Sustained Attention in a Counting Task: Normal Performance and Functional Neuroanatomy. - Felipe M. Ortuño; Natalia Ojeda; Javier Arbizu; Pilar Lopez; Josep María Martí-Climent; Iván Peñuelas; Salvador Cervera (NeuroImage, 2002)

Dysfunctional supplementary motor area implication during attention and time estimation tasks in schizophrenia: a PET-O15 water study. - Felipe M. Ortuño; Pilar Lopez; Natalia Ojeda; Salvador Cervera (NeuroImage, 2005)