Art by smbc-comics

Consciousness is often said to disappear in deep, dreamless sleep. We argue that this assumption is oversimplified. Unless dreamless sleep is defined as unconscious from the outset there are good empirical and theoretical reasons for saying that a range of different types of sleep experience, some of which are distinct from dreaming, can occur in all stages of sleep.

Pubmed Articles

Does Consciousness Disappear in Dreamless Sleep?

Sciencealert Article We Were Wrong About Consciousness Disappearing in Dreamless Sleep, Say Scientists

  • DefederateLemmyMl@feddit.nl
    link
    fedilink
    English
    arrow-up
    10
    arrow-down
    1
    ·
    1 year ago

    I’ve had general anesthesia, it was just like falling into a deep, dreamless sleep.

    What if anesthesia actually just blocks your memories and physical reactions, but you actually experience everything that happens to you in absolute terror?

    • CeeBee@lemmy.world
      link
      fedilink
      arrow-up
      10
      ·
      edit-2
      1 year ago

      What if anesthesia actually just blocks your memories and physical reactions, but you actually experience everything that happens to you in absolute terror?

      Latest studies with FMRIs and other tools have found that general anesthesia decouples the sections of the brain from each other. All the various parts of the brain stop communicating. It’s an entities different state than sleep based on the brain activity.

      Normally when we have various stimuli or are asleep, neural activity “flows” around from one section to the other. When under general anesthesia those flows are isolated and don’t connect to other sections of the brain.

      This has actually given us a huge clue as to where consciousness comes from and what makes it a thing.

      It also helps explain why going under is just lights out and no drama or anything. It’s like an off switch for the “person”.

    • kevinBLT@lemmy.world
      link
      fedilink
      arrow-up
      6
      arrow-down
      1
      ·
      1 year ago

      Thats exactly what some do, depends on the anesthetic, but it doesn’t matter because if a memory never forms it may as well not have happened.

      • DefederateLemmyMl@feddit.nl
        link
        fedilink
        English
        arrow-up
        3
        ·
        1 year ago

        if a memory never forms it may as well not have happened

        That is an interesting philosophical question.

        If suffering is not remembered, was there even suffering? And if there was, does it matter? I can think of a few counterexamples of that, for example: a killer who tortures his victim before killing them.

        • pinkdrunkenelephants@sopuli.xyz
          link
          fedilink
          arrow-up
          3
          ·
          1 year ago

          Uhh, yes and yes? What’s stopping a rapist from anesthesizing their victims before the act and using the fact that they did as an excuse to get off charges under your logic?

        • Echo Dot@feddit.uk
          link
          fedilink
          arrow-up
          1
          ·
          1 year ago

          Presumably in your scenario the victim remembers the torture though.

          In the case of general anaesthetic the memory is effectively considered to be deleted in real time. On its way through the brain it ceases to exist so it never reaches the conscious mind.