Dissecting human reaction time
Complex reaction times have been extensively studied and broken down into underlying processing stages. Sternberg (1969) [Acta Psychologica, 30, 276-315.] was one of the first systematic attempts at using reaction time to understanding cognitive processing. For simple reaction times (like responding to a brief sound or light), Botwinick (1966) [Journal of Experimental Psychology, 71(1), 9-15.] split reaction time into pre-motor and motor components and found the motor component accounted for 50 ms of a simple reaction time task that took about 250 ms. I am not aware of anyone who has split apart the remaining 200 ms into addiitional stages.