If you are interested in applying as a Masters student, I will be accepting applications this winter (2017) to start in the 2018/2019 school year. Information for prospective students can be found here. Prospective students should apply through Cognitive, Developmental, and Brain Sciences.
Please note that in the application, the Cognitive, Developmental, and Brain Sciences program will be listed as multiple streams when it asks you to decide. You can select either the Developmental, Behaviour and Cognitive Neuroscience, or Cognition selections, as these areas will be merged next year.
If you are considering applying I strongly recommend getting in touch via email prior to applying (rsteve28 at uwo.ca).