Day 31: The End Is Near

Today, I was properly taught how to interpret the data into graphs. Turns out, I've been doing it wrong, so here are now my new, more comprehensible graphs (out of habit, I made the titles as detailed-yet-elegant as possible).

This graph illustrates the difference between the excitability values coming from the FDI (index finger) muscle. The two lines seem to be quite parallel until it reaches 1000 ms (when the Go cue appears). At 1000 ms, there exists a significant difference between the P-MEP values and the P+F-MEP values.





This graph illustrates something similar to what the above graph shows, except this is for the APB (thumb) muscle. It also shows a significant difference at 1000 ms.

• Side note: We had to disregard some data points at 1400 and 1500 ms because data become really noisy. This is due to the fact that movement occurs approximately 300-500 ms after Go cue (which flashed at 1000 ms). 

Lastly, I created a ratio graph to see where the greatest difference between P and P+F occurred. Again, the significant values were at 1000 ms (disregarding 1400 and 1500 once more).







This all indicates that the corticospinal excitability (CSE) is task-dependent at 1000 ms. The comparison of CSE between P and P+F aims at determining whether the sequence of controlling digit position followed by force application is planned similarly to controlling digit position alone, and thus, my project has reached a conclusion.