Daniel Kim 12-3-12 HBS‚ period 1 Reaction time experiment Caffeine and Reaction Time 1) Identify the Problem or Question How does the consumption of caffeine affect the reaction time of the nervous system? 2) Introduction Purpose of the experiment: To identify the whether or not caffeine increases or decreases the reaction time of the nervous system. In our experiment‚ we have decided to use all the “cases” which will test how fast a signal from our brain will be sent to our
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subtraction technique to time the different mental processes that the brain goes through when faced with different tasks. Donders performed experiments using reaction time tasks in 1868. His was the first attempt to analyze and measure the component processes of a simple task. 1. a simple reaction time task - e.g. you are seated in front of a panel that contains a light bulb and a response button. When the light comes on‚ you must press the button. 2. a choice reaction time task - e.g. you are
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| Ethanol: Pharmacokinetics and CNS effects | | | | | | | Mean | Range | Standard deviation | Peak BAC (mg/100ml) | 70.91 | 46 | 12.54 | Time of peak BAC (mins) | 44.32 | 75 | 21.85 | Peak subjective intoxication level | 4.9 | 5.5 | 1.94 | Time to peak intoxication (mins) | 59.09 | 120 | 35.99 | Rate of elimination (mg/100mL/h) | 16.20 | 12.66 | 4.49 | 1. 2. Comment on the variability in BAC and intoxication scores There are many factors which affect the
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travel in this time? a = (28-0m/s)/20s = 1.4 m/s/s x = 1/2at2 = ½(1.4)(20)2= 280m 2. At t = 0 a car has a speed of 30 m/s. After 6 s‚ its speed is 15 m/s. What is its average acceleration during this time interval? a = (15-30m/s)/6s = -2.5m/s/s 3. A bear spies some honey and takes off from rest‚ accelerating at a rate of 2.0 m/s2. If the honey is 10 m away‚ how fast will his snout be going at the moment of ecstasy? Hint: Solve for time to go 10m then use time to find velocity
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storyline of the film Modern Times revolves around the two characters‚ a factory worker and street rogue‚ played by Charlie Chaplin and Goddard respectively‚ who fall short to take part into the modern and mechanized world. There were several themes clearly emphasized in the beginning of the film; the workers are portrayed as mere followers‚ no distinctiveness‚ merely considered as moving parts in the economic system. The two main characters were seen as being non-conformant. Time as shown in the beginning
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Dominance on Neuromuscular Reaction Time Abstract Neuromuscular reaction time may be influenced by hand dominance. This study examined whether hand dominance could influence the measurements of neuromuscular response by catching a meter stick in free-fall. A total of 9 subjects were examined with respect to hand dominance. The mean of the neuromuscular reaction time of the dominant and non-dominant hand was 268 mm and 314 mm‚ respectfully. The neuromuscular reaction time of the dominant hand was
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Finger Response Times to Visual‚ Auditory and Tactile Modality Stimuli By Christopher Watts 9MLO Introduction: The time it takes from when an individual responds to a certain stimulus that they have detected is commonly referred to as reaction time. This delay in time is caused by the amount of time it takes information to go through the nervous system and then towards your brain. Your brain acts as the processor of your body and translates these informative signals so that your body can act
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Lab : Iodine-starch Clock Reaction Pre-lab: Before the lab was conducted‚ the concentration of the Iodate ions to be in the mixture made by dissolving specific volumes of solution A with a constant concentration and water was calculated using the dissolution formula: C1V1 = C2V2 Sample Calculation 1: Concentration of the Iodate ions: For mixture 1: C2 = C1V1/ V2 = (0.020mol/L) x (0.003L)/(0.01L) = 0.006mol/L The same calculations were used in the calculating of the
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Experiment 1 Word Association Test I. Objective To determine which type of association test (the free association or the partially controlled association test) will elicit a shorter reaction time‚ and that which will elicit more response words. II. Review of Related Literature According to a related study‚ word association is a way in which words come to be associated with each other and which influence the learning and remembering of words (Richards et al‚ 1985). It is used in psycholinguistics
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| 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
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