Koichiro Kajikawa

The paper shows that learning in the hippocampus produces orthogonalized neural representations resembling a state machine, captured by HMMs and biologically plausible networks, but not by gradient-based models.

The paper investigates CA3 intracellular dynamics during awake ripples in mice, finding that inhibition in CA3 is critical for ripple generation, while DG and CA1 show depolarization transients before ripples.