Spatial working memory deficits in obsessive compulsive disorder are associated with excessive engagement of the medial frontal cortex. - Nic J. A. van der Wee; Nick F. Ramsey; Johan M. Jansma; Damiaan Denys; Harold J. G. M. van Megen; Herman G. M. Westenberg; René S. Kahn (NeuroImage, 2003)