I want to know if there are differences in firing rate of one neuron between two types of trials: left and right. The data are non-normal, paired and unmatched and the size of samples is different.
For example, I want to compare 15 firing rate for left trials with 11 firing rate for right trials. If I had the same size of trials, I could use Wilcoxon, but it's not the case.
Do you know what test should I choose?