Figure 2.

Article publication trend in the last 34 years (1980–2014). In over three decades, there has been an exponential increase in the number of publications addressing all topics of interest here (i.e., CREB, learning-memory and neurogenesis), as well as publications addressing the confluence of these interrelated topics (i.e., neurogenesis-learning, CREB-learning, and CREB-neurogenesis), pointing to the scientific recognition of these topic’s mutual relevance.