The shortened protein, FosB, in the reward center of the brain is altered in those suffering
from a chemical dependency. The
protein is a transcription factor in the brain which,
together with other molecules, is involved in so-called signal
transduction (transmission of stimuli to the cells). It is said to convey genetic information between the cells and also determines whether certain genes are activated or not.
Following
numerous autopsies, Austrian researchers found the modified protein in
deceased heroin addicts - suggesting cravings for the stimulus continued
after their death.
The
evidence that the modified protein lingers after death was discovered by
the Medical University of Vienna's Department of Forensic Medicine,
which examined tissue samples from the nucleus accumbens (an area of the
brain) of 15 deceased heroin addicts.
FosB
is part of the activating protein AP1, which is involved with
regulating gene expression in response to a range of stimulus, including
stress and bacterial infections.
If this protein still stimulates the brain's reward and memory centers, one could speculate that a person's memories can still be active even though the person had died. In other words, there may be a transitory state between life and death where the brain continues to function. Perhaps this is what happens to people who claim to have experienced "near death." They are clinically dead for a time, but their brain continues to function to create new memories.
There were numerous LOST theories about the show being merely a connected memory of a character or characters. But this science study sheds another potential basis for the show's unknown foundation element: if it was a memory, a dream or illusion of a person, was that person alive or dead?