How long do memories typically last in sensory memory without attention?

Memories in sensory memory last for a very brief duration, typically less than a second to several seconds. Sensory memory is the initial stage of memory where information is captured in its raw form through our sensory receptors. This type of memory is highly fleeting; it allows us to retain impressions of sensory information just long enough for some processing to occur if attention is directed toward it. If the information is not attended to, it quickly fades away. This rapid decay is essential because it prevents sensory overload and helps us focus on what is most important in our environment. The short duration underscores the importance of attention in transferring information from sensory memory to short-term memory for further processing.