The leading cause of death among adults worldwide is heart disease.

Over 25 days of being tested for retention of a spatial discrimination task, mice showed:

a. Increased activity in the hippocampus and increased activity in the cortex b. Increased activity in the hippocampus and decreased activity in the cortex c. Decreased activity in the hippocampus and increased activity in the cortex d. Decreased activity in the hippocampus and decreased activity in the cortex

The primary input to the hippocampus is from the

a. granule cells of field CA2. b. nucleus accumbens. c. pyramidal cells of field CA1. d. granule cells of the dentate gyrus. e. entorhinal cortex.