Dynamic subcortical blood flow during male sexual activity with ecological validity: A perfusion fMRI study. - Janniko R. Georgiadis; Michael J. Farrell; Ruud Boessen; Derek A. Denton; Maria Gavrilescu; Rudie Kortekaas; Remco J. Renken; Johannes M. Hoogduin; Gary F. Egan (NeuroImage, 2010)