Sheena Josselyn is a Canadian neuroscientist and a full professor of psychology and physiology at Hospital for Sick Children and The University of Toronto.

[5] In her Masters, Josselyn published two first author papers, the first studying the modulatory effects of adenosine on dopamine in the striatum[6] and the second on the interaction between neuropeptide Y and antipsychotics in the nucleus accumbens.

[5] Under the mentorship of Dr. Franco Vaccarino, Josselyn studied the effects of CCKB and CCKA modulation on associative learning and published multiple first author papers.

[5] Josselyn helped discover the importance of CREB in memory formation and retrieval[12] which led to probing the molecular mechanisms and biological purpose of forgetting.

[3][15] Josselyn's multidisciplinary approach to tackling questions regarding memories led her to several prestigious awards and recognitions including becoming a member of the Royal Society of Canada in 2018 for her research.