Ib Biology Hl

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  • Topic: Nervous system, Distance, Reaction time
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  • Published : November 24, 2012
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Is the neural pathway significantly longer for a visual stimulus or a sound stimulus (or a pressure stimulus)

Data collection and processing

Table 1a: Data collected by John Rha and Arthur Hamilton by dropping ruler for calculation of length of the neural pathways (Visual, Auditory and Sensual) Trial#| Visual| Auditory(Sound)| Sensual(Pressure)|

| (cm±0.1cm)| (cm±0.1cm)| (cm±0.1cm)|
| John| Arthur| John| Arthur| John| Arthur|
1| 43.9| 24.1| 33.1| 34.6| 50.1| 50.5|
2| 73.7| 45.6| 66.1| 49.2| 29.2| 75.2|
3| 47.4| 31| 80.2| 25.3| 54.4| 41|
4| 32| 24.7| 23.1| 39.6| 25.6| 47.4|
5| 23.5| 29.1| 32.9| 35.1| 26.2| 30.8|
6| 38.6| 27.6| 47.6| 34.7| 40.6| 49.5|
7| 37.9| 20.9| 56| 21.7| 41.5| 40.2|
8| 28.2| 22.7| 24| 57| 29.1| 62|
9| 39.9| 62| 43.6| 87.2| 30.6| 35.4|
10| 23.6| 30.5| 49.3| 44.4| 44.2| 78.2|
11| 58.4| 26.2| 66.8| 24.2| 41.9| 84.3|
12| 40| 32.7| 21.1| 36.1| 14.2| 21|
13| 55.5| 20.2| 61.7| 15.1| 61| 41.3|
14| 39.6| 32.2| 46.9| 28.58| 65| 24.8|
15| 46.1| 18.1| 61.7| 55| 45.9| 22.3|

Table 1b: Calculations of the reaction times the meter stick fell Trial#| Visual| Auditory(Sound)| Sensual(Pressure)|
| John| Arthur| John| Arthur| John| Arthur|
1| 0.299319| 0.221774| 0.259906| 0.26573| 0.319758| 0.321032| 2| 0.387825| 0.305059| 0.367285| 0.316872| 0.244114| 0.391752| 3| 0.311022| 0.251526| 0.404566| 0.227228| 0.333197| 0.289264| 4| 0.255551| 0.224518| 0.217124| 0.284282| 0.228571| 0.311022| 5| 0.218996| 0.243696| 0.259119| 0.267643| 0.231234| 0.250713| 6| 0.28067| 0.237332| 0.311677| 0.266113| 0.287849| 0.317837| 7| 0.278113| 0.206526| 0.338062| 0.210442| 0.291022| 0.286428| 8| 0.239898| 0.215236| 0.221313| 0.341067| 0.243696| 0.355711| 9| 0.285357| 0.355711| 0.298294| 0.421852| 0.249898| 0.268784| 10| 0.219461|...
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