When someone says, "epiphenominal", I hear, "doesn't fit my theory". I'm not going to tell the brain how it works. I'm going to let the brain tell me how it works. If your theory can't explain the data, the problem is the theory, not the data.

There is no evidence that spikes alone or oscillations alone are functional. Nor can there be. They are inseparable. They both correlate with function (but can give different messages). People who think it's only spikes are ignoring basic physics and artificially pulling apart a unified syatem