Mental functions

Mental functions and cognitive processes can be used interchangeably to mean such functions or processes as perception?, introspection?, memory, imagination?, conception?, belief?, reasoning?, volition?, and emotion?--in other words, all the different things that we can do with our minds. A specific instance of engaging in a cognitive process is a mental event. The event of perceiving City Hall is, of course, different from the entire process, or faculty, of perception--one's ability to perceive things. In other words, in instance of perceiving is different from the ability that makes it possible.