Sensory memory is the first stage of memory and involves briefly registering a large amount of information from the senses. It acts as a "snapshot" of the environment, allowing focus on relevant details. There are three stages of memory: sensory memory, short-term memory, and long-term memory. Sensory memory is very brief but holds a large amount of information. It transmits some of what is sensed to short-term memory. Types of sensory memory include visual, auditory, and touch memory.