A tiny part of your brain may still listen under anesthesia | The findings suggest that consciousness may not be required for complex brain tasks

1092 points by Science_News 15 days ago on reddit | 39 comments

Munzo101 | 15 days ago

I went under once and the surgeon asked what music I liked, he said he would continue playing it through the surgery because it helps his patients. Guess he might’ve been onto something?

Glockamoli | 15 days ago

How do you know he actually played it throughout?

autism_and_lemonade | 15 days ago

here’s a study about ketamine, which granted is a particular anesthetic, that shows that music decreases the effect it has on cardiac function

Glockamoli | 15 days ago

I'm not debating the effect

It's entirely possible the surgeon asks what music he likes and plays it before the patient is under then turns it off during the procedure

You still get the calming effect while going under and the patient is under the belief it was on the entire time

fractalife | 15 days ago

Another way of saying you don't believe they placebo controlled the study.

Glockamoli | 15 days ago

I have not said anything regarding the study

Just that the commentor I replied to could have been getting a benefit from their pre-surgery state, I have no way to know if the surgeon actually kept playing it or not, even the commentor doesn't unless the surgery was recorded

fractalife | 15 days ago

You just described the placebo effect.

Glockamoli | 15 days ago

>Another way of saying you don't believe they placebo controlled the study.

This is what you said, see that word at the end there?

I have never referred to the study and I quite frankly do not care about it, only the anecdote the commentor presented

TheCh0rt | 14 days ago

Well also maybe the surgeon just lines to hear different kinds of music while he works that he may not know about or normally listen to which is cool I think

Spadeykins | 15 days ago

Because it helps.

AmericasHomeboy | 15 days ago

With enough sleep deprivation, your brain will function without you being conscious. You’d be in an I between state where what your brain is dreaming seems real.

p8nt_junkie | 15 days ago

Step to the Wu, Doc

[OP] Science_News | 15 days ago

General anesthesia shuts off conscious awareness, but what do our brains process while we’re under?

Individual neurons in a brain region known for its role in memory consolidation can detect unexpected sounds, decode the nuances of language and even predict upcoming word types in a sentence, all while a patient is fully anesthetized, researchers report May 6 in Nature.

Scientists have been gathering mounting evidence that even when unconscious, our brains can track certain aspects of speech. “The field was already moving toward a more nuanced picture [of what the unconscious brain can do], but this study pushes the boundary considerably further,” says Athena Akrami, a neuroscientist at University College London who was not involved with the research.

Read more here and the research article here.

broen13 | 15 days ago

After 4 surgeries I'm definitely in the "I got to 97 counting backwards and woke in the room" crew.

0impulsecontrol | 15 days ago

I legit thought they were still prepping me for surgery when I woke up (in recovery)

fucked up for two days and there was this after glow for a couple weeks that made me understand why people abuse the shit

broen13 | 15 days ago

I popped awake instantly on a Friday afternoon at 3:30. I immediately grabbed my clothes and said "Let's get out of here I'm not staying over the weekend" Didn't have any other issues besides pain from surgery.

sudo-joe | 15 days ago

I really enjoyed the sleep frankly. One of the better sleep sessions I remember in quite a few years.

cityshepherd | 15 days ago

Woke up in the recovery room, or in the surgery room?

broen13 | 15 days ago

Recovery every time.

djspacebunny | 15 days ago

I got to the 80's before they could knock me out. It's very difficult to knock me out.

giveupmymembership | 15 days ago

Are you a redhead by chance?

djspacebunny | 15 days ago

No, but I know about the redhead fuckery.

Brrdock | 15 days ago

Arguably how our brain and CNS runs our body, our instincts etc. is way more complex than anything we could ever hope to do consciously

digginghistoryup | 15 days ago

I remember going under anesthesia multiple times when I was a kid for ear surgeries.

I have strange experiences where I felt like I was floating above my body, right below the ceiling of the OR.

I remember being able to make out details about things said by the doctors or even stranger, where the doctors were. For example I could get an idea of how many doctors were on my left side and right side.

Zealousideal_Sir5421 | 15 days ago

You shouldn’t be aware of anything so if you need surgery again it’s worth mentioning to them before. You might have the gene that makes red heads need more anaesthetics. Although since you were a kid it’s obviously possible it wasn’t meant to be actual general anesthesia or you’re remembering dreams you had during recovery

digginghistoryup | 15 days ago

My father is a red head.

Also from my understanding, children are given ketamine for shorter operations, which are known to cause Autoscopic Phenomenon

Confident_Jump_9085 | 15 days ago

I had a dream while under anesthesia. The doctors said I should not have but I did. I was with my uncle in his truck and it was sunny and I saw trees going by. Still remember it 22 years later.

Spunge14 | 15 days ago

That is super weird. I wonder if you dozed off when you came out of anesthesia. Come to think of it, I'm surprised that doesn't happen more often.

cureandthecause | 15 days ago

After waking from anesthesia, it felt like all of my emotions caught up to me and came bursting out at once that would have otherwise been present during the surgery... Like I could feel them cutting away and everything, all purged into a few seconds once becoming awake.

Open_Examination_591 | 15 days ago

They use sedated women for free gynecological training if you dont know to cross it out on intake. That explains how so many of them got PTSD from being assaulted while sedated.

Real_politics46 | 15 days ago

Yeah they use everyone for medical classes without saying a god damn thing. Pretty fucked.

Open_Examination_591 | 14 days ago

Ironically the reason the students don't have to use each other is because it was deemed humiliating and embarrassing. I guess the patience integrity and feelings just don't matter to them even as students.

They sure do start teaching them how to abuse privilege early.

verdant_squirrel | 15 days ago

Yeah I didn't know Niki Minaj's repertoire before I went under, that's for sure, but I woke up with her songs stuck in my head and knowing the lyrics by heart. To be fair, I was "higher than a motherfker"

LostSnafu | 15 days ago

Damn, they're trying to figure out how to make us work even while unconscious now.

M1chaelSc4rn | 15 days ago

Uh oh

Neil-erio | 15 days ago

this can explain near death experience too

_mattyjoe | 15 days ago

As evidenced by how people drive today.

rddman | 15 days ago

...or listening is not a complex brain task.

Intelligent-Band-852 | 14 days ago

I am a paraplegic so have had anesthesia many times and I definitely recall hearing things during surgery. It’s all a blur though, fortunately I have never woken up in the middle of a surgery that still gives me nightmares. I had a leg amputation a decade or so ago and the night prior I watched a documentary about just that thing, bad idea. I also was given Saw on DVD as a gift but couldn’t watch certain scenes, yeah complex trauma is fun.