The time it takes a person to respond to a command within ACL 3 is about 5 seconds. Examples of commands include: "Hold this" and "Colour this."
Within ACL 3.2, the cause and effect relationship provides an opportunity to measure an experiential response to an internal command to cause an effect on a surface. Start the stop watch after you give the direction. Press stop after the first back and forth motion.
Heart rate is another clinical measure of biological time.