removed hm"s hippocampus to stop seizures and resulted in loss of long term memory processing. Thinking is fine; can hold a normal conversation as long as there"s no distractions; learns new things. Task: trace star while watching hand in a mirror 10x each of the 3 days improved. Memory: the capacity of the nervous system to acquire and retain usable skills and knowledge, allowing living organisms to benefit from experience. Modal memory model: 3 stage memory system that involves sensory memory, short-term memory and long-term memory. remember millions of pieces of information, from t rivial to vital; entire sense of self is that which we know from our memories, from our recollection of personal experiences. memories are often incomplete, biased, and distorted. many sides to every story because each person stores and retrieves memory for the event in distinctive ways. memory is a story that can be subtly altered through telling and retellings.