http://singularityhub.com/tag/fmri/
The film "Signs" perfectly depicts cultivation theory, where lengthy exposure to television impacts one's worldview, as the dramatic depiction of crop circles on television is connected to extraterrestrial influence and a resultant chaos across the world. Much of the film is centered around the family room, and later the pantry where the television is located. From an alien stalking a child's birthday party to news reports of crop circles appearing in numerous domestic areas, the Hess family immediately feels vulnerable. The television causes the children of the family to attend to only their worst fears and the unknown, versus Mr. Hess's attempts to instill optimism.
The cultivation theory entails an adoption of a perception held by mass media and presented to viewers. It may result in a common idea of reality and subsequently influences people's emotions, beliefs, and expectations of the world. The unknowns of life are changed to a sense of consistency and likelihoods, where what is common on television becomes common to an individual who may have zero connection to the situation.
"Sign's" depicts what happens when long exposure to television changes reality. The Hess family struggles to separate the doomed world the news depicts to their own reality. Faith and reason contrast the helpless negativity the television spreads. This film climaxes when personal conviction must conquer a "cultivated" obstruction to reality.