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Reaction time

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Reaction time- gender and age This research is based on the reflexes in boys and girls of different age groups. It will look at the difference in reaction times between genders and different age groups. Introduction The quickest reaction times have the simplest neural circuit, e.g. tap the knee and the leg moves. The tap excites receptors in the quadriceps muscle at the front of the thigh and these send the signals back to lumbar part of the spinal cord. A direct connection is made to the motor neurons that innervate the quadriceps muscle and causes it to contract, making the leg move forward. This takes about 30ms, the receptors take 1-2 ms to respond and another 1-2 ms is needed for the connections in the spinal cord to operate. The remaining time, is time taken up for the nerve impulses to travel from muscle to spinal cord and back again. The participants undertaking the traffic light test have no ready-made circuit to do the job, like in the case of tapping the knee. Instead, the motor system prepares in advance the instructions for the response and all attention is concentrated on the light. ...read more.


Also the online testing provides more accurate data as no human error is involved in the procedure. The complete the online exercise each student had to go to the website www.google.com and search for the 'reaction time test'. The first link that appeared from the search was the Traffic light test (http://getyourwebsitehere.com/jswb/rttest01.html). The traffic light test is based on the reaction time due to the visual stimulus. The test measures the reaction time based on how quickly participant can click on an icon as the traffic light graphic turns green. However the test is not made so simple. It is not made so simple. It is confusing the mind, as the button to press to start the exercise is red (as shows on the left). The icon which is pressed by the students is green when the light is still red (as shows on the bottom left). On the left, completed test is shown. Each student under took this exercise three times, to give more reliable results. Results Year 7 Male Reaction Time Average 1st 2nd 3rd average 1 0.25930 0.29400 0.31890 0.29073 2 0.20000 0.20920 0.32180 0.24367 3 0.25000 0.29700 0.26500 0.27067 4 0.25300 0.46880 0.23120 0.31767 ...read more.


0.25000 0.27600 2 0.25000 0.18700 0.20300 0.21333 3 0.54750 0.26550 0.26650 0.35983 4 0.48400 0.45300 0.20300 0.38000 5 0.00000 average 0.30729 Female 1st 2nd 3rd average 1 0.21600 0.37500 0.20300 0.26467 2 0.27320 0.27560 0.18020 0.24300 3 0.25520 0.25580 0.25410 0.25503 4 0.31080 0.28320 0.21860 0.27087 5 0.25000 0.21000 0.28000 0.24667 average 0.25605 Year 13 Male 1st 2nd 3rd average 1 0.30880 0.24320 0.25900 0.27033 2 0.22180 0.19360 0.18140 0.19893 3 0.18800 0.20300 0.18800 0.19300 4 0.25940 0.27220 0.39380 0.30847 5 0.27180 0.29360 0.17460 0.24667 average 0.24348 Female 1st 2nd 3rd average 1 1.21150 0.33100 0.30620 0.61623 2 0.25900 0.24040 0.21220 0.23720 3 0.26800 0.22100 0.21200 0.23367 4 0.24040 0.28460 0.23440 0.25313 5 0.22480 0.23760 0.19360 0.21867 average 0.31178 Overall results MALE FEMALE YEAR average time (sec) YEAR average time (sec) 7 0.27201 7 0.37969 8 0.99663 8 0.32713 9 0.55923 9 0.62789 10 0.25115 10 0.40763 11 0.20877 11 0.58141 12 0.30729 12 0.25605 13 0.24268 13 0.31178 Average 0.405394286 Average 0.413082857 This results show the over all male and female results. This part of the research supports the hypothesis as the male participants have faster reaction time than female participants. ?? ?? ?? ?? A2 Biology ...read more.

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