Answer:
Bottom-up processing
Explanation:
Contrary to the top-down processing, the botttom-up does not require a meaning application when receiving certain information: it is understood by the person just by receiving the pure sensation through the senses.
In certain currents of psychology there´s the beleive that all cognitive learning can be explain by two possible ways: the bottom-up and the top-down processing´s. The first one, we can say, is the most "primitive one" since all it need is a sensation to "understand what is going on", while, on the other hand, the top down processing is a little more complicate, since it need´s the pure sensation and an extra meaning application from the user.
The best way to understand this is by an example: