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Muscle Reflexes Lab Report

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Reflexes are involuntary movements that happened upon the body when struck in a certain area most of the time this is the way that the body does things in order to protect itself. We choose to study these reflexes and movements to understand how quickly they occur and understand exactly why the body feels it needs to protect yourself in these situations. The purpose of this experiment is to observe how quickly both the premotor and motor times are conducted by the body. Premotor is the time in between the moment of strike from the hammer in the moment of contraction of the muscles. Motor is the time it takes for the muscle contraction and angular change with the knee. My hypothesis I've had this experiment would go would be that premotor what …show more content…

The demographics of the participants were six subjects male and female whose ages ranged from 19 to 22. All six participants were hooked up in attached to the electroids, goniometer, biopac and computer. And there were five trials conducted for each subject. A second person with tap the participant on the tendon around the knee that activates the reflex and the computer picks up both the moment of impact of the knee from the hammer, the moment of contraction, and the moment of movement. The numbers given to us by the computer is it in calculated in subtracted by each other in order to find both the premotor and motor times all in …show more content…

The reaction time for the response average for the entire class of .02 milliseconds showing that the moment of being struck the tendon only needed an average of .02 milliseconds in order to start contracting and prepare for movement in order to protect itself. This information is proven to be correct and the study stated below in the citation. And their study they looked at multiple variations of how does muscle movement works part of this study is using the basics of normal hammer use. It shows a very quick almost instant promoter reaction time. The average that is shown for the motor reaction time also prove to be very quick averaging around the time of .116 milliseconds. True this time is much slower than the time of the premotor response time. This was also expected considering it was measuring the amount of time it took from the contractions to actual movement of the leg to a certain angle. That study that I used for the same reasons as premotor showed that my information is accurate and correct. Looking at the subject variability I cannot say that this information is correct, reason being is that I believe that there was an error on my part while conducting this function in Excel however based off of other results that I have seen this shows that motor does in fact have a higher amountt of time used than premotor does Some

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