Complex sentence: As well as mistaking humans as imposters, cases of Capgras syndrome have arisen where patients believe that their pets have been replaced by a double Wright, B., Mindham, R., Burn, W. (1994).
Split into simpler sentences: As well as mistaking humans as imposters, cases have been reported where patients with Capgras syndrome have believed that animals have been replaced by a double. For example, Wright et al Wright, B., Mindham, R., Burn, W. (1994).