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Alien hand syndrome sounds like something from a B-grade horror movie, but it's a real condition. You could be completely at the mercy of your own, renegade hand.
You're napping on a breezy Sunday afternoon in the hammock of your backyard, enjoying the peace and quiet of your suburban utopia. Slowly, your left hand eases up, wraps around your neck and you awake to find your own hand locked in a kung-fu grip on your throat. You pry it loose with your other hand, finger by finger, until it relents and you're left there staring at a hand that suddenly doesn't feel like your own. While it sounds like something from a B-grade horror movie, it's actually a very odd and very real medical condition known as "alien hand syndrome" (AHS).
Research has been sparse over the years due to the scarcity of cases, but a study by a team of Swiss doctors in July 2007 has shed new light on AHS. The doctors conducted functioning magnetic resonance imaging (fMRI) tests on a victim of AHS to determine what sections of the brain showed activity during planned and unplanned movements. They found that planned movements originated in the frontal lobe before being sent to the motor strip, while the alien movements showed no activity in the frontal lobe -- the movements originated from the motor strip itself. Furthermore, the signal remained in the motor strip without sending a message back to the frontal lobe, leaving victims unaware of their own movements. While the motor strip has finally been successfully singled out as the center of activity, it's still not known what triggers the signals to begin with, leaving the condition as a mysterious medical curiosity
Originally posted by defcon5
Interesting subject, I take it you watched Dr Strangelove recently…
To me it seems very similar to split brain patients on some levels. These are people who have damage to their corpus callosum, and there is a lack of communication between the hemispheres of the brain. I guess it gives a whole new meaning to “the left hand not knowing what the right hand is doing” at any rate.
most commonly after a radical procedure that treats extreme cases of epilepsy. When the callosum is damaged, it leaves the different sections of the brain disconnected and unable to speak to each other
Originally posted by defcon5
In case you’ve never seen it this is the disorder that Peter Sellers was playing up to such comic effect in Dr Strangelove:
You should also check into the split brain stuff, you’ll most likely enjoy that as well.
Originally posted by SaadAdam
what happens then it cant connect and interact what interacts with the parts to make it do the right thing this leaves the person or the area not controlled by the proper task? could this be were the evil takes place? or it could be a thought or something.
Think of the corpus callosum as the brain's e-mail server, a bundle of message sending nerves that connect and share information with the two hemispheres. Alien hand syndrome is a result of damage to these nerves. This damage most often occurs in brain aneurysms, stroke patients and those with infections of the brain, but can also manifest as a side effect of brain surgery, most commonly after a radical procedure that treats extreme cases of epilepsy. When the callosum is damaged, it leaves the different sections of the brain disconnected and unable to speak to each other -- its e-mail is permanently down. With AHS, one hand functions normally, carrying out purposeful tasks without signaling the other hand, resulting in a limb that can act on its own, sometimes in opposition to the functioning side.
Originally posted by SaadAdam
lol wierd and funny video preety old also what year is that around the 70s 60?
Originally posted by defcon5
Each lobe controls different things, and when the network wiring between them is damaged you can get random results, scrambled messages, each side thinking a different thing, etc. Basically there is no coordination between the different sides of the brain which control different things and thought processes.
For example if you showed the person a picture of an orange to the eye that is on the same side as the lobe that interprets taste (they cross, so it would be wired to the wrong side of the brain for taste), them asked them to describe the taste of what they see, they could not do it. If you change the picture to the other eye and show them the same picture, they could describe the taste as normal.
Hope that helps some.
Originally posted by orionthehunter
This sounds like what happened to the main character in the second Army of Darkness movie. His hand became possessed and tried to kill him. Then he took a chainsaw and cut it off I believe if I remember it right. I thought the whole thing was made up by Hollywood. The idea that your hand could become possessed by itself that is. The hand continuing to attack the original owner after it was cut off I know was made up by Hollywood.
Never knew this could happen. Thanks for sharing.
Originally posted by SaadAdami seen that movie its a comedy no?