There are three types of human memory. Sensory memory is usually fleeting. If an object is placed in front of you for a few seconds, what you remember about that object when it is removed is a sensory memory. Some of this information might be moved into short-term memory which stores it very briefly. A phone number that has been read to you will be stored in your short-term memory where it will be quickly forgotten if you don’t use it quickly. Long-term memory is used to store information over a long period of time. Long-term memory explains why you remember your wedding day even years after it happened.