Cynthia H. Y. Fu, Anthony R. McIntosh, Jieun Kim, Wilkin Chau, Edward T. Bullmore, Steven C. R. Williams, Garry Honey, Philip K. McGuire. Modulation of effective connectivity by cognitive demand in phonological verbal fluency. NeuroImage, 30(1):266-271, 2006. [doi]
Abstract is missing.