The background changes to black and white, with a picture of Mr. Herrera at the center.
But they are better than East Asians at recalling an object when the background changes, perhaps because the latter focus on context.
To her surprise, though, the magnetic resonance scans revealed that the part of the brain lost among those who failed to perceive sarcasm was not in the left hemisphere of the brain, which specializes in language and social interactions, but in a part of the right hemisphere previously identified as important only to detecting contextual background changes in visual tests.
Along the way Hitchcock also throws in a bizarre, partly animated dream sequence and a startling scene in which, as the lovers kiss, the camera pans 360 degrees around them and the background changes from a small hotel room to the stables of an old Spanish mission, where they had kissed once before.
To adapt to background changes, learning approaches have proven useful.
We assume that the background changes are consistent with a random probability distribution.
If we used a small value for α, the RBI did not quickly reflect background changes.
If sudden background changes occurred, the results may have been erroneous.
If a value for α was large, the RBI quickly reflected background changes.
Also, it should be able to quickly adapt to background changes (for example starting and stopping of vehicles).
These two assumptions enable our method to handle both sudden and gradual background changes better than existing methods.
