The authors use fear conditioning and active ensemble labeling (TetTag mouse and IEG IHC) in the CA1 and DG of the dorsal hippocampus to study how memory recall engages previously active neurons across these subregions.
The ways memories are recalled in everyday situations typically differ from how recall is studied in the lab, and a complete understanding of memory must encompass how memory is actually used.
Form is how memory works.
How memory works: a conjecture.
The electrical patterns showed that in order to make the correct choice, the mouse had to rely on short-term memory—recalling how many dots it saw on one side a few seconds prior and then convert this memory into motor action, or the action of turning left or right.
Importantly, the properties of these mechanisms suggest a set of rules that profoundly affect how memories are stored and recalled.
The study was part of an investigation aimed at learning how memories are created, stored and recalled in a part of the brain called the hippocampus.
The goal of this research is to better understand how the environmental context influences fear memory recall.
To investigate how the neurons involved in memory formation responded to subsequent memory recall, we compared the reactivation rates to the corresponding activation rates.
We describe how these stochastic neurodynamical effects can be analyzed, and their importance in many aspects of brain function, including decision-making, memory recall, short-term memory, and attention.
