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Change in reaction times due to alcohol consumption.

Extracts from this document...

Introduction

HYPOTHESIS INTOXICATION will slow down your reaction time, as the amount of alcohol consumed increases, reaction time will increase. (Your body will take longer to respond) BIOLOGICAL KNOWLEADE REACTION TIME The experiment tests how long it takes the brain to translate visual information (falling ruler) into your voluntary (or conscious) motor commands and actions (grasping finger movements) that lead to the ruler being caught. The shorter the time, the faster your reactions. That's if you were paying attention in the first place! Indeed practice specifically affects the 'associative centers' in the brain, so that you can respond faster to what's happening in your visual world. The flow of information along the 'visual' and 'motor' nerve pathways is relatively constant even with lots of practice. ALCOHOL CONSUMTION Alcohol is classified as a depressant because it slows down the central nervous system, causing a decrease in motor coordination, reaction time and intellectual performance. At high doses, the respiratory system slows down drastically and can cause a coma or death. Alcohol can be taken up by any body surface but is most efficiently taken up as it is usually consumed; after drinking an alcoholic beverage. Alcohol is absorbed over almost the entire length of the digestive tract. Absorption from the mouth and oesophagus (canal between mouth and stomach) is minimal. Ethanol absorption from the stomach may vary between 10 and 30 %. The remainder of the ethanol is absorbed from the duodenum and small intestine. Overall, more than 90% of all alcohol consumed is absorbed, irrespective of the presence of food in the stomach. Uptake is slowed down in the presence of food and uptake is faster-- when alcohol concentrations are higher. After uptake alcohol distributes over all body parts, specifically those parts that are highly perfused with blood, such as brain and liver. Therefore, these parts will reach high blood alcohol levels relatively quickly. Alcohol distributes through body water mainly. ...read more.

Middle

And do to lack of time I only repeated my experiment before intoxication and then 30 minutes after, rather then every 20 minutes. I also discovered that my results table wasn't going to work o I have also changed the design of that. Results Below are my results for the ruler drop test, off 5 different participants being tested after consuming between 0-5 unit of alcohol at 0 minutes and 30 minutes after consumption? Participant 1 reaction time / msec Alcohol consumption time / mins rpt1 rpt2 rpt3 rpt4 rpt5 AVERAGE 0 0 0.67 0.71 0.789 0.842 0.792 0.76 1 0 0.921 1.292 1.162 1.153 1.085 1.12 2 0 1.512 1.231 1.391 1.321 1.285 1.35 3 0 1.568 1.499 1.579 1.542 1.453 1.53 4 0 1.973 1.998 2.081 2.1 2.019 2.03 5 0 2.692 2.729 2.854 2.587 2.487 2.66 1 30 1.286 1.153 1.277 0.9 0.96 1.11 2 30 1.29 1.321 1.235 1.497 1.564 1.38 3 30 1.543 1.683 1.734 1.72 3.632 2.06 4 30 2.045 2.045 2.2 2.176 2.091 2.11 5 30 2.97 3.028 2.842 2.855 2.671 2.87 PARTICIPANT 2 reaction time / msec Alcohol consumption time/mins rpt1 rpts2 rpt3 rpt4 rpt5 AVERAGE 0 0 0.903 1.012 1.101 0.842 0.793 0.93 1 0 1.257 1.348 1.472 1.12 1.072 1.25 2 0 1.465 1.351 1.638 1.462 1.56 1.49 3 0 1.925 1.824 1.658 1.734 1.748 1.78 4 0 2.473 2.012 2.172 2.091 1.987 2.15 5 0 2.543 2.752 2.965 2.952 2.828 2.81 1 30 1.342 1.479 1.462 1.218 1.38 1.38 2 30 1.628 1.472 1.83 1.598 1.547 1.62 3 30 1.82 1.932 2.041 1.909 1.75 1.89 4 30 2.571 2.482 2.672 2.473 2.31 2.5 5 30 2.835 3.192 2.935 2.959 2.935 2.97 PARTICIPANT 3 reaction time / msec alcohol consumption time/ mins rpt1 rpt2 rpt 3 rpt 4 rpt 5 AVERAGE 0 0 0.462 0.592 0.578 0.782 0.682 0.62 1 0 0.873 0.513 0.629 0.792 0.923 0.75 2 0 1.218 1.059 1.032 1.127 1.051 1.1 3 0 1.482 1.48 1.572 1.597 1.742 1.57 4 ...read more.

Conclusion

Although I don't think this could really account for any of the anomalies though because the anomalies were just one of readings and they weren't consistent to one person as they would have been if they hadn't of consumed as much alcohol as the other participants. Other then this I think that the experiment was conducted well, I followed my procedures as far as possible and I was happy with my results. Suggestions To expand on my Conclusions I could have done various different things, such as, more repeats, do a variety of different reaction time tests, I should of took more time, and planned my experiment better And also as I stated earlier took into account how long each participant took to drink each drink. I was aiming to do all these things in my investigation, if I had of done this my conclusion would be more detailed and defiantly more reliable as I would have got rid of the anomalies and be able to expand on my explanation. If I was to extend my study, to get a wider range of results I think that I would like to investigate what other effects alcohol has on the body. Such as does it affect heart rate, etc. or the other root I could take is to investigate what other things effect someone's reaction time, such as drugs and caffeine. Another interesting study which I would like to investigate further is to do an investigation similar to this but give each participant the same amount of alcohol but then change it so one participant hasn't eaten anything and then that each of my other participants have eaten the same thing but at different times throughout the day, and see if this has any effect on how the body absorbs the alcohol after food consumption. Then this could be modified by giving participants different types of food. For example bread. Because this is mend to absorb alcohol quicker. ?? ?? ?? ?? AS BIOLOGY THE EFFECTS OF ALCOHOL ON REACTION TIME Danielle Robinson Page 1 5/2/2007 ...read more.

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