Hey guys.

first of all it is a theoretical project, so no animals or something were hurt.

So we have 6 rats. At the beginning we measure the pain-threshold as a baseline.
After that the rats receive a chronic injury and a electrode in implanted in a certain brain area.

Now we have three consecutive days of measurement. Each day there is a pre-test for pain threshold, then stimulation and then the post test.

the data set looks like this.
In the analysis the baseline can be ignored (will just be used as a visual representation in a graph).
I'm not interested in the changes of pain-threshold over time. Just: is there a difference in pain threshold caused by stimulation (difference from pre to post test).
I never worked with more than one pre- post test, so i'm kinda stuck

Thank you guys,