Anumber of studies, including training on a contrast discrimination task (Furmanski et al. 2004) and a texture discrimination task (TDT) (Schwartz et al. 2002, Walker et al. 2005, Yotsumoto et al. 2008), have found that VPL is associated with increases in the blood-oxygenation-leveldependent (BOLD) signal in the region of V1 in humans that corresponds to the location of the trained stimulus. It has been found thatwithin the first few weeks of training, performance on TDT increased and the BOLD signal in the trained region of V1 increased