"Adapted from H.M. case literature; structures shown approximate." — Corkin (2002)
Damage to structure 1 (the seahorse-shaped region) most directly impairs which ability?
- A
Generating speech output
- B
Detecting facial threat cues
- C
Regulating circadian rhythms
- Dcheck_circle
Forming new explicit long-term memories
Explanation
Structure 1 is the hippocampus. Bilateral damage (as in patient H.M.) produces anterograde amnesia—an inability to consolidate new declarative memories—while older memories and procedural learning are spared.