Memory is often affected in patients with brain tumors. These changes may be caused by the tumor itself and/or by the surgery, radiation, and/or chemotherapy used to treat it. The effects on short-term memory appear to be more noticeable than those on long-term memory.

In talking about memory and memory processes, we use many different terms:
Short-term and Long-term: Short-term memory is where we store information we need to remember for just a few seconds or minutes. Long-term memory is for information that is stored for more than just a few minutes.
Encoding/Acquisition: The process by which information is gathered, organized, and processed for storage.
Consolidation: The process by which information is moved from short-term to long-term memory.
Retrieval: The process by which previously learned information is remembered or brought into awareness.

Cause
In a patient with a brain tumor, memory problems can be caused either by the tumor itself or the surgery, radiation, and/or chemotherapy used to treat it. Fatigue, which is common in patients with brain tumors, can make these issues even worse.

Management
Below are some suggestions which may help to improve memory:
Get plenty of sleep.
Eat regular, well balanced meals and drink plenty of liquids.
Adjust your surroundings to enhance your attention span-some people perform better in a quiet, distraction-free