Final answer:
A visual sensory store with a duration of less than 1 second in sensory memory is referred to as iconic memory. It captures fleeting visual details before they are processed into short-term memory or discarded.
Step-by-step explanation:
In sensory memory, a visual sensory store with a short duration of less than 1 second is known as iconic memory. Sensory memory is the storage of brief sensory events, such as sights, sounds, and tastes, and is the first level of processing in the Atkinson-Shiffrin model. Iconic memory specifically refers to the fleeting storage of visual information, which, if deemed valuable, can move into short-term memory. Other types of sensory memory include echoic memory for auditory information, haptic memory for tactile information, and olfactory memory for smells. Each type of sensory memory has a very brief storage capacity before the information is either discarded or processed further into short-term memory.