Perceived finger position relative to pre-test across time for the different groups. RohdeMarieke Di LucaMassimiliano O. ErnstMarc 2013 <p>There is always a drift when synchronous stroking occurs. Surprisingly, there is also proprioceptive drift if asynchronous stroking is interrupted regularly. Error bars: s.e.m. nā€Š=ā€Š10 in all three groups, dotted line indicates 5 cm line for readability, Nā€Š=ā€Š30.</p>