Partial directed coherence: twenty years on some history and an appraisal / Luiz A. Baccalá; Koichi Sameshima
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© 2021, The Author(s), under exclusive licence to Springer–Verlag GmbH Germany, part of Springer Nature.Here while we reminisce about how partial directed coherence was proposed, its motivation and evolution, we take the opportunity to relate it to some of its kin quantities and some of its offspring. Emphasis is placed on our development of asymptotic criteria to place it as a reliable investigation tool, where the connectivity detection problem is completely solved as opposed to what we call the characterization problem. We end by musing over some points now on our wishlist.
