Yes, you're probably right - it's less comfortable to turn head often in a helmet. And I also suspect that this effect may be due to a helmet suppressing or dis

Yes, you're probably right - it's less comfortable to turn head often in a helmet. And I also suspect that this effect may be due to a helmet suppressing or distorting sound transmitted via skull bones, making it harder to locate precisely the sources of sound from behind. Hence this "blindfolded" feeling, although I admit that the helmet itself is barely visible.