Mangina, Constantine A. and Beuzeron-Mangina, Helen and Casarotto, Silvia and Chiarenza, Giuseppe A. and Pietrini, Pietro and Ricciardi, Emiliano Modulation of specific brain activity by the perceptual analysis of very subtle geometrical relationships of the Mangina-Test stimuli: a functional magnetic resonance imaging (fMRI) investigation in young healthy adults. International Journal of Psychophysiology, 73 (2). 157 - 163. ISSN 0167-8760 (2009)