Synonym and Antonym

Read the following passage and find the synonym and antonym words.

The leading causes of amnesia健忘症 are either physical or psychological.

In antergrade amnesia, the subject is unable to recall the events that occur after a shock or an injury to the brain; however, past memories will not be lost.

In retrograde amnesia, the patient is capable of recalling events that occur after the trauma; interestingly enough, the information stored before the shock, is lost and cannot be retrieved.

In paraamnesia, established memories are contorted. In psychogenic fugue, the subject may venture into a new lifestyle, trying to repress memories which lead to trepidation. The events happening during psychogenic fugue are non-retrievable. Nonetheless, the experiences that happened before the onset can be recovered.

1. What is the topic of the passage?

2.What are the synonyms or antonym of the following words you will find in the passage.
a. subject ________________________
b. injury ________________________
c. amnesia _______________________
d. unable ________________________
e. happen ________________________
f. however _______________________