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This is a Experimental Study study.

September 12, 2025Open Access

Complementary regulation of memory flexibility and stabilization by dentate gyrus granule cells and mossy cells

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Two-photon calcium imaging reveals how dentate gyrus cell types regulate memory formation, indicating a balance between stability and flexibility.

Mossy cells are crucial for stabilizing new spatial memory maps while granule cells enable flexibility in recalling past experiences.
Two-photon calcium imaging in head-fixed mice showed that inhibiting mossy cells decreases spatial stability in new environments.
Granule cell inhibition increased memory stability in familiar settings but hindered updates in new spatial representations.
This research highlights the distinct, complementary functions of dentate gyrus cell types in shaping hippocampal memory processes.

GoodSmith et al. (2025) studied this question.

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Two-photon calcium imaging reveals how dentate gyrus cell types regulate memory formation, indicating a balance between stability and flexibility.