There are two types of processing, top-down, and bottom-up processing.
The difference between these is that bottom-up processing refers to the way information is processed from the smallest pieces of information (from the "bottom up"), whereas top-down refers to the way your brain applies what it knows and what it expects to perceive.
This is also a known reason of why you cannot tickle yourself, your cerebellum predicts the sensations your body will feel due to your movement, but it cannot predict the movement of others or your surroundings.
Dude good luck get a dictionary to define the words
That's all i can do, i have a lot of work to do as it is, plus 24 points is very less, no body is gonna answer if it's only 24 for this hard question. just some advice.