Inhibition-related differences between tic-free and tic-related obsessive–compulsive disorder: evidence from the N2 and P3

Tic-related OCD (obsessive–compulsive disorder) was introduced as an OCD subtype in the DSM-5 based mainly on family and clinical data that showed differences between OCD in dependence of accompanying tics. Little is known, however, regarding neurocognitive differences between subtypes. We used the stop-signal task to examine whether differences exist in response inhibition between OCD patients without tics (n = 21), patients with tic-related...