Saturday, December 7, 2019
Contact us    |    Advertise    |   Help    |   Cookie Policy    |   Privacy Policy    RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

Why aren't humans constantly hallucinating ?


Posted on Sunday, 21 July, 2019 | Comment icon 13 comments

Why do our brains not become distracted by randomly misfired neurons ? Image Credit: CC 2.0 Andrew Mason
A fascinating new study has highlighted just how sensitive, yet finely tuned the human brain actually is.
In a recent experiment, scientists used a technique known as optogenetics - which involves the insertion of light-sensitive genes in to an animal's brain - to trigger hallucinations in mice.

Particularly surprising was the fact that, despite mice brains having millions of neurons, the researchers only had to trigger 20 of them to achieve the hallucination.

This begs the question - given that humans have exponentially more neurons than mice - why aren't we constantly experiencing hallucinations due to random misfires within the brain ?

"A mouse brain has millions of neurons; a human brain has many billions," said senior study author and neuroscientist Karl Deisseroth from Stanford University. "If just 20 or so can create a perception, then why are we not hallucinating all the time, due to spurious random activity?"
The answer, Deisseroth argues, could be that mammalian brains are a lot more finely tuned that anyone had realized, being capable of responding to a very small number of brain cells without becoming distracted by randomly misfired neurons.

It's also possible that other sensations such as emotions and memory may work in a similar way.

"We don't know how many cells it might take to trigger a more elaborate thought, sensory experience, or emotion in a person," said Deisseroth.

"But it's likely to be a surprisingly small number, given what we're seeing in the mouse."

Source: Live Science | Comments (13)

Tags: Brain

Recent comments on this story
Comment icon #4 Posted by godnodog on 21 July, 2019, 18:06
Define "hallucination", cause everyday I see some crazy ass stuff happening out there that makes me think I am some sort of an extra terrestrial 
Comment icon #5 Posted by Big Jim on 22 July, 2019, 3:54
I had the same question as the previous posters and one more.  How do you know when a mouse is hallucinating?
Comment icon #6 Posted by highdesert50 on 23 July, 2019, 3:02
Reduced to the absurd; too much hallucinating results in being eaten by a predator. Hence, unlikely to procreate and propagate the trait. As for idiots who are elected into positions of authority; well, for the half of the population that is above average in intelligence, there is the other half that is below average, and unfortunately, they vote too ;)
Comment icon #7 Posted by quiXilver on 23 July, 2019, 3:53
Humans entirely hallucinate reality. Human perception is signal interpretation,from partial information.  Not raw reception of absolute reality.   Our senses are transducers for signals from the frequencies of the world we can receive signals from; these signals are only partial information (hence the need for notions such as dark matter to account for all that lies beyond our ken) and these signals are interpreted.  The interpretations vary by individual, but share flavors of similiarity in Culture, Tribe and Social influences.  How we interpret the signals of perception determines our experi... [More]
Comment icon #8 Posted by Inversion5 on 23 July, 2019, 14:04
Dreaming is hallucinating, i figure. So everyone hallucinates at one point in their lives or often. Some people might actually be dreaming while awake. So maybe the world is a dream to them. There are so many different people out there, I can't imagine this is not the case. Would be so cool to find someone like that though. I do remember a documentary of a guy that never slept, like literally had not slept for 30 years, or something like that, and all he did was organize things. His entire huge apartment was nothing but filing cabinets and cubbyholes. Could be related. Also: "We don't know how... [More]
Comment icon #9 Posted by Calibeliever on 23 July, 2019, 17:22
Merrily merrily merrily merrily, life is but a dream.
Comment icon #10 Posted by Desertrat56 on 23 July, 2019, 17:56
I was thinking the same thing, only without the stoner voice, considering how different people have different perspectives and assumptions about the same things.  Even multiple witnesses have different versions of an incident based  on their bias, preoccupation, what they pay attention to.  For example, I could identify someone by their shoes but might not remember the color of their eyes.  
Comment icon #11 Posted by Farmer77 on 24 July, 2019, 17:45
Wait........you guys arent?
Comment icon #12 Posted by TripGun on 26 July, 2019, 16:15
All peoples personalities are just figments of their imagination - interperceptually speaking of course.
Comment icon #13 Posted by ThereWeAreThen on 5 August, 2019, 23:10
Well there are millions of people who believe in the paranormal so yes. There are humans constantly hallucinating. 


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

6607433
276155
182850

 
'Bigfoot chases car' video emerges in Russia
12-6-2019
Footage showing a car being pursued by an unknown creature has been doing the rounds on social media.
Banana duct-taped to a wall sells for $120,000
12-6-2019
Modern art connoisseurs have taken to a rather tongue-in-cheek exhibit at a Miami Beach art festival this week.
Quantum physicist describes alien encounter
12-6-2019
Quantum computing expert Deep Prasad has come forward with a rather extraordinary story.
Planet found orbiting white dwarf in world first
12-5-2019
Astronomers have discovered a huge planet orbiting the burnt-out husk of a star that was once like the Sun.
Stories & Experiences
My reptilian encounter
11-24-2019 | Ireland and Australia
 
The day I found out I am immortal
11-24-2019 | Hialeah
 
Recent activity in my home
11-24-2019 | Kansas City, MO USA
 
The houndsman
10-26-2019 | Michigan, USA
 
Birthday balloon
10-26-2019 | Usa
 
Devil man in a suit
10-26-2019 | Ohio
 
I accidentally called myself ?
9-28-2019 | United States
 
Giant wolf in my basement
9-28-2019 | Connecticut
 
I saw a shadow figure...
9-26-2019 | Australia
 
A haunting in Iowa
9-26-2019 | Central City, Iowa
 

         More stories | Send us your story
Featured Videos
Gallery icon 
What is the biocentric universe theory ?
Posted 12-6-2019 | 3 comments
TheoryInk takes a look at the concepts behind the idea of a biocentric universe.
 
Interview with Sophia the robot
Posted 11-21-2019 | 12 comments
The popular robot recently made an appearance on 'This Morning' in the UK.
 
Coke and butane
Posted 11-17-2019 | 0 comments
The Slo Mo Guys return with another dangerous slow-motion stunt.
 
Origins of the Kraken
Posted 11-15-2019 | 0 comments
A look at the origin of the legendary multi-tentacled sea monster.
 
How lasers work with Neil deGrasse Tyson
Posted 11-11-2019 | 0 comments
The popular astrophysicist is joined by comedian Chuck Nice.
 
 View: More videos
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.712 Unexplained-Mysteries.com (c) 2001-2019
Terms   |   Privacy Policy   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ