The answer to first question is “Delay Cells”.
A motion detector is a gadget that identifies moving articles, especially individuals. Such a gadget is frequently incorporated as a part of a framework that automatically plays out an assignment or cautions a client of movement in a zone.
The second question is not complete; here is the complete question;
Describe what you would have to change in the cells you mentioned in (a) in order to make one of the motion detector cells fire to a “Slow” speed.
Answer is "I would lessen the measure of time it takes for the Delay Cells to flame so they will send input in the similar moment as the blue photoreceptor cell.