Congenital analgesia is an incredibly rare genetic disorder where people feel absolutely no pain. This condition is so rare that the estimated prevalence of the disorder is 1 out of every 1 million people in the entire world. Although many may hear of this disorder and think it's 'cool' at first, it presents many dangers. People that have the disorder don't realize when they get hurt. They may persistently bite their tongue, scold themselves with hot water without realizing it, and just generally get hurt all the time and not have the senses required to know they need medical attention. At often times babies with this condition chew their lips, tongue, toes, and fingers; they can even LOSE the tips of their tongue or fingers! Children with congenital analgesia have no fear of objects such as knives or fire, they tend to walk straight into doors and 'fall down' instead of sitting down because they cannot rely on experiencing pain to guide them in learning behavior. Recently a team of researchers identified a mutated gene that may be causing the disorder called SCN11A. The mutation takes part in disrupting how the individual perceives pain. There is no cure for this disorder but researchers hope this new identification can help in creating painkillers to assist such individuals.
The psychology of Perception involves the interaction of our senses and our conscious mind. Perception is involved in every aspect of our lives as we make decisions and judgments based on what we experience. If you study diligently you will leave this course with a broad understanding of sensation and perception. From this general understanding you will be able to further investigate areas of interest by means of literature review and research on specific topics.