Perceptions vary from person to person to person, so, I will be delving into the various aspects of sensory and psychological perception. My introduction begins with the sensory system and input through the five senses. The stimulus/input is always the same but perceptions are what give things new meaning to us. Our brain utilizes many techniques for categorizing and classifying incoming information based on previous experiences. Our brain is also able to sort out important information from all of the hodgepodge we are bombarded with on a daily basis.