The Retrograde Amnesia Associated with Closed-Head Injury Has Been Frequently

Multiple Choice

The retrograde amnesia associated with closed-head injury has been frequently studied in laboratory animals by

A) hitting them on the head with a little rubber hammer.
B) administering acetylcholine agonists.
C) administering electroconvulsive shock.
D) using multiple-trial learning tests that must be learned over several days.
E) both B and D