motivated edits

A motivated edit is when a scene cuts an changes to a different scene, or introduces another object or person that wasn't in the last scene. This technique is used in a very sly way so that the audience doesn't know that it has even happened. These edits are used mostly in horror films for example, when you hear a random sound when there is no other sound in the scene, the camera and character will look towards the sound but there will be nothing to be seen. The tension it built up as the camera is moving in this scene. 
 an edit from the camera turning towards that direction.

An example is shown below from 1:40 to 2:10.