Processes in perception.

After watching the two videos below, discuss the role of higher-level or "cognitive" processes in perception. Then describe a situation in which you initially thought you saw or heard something, but then realized that your initial perception was in error. What was the role of bottom-up and top-down processing in this process of first having an incorrect perception and then realizing what was actually there?
Support your belief and use specific examples. You may refer to your assigned Week 1 readings or draw on scholarly online resources. The latter must be academic in nature (e.g. from the APUS online library) and not from pop culture and/or commercial websites, blogs, opinion sites, etc.
Sensation and Perception: Crash Course Psychology #5 https://www.youtube.com/watch?v=unWnZvXJH2o
Cognition - How Your Mind Can Amaze and Betray You: Crash Course Psychology #15 https://www.youtube.com/watch?v=R-sVnmmw6WY