What is the primary function of sensory memory?

The primary function of sensory memory is to briefly capture sensory information. Sensory memory serves as the initial stage of memory processing, where it holds onto the vast amount of sensory stimuli that we encounter in our environment for a very short period, typically less than a second for visual stimuli (iconic memory) and a few seconds for auditory stimuli (echoic memory). This allows individuals to perceive and process the sensory input before it either fades away or is transferred to short-term memory if it is deemed significant or relevant for further processing.

Through this brief retention, sensory memory provides an initial snapshot of the sensory experience, enabling the brain to filter and focus on the most pertinent information while discarding the rest. This filtering mechanism is crucial for efficient cognitive functioning, allowing individuals to respond to their environment without being overwhelmed by every sensation they encounter.