Interest in the ontogeny of memory blossomed in the twentieth century following the initial
observations that memories from infancy and early childhood are rapidly forgotten. The intense …

… Ramsaran et al. examined hippocampal engrams in juvenile and adult mice and identified
a cascade of events that underlie the emergence of episodic-like memory precision. The …

Throughout life neurons are continuously generated in the subgranular zone of the
hippocampus. The subsequent integration of newly generated neurons alters patterns of dentate …

Miniaturized fluorescence microscopes for imaging calcium transients are a promising tool
for investigating the relationship between behavior and population‐level neuronal activity in …

Memories are supported by distributed hippocampal–thalamic–cortical networks, but the
brain regions that contribute to network activity may vary with memory age. This process of …

The brain organizes experiences into memories that guide future behavior. Hippocampal
CA1 population activity is hypothesized to reflect predictive models that contain information …

The object-in-context recognition (OiC) task [19] is a spontaneous exploration task that
serves as an index of incidental contextual learning and memory. During the test phase, rats …

… In the present study, we report four experiments that extend our developmental analysis
of OiC performance (Ramsaran et al., 2016). The first examined the effect of longer retention …

Little is understood about how engrams, sparse groups of neurons that store memories, are
formed endogenously. Here, we combined calcium imaging, activity tagging, and …

Stable neural ensembles are often thought to underlie stable learned behaviors and memory.
Recent longitudinal experiments, however, that tracked the activity of the same neurons …