDecahedron
      @KingDecahedron Před 4 lety

      @@GornubiusFlux I would love to match wits with you if you'd like. It may be an enlightening experience for you. I'm not being facetious.(that basically means full of shit)

    • @stimpy_thecat
      @stimpy_thecat Před 4 lety +3

      Haha idiot troll 😂

    • @GornubiusFlux
      @GornubiusFlux Před 4 lety +2

      @@KingDecahedron hahahahahahahahahahaha you sound like a right twat

  • @muskduh
    @muskduh Před 2 lety

    Thanks for all the videos

  • @luamfernandez6031
    @luamfernandez6031 Před 2 lety +2

    Correlation doesn't mean causation

  • @vanderburg.M
    @vanderburg.M Před 3 lety

    This is a really good tutorial!

  • @tilawatqurantv5196
    @tilawatqurantv5196 Před 4 lety +1

    Good

  • @Kitsudote
    @Kitsudote Před 3 lety +2

    I think conciseness is an emergent property of a complex enough network.

  • @MarineVet
    @MarineVet Před 4 lety +1

    Mefloquine dreams... please, make them stop! NEVER let anyone talk you into taking Mefloquine, except in an emergency situation, unless you enjoy the most twisted, realistic acid trip dreams you could ever imagine.

  • @LasseJ789
    @LasseJ789 Před 7 měsíci

    Consciousness seems to simply be "noise" in the brain, or an expression of (neural) frustration.

  • @selenezz666
    @selenezz666 Před 3 lety

    amazing!!!

  • @Freddy18w
    @Freddy18w Před 2 lety

    Many of these psychology learning opportunities lack comprehension checks...come on P.D.!

  • @preethanair1074
    @preethanair1074 Před 4 lety +3

    Make a video on corona virus

  • @Zetsuke4
    @Zetsuke4 Před 4 lety +1

    Cool

  • @theredsamuraiandi4407
    @theredsamuraiandi4407 Před 4 lety +1

    👌

  • @adammobile7149
    @adammobile7149 Před 4 lety +2

    I'm great buddhist master and machine learning guru. I know everything about nature of mind and consciousness. 💀💀💀

  • @kevy1yt
    @kevy1yt Před 4 lety

    Consciousness precedes the physical brain (and body), not the other way around as most, especially western science, believes. I think the Ancient Greeks had the best insight that the physical brain is just an ‘antenna’ translating our more ‘real’ non physical essence into a ‘lesser’ real physical experience (although physicality seems hyper-real to us, ‘obviously’ so.)

    • @James-oo1yq
      @James-oo1yq Před 4 lety +2

      Kevy You sound worried about death, don't be...as what you were like before conception' literally nothing!

    • @kevy1yt
      @kevy1yt Před 4 lety +1

      It’s hard to fathom that ultimately from a void of Nothing, Everything is experienced and believed to be totally real. How could this be? I’ve heard it said that as we get closer to paradox, we get closer to ultimate Truth. Wild to ponder.

    • @amineaboutalib
      @amineaboutalib Před 3 lety +2

      YOU believe, western science doesn't "believe"

    • @sondre5174
      @sondre5174 Před 2 lety +1

      @@amineaboutalib Yes it does. While science bases its conclusions on repeatable empirical experiments, they nonetheless end up being beliefs in the human mind. Belief is not the same as faith. Everything you consider true is ultimately a ‘belief’. Are you familiar with epistemology?

    • @UN1VERS3S
      @UN1VERS3S Před 3 měsíci

      ​@@sondre5174 science isn't the only thing we need to state something as a Truth. We have philosophy, mathematics, personal perception, etc.

  • @babarazamsucks
    @babarazamsucks Před 4 lety +1

    First!

  • @J0ermungand
    @J0ermungand Před 4 lety +1

    ok, now show us where in the brain the flat earth hallucination happens :P