Astral Planes @die-eule - Tumblr Blog

One of lab people/engineers is this sweet elderly man who has been doing ridiculous amounts of work on my data doing entropy analysis. I’m very thankful for him.

ALSO, THIS IS FOR EVERYONE WHO TOLD ME I SHOULD MY OWN DATA PROCESSING FOR MY MASTER’S PROJECT. SORRY I DON’T HAVE AN ENGINEERING DEGREE OR THE KNOWLEDGE TO PERFORM ENTROPY ANALYSIS SO I NEEDED AN ENGINEER TO HELP ME. FUCK YOU.

die-eule

Good lord, who hurt me back then? Who told me to do my own data processing/entropy analysis?

copingnurse-deactivated20240217

When my patient is loudly and pleasantly confused...

3dbabyfromallymcbeal

lizclimo

feministism

jointphotographicexportsgroup-d

they: wyd me:

pinejaysong

you know what’s even better than a guilty pleasure?

a smug indulgence. tell yourself, “i’m gonna do this thing because i like it, and there’s nothing you can do to make me feel bad about it!” eat that cake! read that romance novel! be free!!!

savethebeesbby

bdsm stands for

Bees Do So Much for the environment

neurosciencestuff

Waking Up Is Hard to Do: Reversing Deep Unconsciousness

Philosophers have pondered the nature of consciousness for thousands of years. In the 21st century, the debate over how the brain gives rise to our everyday experience continues to puzzle scientists.

To help, researchers in the University of Michigan Medical School Center for Consciousness Science are working to identify areas of the brain that help us wake up, a basic building block of everyday consciousness.

In the search for what controls our overall level of consciousness, researchers have traditionally focused on structures in the lower part of the brain. These structures include the brain stem, which regulates vital functions like breathing, blood pressure and heartbeat; the hypothalamus, which is involved in sleep and controlling bodily functions; and the thalamus, which relays information from the senses. George Mashour, M.D., Ph.D., professor in the Department of Anesthesiology and director of the center, decided to look at areas of the cortex, the upper part of the brain, for its ability to control the level of consciousness.

Recent research in nonhuman primates provides evidence that the prefrontal cortex has a switchboardlike relationship with other areas of the brain, helping to ignite awareness of visual information.

“There has been a debate that has recently intensified as to whether or not the prefrontal cortex — versus areas farther back — plays a role in generating conscious experience. We thought that we’d target some of these different areas in the front and back of the brain to see which ones had the ability to control the level of consciousness,” he says.

The key to ignition?

Because anesthesia is used to temporarily eliminate conscious experience during medical procedures, it provides the perfect opportunity to test hypotheses about consciousness.

First author Mashour and lead author Dinesh Pal, Ph.D., also of the Department of Anesthesiology, anesthetized rats with a common drug used in humans. “We wanted to see what had the causal power to take an unconscious brain receiving ongoing anesthesia and wake it up,” says Pal. To test this, they targeted two neurotransmitters that are associated with wakefulness: acetylcholine and norepinephrine.

The team exposed the anesthetized rats’ prefrontal and parietal cortex to drugs that ramped up the effect of the neurotransmitters and measured their brain activity and behavior. When exposed to an acetylcholine-receptor activator, their brain waves, normally slow during sleep and anesthesia, sped up. But rats were able to start behaving as though they were awake only with prefrontal cortex stimulation, all while continuing to receive the same level of anesthesia that is used clinically for surgery in humans. These findings were published in the journal Current Biology.

In a recent commentary in Science, Mashour discussed how the prefrontal cortex helps us access relevant information coming into the brain for consciousness and cognition. Importantly, this area of the brain seems to be functionally “offline” during a variety of anesthetic states. Mashour says their study in Current Biology “suggests that the prefrontal cortex also has the potential to play a role in coordinating the level of consciousness, possibly through the cholinergic system.”

Clinically, these results could be explored for applications in people with disorders of consciousness, such as coma or vegetative states.

“Let’s say you have a patient in a coma: Could the prefrontal cortex be a site that is modulated to help coordinate events to help improve level of consciousness?” Mashour asks. The implications of this possibility are significant because of the relative accessibility of the prefrontal cortex.

“It’s very difficult and dangerous to directly intervene at the level of arousal centers in the brain stem because of its location, small size and nearby vital functions. Maybe the prefrontal cortex is an accessible gateway to some of those other arousal systems that could be leveraged in a clinical setting outside of anesthesia,” he says.

fun-o-physics

just-shower-thoughts

Medically inducing a coma is basically turning a human being off and on again.

boluscoffeestat-deactivated2020

Ok I’m sorry but this fucking grinds my gears. We do not just “place” people in medically induced comas. This is not a common thing and I wish the public would understand that and stop shitting a brick when my patient is on 10 of propofol with a breathing tube following commands thinking that they’re comatose or dead when they’re intubated for airway protection. We sedate people and when we sedate them, our goal is to have them be arousable enough to wake up and follow commands. If the patient is THAT sedated that they’re “comatose”, you need to back off on the sedation or consider a different medication for sedation. The very slim percentage of patients that we do actually have to sedate that much would theoretically be placed in a “medically induced coma”. Some of these conditions include status epilepticus (constant seizures), profound ICP issues requiring a barbituate coma, and ARDS (just to name a few). We’re not just putting every Tom, Dick, and Sally in a coma.

#real facts

mushroomhater95-deactivated2016

me when buying something over $10: do i need this? do i need any material objects? will this matter when i face the great abyss?

hodlmyvodka

It’s a pine fall day today in Russia.

officialtomselleck-deactivated2

Things just happen in Russia in a unique way that I’m not sure can ever be explained. Like how a fucking meteor landed in the middle of the Russian wilderness and resulted in the equivalent of a nuclear bomb going off but no one really even noticed.