Miller_LabReport_Lab8.docx

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Dec 6, 2023

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Motor Control and Learning (KNES 385) – Laboratory #8 (assignment #7) Laboratory 8 – The neural command Data analysis and discussion Student name: ______Madison Miller____ Section:___0101__ Instruction to generate and submit the lab report Please read and follow carefully the instructions below The present document states the questions you will include on your Response sheet for Lab 8. Please remember that this lab report is an individual assignment. You will turn in your Response Sheet in PDF format and your finished Excel sheet in .xlxs format to Canvas before your next lab period begins. You must turn in both documents to get credit for the assignment. Failure to submit both before the deadline will result in a grade of 0. Your work will include inputting and processing the data given to you in the Lab 8-Data.xlsx file on Canvas to answer the questions on the Lab 8 Assignment document. Most of the time you will have to create figures (graphs) or a data table in addition to your written responses. For data processing and calculations you will use the Data file 8 to input the data collected and derive the required measures. For the calculation questions, please include the appropriate Excel tables into the provided Response sheet. Any figures will also be created in the Excel file. For the questions asking for figures, please include each figure as a picture with appropriates captions, legends and labels. • Once the work is done and you are ready to turn it in the response document into a PDF file. The PDF must be titled with the last name and lab number such as “Lastname_LabReport_LabX.pdf” (for example the Lab 8 Response sheet for the student John Doe will be “Doe_LabReport_Lab8.pdf”). Use ‘_’ instead of spaces. • In addition, the Excel file should be renamed “Lastname_ExcelCalc_LabX.xlsx” (for example the Lab 1 report for the same student John Doe will be “Doe_ExcelCalc_Lab8.xlsx”). • Then, once both your PDF file and Excel file are ready to be submitted, please upload them to ELMS and submit all documents as one submission before your next lab period. • Double check that the correct files were submitted. Submitting the incorrect documents will result in a grade of 0 for the assignment. If you have any questions, please contact your TA. 1

Motor Control and Learning (KNES 385) – Laboratory #8 (assignment #7) 1/ Data analysis (12 points) Question #1-Include Figure 1 and caption here; complete Table 1 in your Excel sheet Points: 2 2

Motor Control and Learning (KNES 385) – Laboratory #8 (assignment #7) Figure 1: Reveals the relationship between the conditions of normal velocity (NV) and fast velocity (FV) when there is no mass (NoM) and there is mass (WM). The X axis represents the Time (seconds) for each condition with/ without mass. The Y axis relates to the velocity value for each condition as having mass or no mass for NV and FV. NOTE: the values on the y-axis are expected to be decimal format (ex. -0.2). Question #2- Include Table 3 here; complete Tables 2 and 3 in your Excel sheet Points: 3 Question #3- Include Figure 2 and caption here Points: 2 3

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Motor Control and Learning (KNES 385) – Laboratory #8 (assignment #7) Figure 2: Represents the relationship between the speed conditions of normal velocity and fast velocity of participants when there was no mass (lifting just arm) and when there was mass (lifting heavy weight). The X axis presents the different conditions without mass (NoM) and with mass (WM) for both the normal velocity (NV) and fast velocity (FV). The Y axis relates to the average ARV values for both conditions with/ without mass. Question #4 –Complete Tables 4 and 5 in your Excel sheet and include ONLY Table 5 here Points: 3 Question #5 – Include Figure 3 and caption here Points: 2 4

Motor Control and Learning (KNES 385) – Laboratory #8 (assignment #7) Figure 3: Represents the relationship between the speed conditions of normal velocity and fast velocity of participants when there was no mass (lifting just arm) and when there was mass (lifting heavy weight). The X axis presents the different conditions without mass (NoM) and with mass (WM) for both the normal velocity (NV) and fast velocity (FV). The Y axis relates to the average RMS values for both conditions with/ without mass. 2/ Discussion of the results (8 points) Question #6- 2-3 sentence response Points: 2 As comparing the changes of ARV and RMS between the conditions of normal velocity with no mass (NV-NM) and fast velocity with mass (FV-WM) there are evident differences in the direction of the two EMG components. To start, within ARV, the NV-NM obtains a value of roughly 4.6, and FV-WM holds a value of nearly 7.2. However, as going into RMS there is an increase in number with NV-NM obtaining a value of roughly 5.1, and FV-WM holding a value of nearly 8.5. Considering this, the two forms show that the ARV had a decreasing direction as measuring the average absolute deviation of the velocities was lower (ranging from 4 to 7), while the RMS had an increasing direction due to the average squared deviation of the velocities being higher (ranging from 5 to 8). Question #7 – 1-2 sentence response Points: 1.5 The experimental condition that had the lowest EMG RMS was Normal Velocity condition without mass. This is because as having an average velocity speed it will not force the muscle to generate extra force than what’s currently available as there is a wide time gap/length in allowing for the process to be taken slow and steady. Moreover, as not having mass then the muscle doesn’t need to activate any more force than it already has due to there being no heavy weight to lift. Therefore, a low velocity and low mass will result in a lower EMG RMS value. 5

Motor Control and Learning (KNES 385) – Laboratory #8 (assignment #7) Question #8- 1-2 sentence response Points: 1.5 The experimental condition that had the highest EMG RMS was the Fast Velocity condition with mass. This is because as a faster velocity causes the muscle to generate more force in a limited amount of time it will then lead to a major increase in muscle activation that increases the value. Similarly, as having mass, it causes the muscles to activate more force in order to lift the heavy weight. Thus, high velocity and high mass will conclude in a higher EMG RMS value. Question #9 – 1-2 sentence response Points: 1.5 It can be examined that mass can affect the EMG RMS as larger muscles are expected to move heavier objects in which an increase in muscle activation to lift a heavier object will result in a higher EMG RMS value. As for velocity, it can affect the EMG RMS in completing movements at a faster speed. For example, when speed increases it enables the muscle to create more force in limited time which in turn will cause an increase in the muscles activation ability leading to an higher EMG RMS value. Question #10-At least 3 sentences Points: 1.5 Ideally, compared to healthy individuals, it could be expected that an ALS patient would have a much lower RMS. This is because ALS is a condition that as degeneration of motor neurons increases then loss of voluntary muscle control will occur leading to other issues like muscle weakness, muscle stiffness, etc. Meanwhile, since having a higher RMS value indicates greater muscle activity for an average healthy individual, then an patient with ALS would have a low RMS value as a result of less motor units in the muscle that causes less overall electrical activity in the muscle. Altogether, this would make sense with the weakness already occurring in the muscles. 6

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