Long-term memory is memory that lasts from days to years.
Short-term memory is a temporary potentiation of neural connection that can become long-term memory in the process of memory consolidation
As long-term memory is subject to fading in the natural forgetting process, several recalls/retrievals of memory may be needed for long-term memories to last for years. Individual retrievals can take place in increasing intervals in accordance with the principle of spaced repetition
Sleep is consider a necessary factor for establishing well-organized long-term memories]
[Long term memory Unlimited size and duration; Semantic storage Memory Interference (some decay?) Buttons & Icons – visual symbols as prompts](submitted by B.Kharel)