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Investigating Reaction Times For this investigation we worked in pairs and measured each others reaction times using the ruler method. By this, we dropped the ruler from the subjects hand, and measured how quickly they caught it. The subjects were randomly selected, but the group was large enough to conclude that the results were reliable. The test was carried out a few times on each person, then the results were compared. I belive that the younger subjects will have better reaction times, because their hand/eye co-ordination is better. To catch the ruler, our eyes had to be triggered by the movement and send electrical signals, called impulses, along the sensory neurones (nerve cells) to the Cerebrum (the part of the brain which controls conciuos actions and our senses). In turn, the Cerebrum sends impulses along the motor nerve cells to the muscles which control your finger and thumb. We carried out...

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