There are numerous stimuli needed to be able to pick up physical stimuli. The smallest amount of stimulation needed to allow us to detect sensory input is called the absolute threshold. Secondly, the smallest contrast that is noticed between sensory outputs is known as the difference threshold. The difference threshold increases as the stimulus becomes stronger. In this section of the chapter it is recognized that objects in the physical world have no color and objects reflect light waves created by specific lengths. What happens is that our visual systems describe those waves as different colors. Light waves transform into information that allows our brain to process. The cells in our eyes respond to certain wavelengths and transform the physical signal into information that allows the brain to interpret. While you are driving and you come across a green light. Your brain will respond and tell you, “Go.” Our brains are interesting when it comes to processing perception. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay The perception process includes five specific stages. Sight, touch, smell, hearing and taste. This process also includes proprioception, this creates the ability to pick up changes from the way bodies are positioned along with our body movements. The perception process is a sequence of events that begins with the environment, moving to the perception of the stimulus followed by an action towards the response to the stimulus. The process is ongoing, but we never focus on the amount of time needed to think about the process while it is happening. There are many steps during the perception process that play a significant role. That said, environmental stimulus, expected stimulus, retinal image, transduction, neural processing, perception, recognition, and action enable perception processing. Phases and sequences play a significant role when it comes to perception processing. These stages allow us to select, organize and interpret information in different ways. Please note: this is just an example. Get a custom article from our expert writers now. Get a Custom Essay Insights I chose the topic of how our senses detect physical stimuli and how our brain processes perception because there is a lot of useful information that can be taken and learned from. I think this topic is interesting because it allows us to fully understand how our senses detect physical stimuli and how our brain processes perception. This topic was significant to me because it explains the certain amount of stimulation that requires us to be able to detect physical stimuli. Along with the stages and understanding how our brain processes information. These are all key factors that are important to us as humans.