Which structure is central to forming and storing explicit memories?

• A. Hippocampus
• B. Amygdala
• C. Thalamus
• D. Basal ganglia

Answer: (A)

Explicit memories—facts and events you can consciously recall—depend on the hippocampus for encoding and consolidation. This structure in the medial temporal lobe binds the features of experiences into a cohesive memory trace and helps transfer it to long-term storage in distributed cortical networks. When the hippocampus is damaged, people often experience anterograde amnesia, struggling to form new explicit memories while older, nondeclarative memories may remain intact.

The amygdala plays a modulatory role, boosting consolidation for emotionally charged experiences, but it is not the central site for creating explicit memories. The thalamus acts mainly as a relay station in memory networks, and the basal ganglia are key for procedural or habit learning rather than explicit memory formation. So, the structure most central to forming and storing explicit memories is the hippocampus.