Final answer:
Patients with hippocampal damage but intact amygdala will develop normal fear responses but won't have explicit memory of the association between stimuli and outcomes due to the amygdala's role in emotional learning and the hippocampus in declarative memory.
Step-by-step explanation:
Patients with hippocampal damage but intact amygdala develop normal fear conditioning but do not develop explicit knowledge of the relationship between a harmless visual stimulus and an electric shock. This is because the amygdala is involved in processing emotional reactions and fear conditioning, while the hippocampus is associated with declarative and episodic memory as well as recognition memory. Individuals with amygdala damage are unable to establish the fear response, indicating its crucial role in emotional learning.
Learn more about Fear Conditioning and Brain Structures