CasqueAbove
Chameleon Enthusiast
I found this paper and I think it might be very telling. I say I think, because it is a scientific research paper written for professionals, and I am still going through trying to understand it.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4280901/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4280901/