Which brain structure is primarily linked to forming new memories and is a part of the limbic system?

• A. Amygdala
• B. Hippocampus
• C. Cerebellum
• D. Prefrontal cortex

Answer: (B)

Memory formation within the limbic system centers on the hippocampus. This structure in the medial temporal lobe encodes new experiences, binding details like what happened, where, and when, and helps consolidate them into long-term memories. It’s the primary site for forming new declarative memories, so damage to it often leads to anterograde amnesia, where new memories can’t be formed easily.

The amygdala, while important for emotional tagging of memories and can influence how strongly memories are stored, isn’t the main site for creating new memories. The cerebellum handles motor and procedural memories, like how to ride a bike, rather than forming new declarative memories. The prefrontal cortex supports working memory and executive functions but isn’t the central structure for encoding new long-term memories.