Background: One of reasons why something can be considered alive is that it can sense and respond to its environment. The speed at which this response occurs can be very important in an organism’s life. For example, it literally takes a blink of an eye for a frog to stick it’s tongue out, catch its prey, and return it to its mouth. The fly only has a split second to respond to the tongue stimulus to avoid being eaten! You are also a living thing and having a fast reaction time is important in your life as well. Saving an incoming soccer ball from entering the goal, ducking for cover from a falling book, and removing your hand from a hot stove are just a few examples.
Purpose: In this experiment, you will use the steps of the scientific method to test your visual, auditory, and tactile reflex rate to see which of your senses has the fastest stimulus/response time.