Spyridon Chavlis

TL;DR: CA1 network modeling showed that desynchronized inputs can impair the precision and stability of CA1 place cells, demonstrating that temporally precise intrahippocampal communication is critical for spatial processing.

TL;DR: It is found that mossy cells are significantly more active than dentate granule cells in vivo, exhibit spatial tuning during head-fixed spatial navigation, and undergo robust remapping of their spatial representations in response to contextual manipulation.

TL;DR: Fast, targeted, threeD two-photon calcium imaging coupled with immunohistochemistry-based molecular identification is used to retrospectively map in vivo activity onto multiple classes of interneurons in the mouse hippocampal area CA1 during head-fixed exploration and goal-directed learning, providing new insights into the collective organization of local inhibitory circuits supporting navigational and mnemonic functions of the hippocampus.

TL;DR: This model suggests that the presence of GC dendrites is associated with high pattern separation efficiency while their atrophy leads to increased excitability and performance impairments, which can be rescued by restoring GC sparsity to control levels through various manipulations.