Answer:
Left Hippocampus
Explanation:
Hippocampus play a very vital role in the brain in term of memory and how knowledge are been received.
The hippocampus is located in the inner folds of the bottom middle section of the brain.
If one or both parts of the hippocampus are damaged or are hurt in an accident, the person involved may experience a loss of memory.
The left hippocampus encode verbal which is the reason Colin was unable to remember verbal information because the left hippocampus was affected due to the head injury he had.