Final answer:
Iconic memory and echoic memory are forms of sensory memory, which is the initial stage of the memory process where brief sensory events are stored. Iconic memory refers to the visual sensory memory, while echoic memory refers to the auditory sensory memory.
Step-by-step explanation:
Iconic memory and echoic memory are forms of sensory memory. Sensory memory is the initial stage of the memory process where brief sensory events, such as sights, sounds, and tastes, are stored. It is a very brief storage that lasts only a couple of seconds. Iconic memory refers to the visual sensory memory, while echoic memory refers to the auditory sensory memory.