According to textbook, neuroscience research shows that during encoding, the prefrontal cortex in older adults shows

a. lower activity.
b. overactivity.
c. pathological functioning.
d. no activity.

b. overactivity

Explanation:

Neuroscience research shows the age related differences in the prefrontal cortex. In young adults this area depend on the extend of retrieval task which requires relation to be formed among information. Older adults show high level of activity in this area as a compensatory strategy for less extensive network. During encoding, the prefrontal cortex of older adults show overactivity indicating the usual pattern of compensatory processes with age.