Definition
The first and briefest stage of human memory, in which information from the senses (sight, sound, touch, etc.) is held for a fraction of a second to a few seconds before either being passed to short-term memory or fading away. Sensory memory acts as an automatic filter, processing incoming stimuli and selecting what is worth attending to.
Plain English
It is the very short window — usually a second or two — during which your senses hold on to what you just saw, heard, or felt before your brain decides whether to pay attention to it or let it go.
Context Anchor
Seen in aviation instruction when explaining how learners first take in information during ground lessons, cockpit demonstrations, and flight training.
Derivation
Sensory comes from the Latin sensus, meaning a perception or feeling, from sentire (to feel or perceive). The name simply tells you this is the memory stage tied directly to the senses, before any thinking has happened.
Why Pilots Care
Instructors who understand sensory memory can time demonstrations and checklists so critical information is noticed before it fades, reducing errors during high-workload phases of flight.
Analogy
Sensory memory is like a quick glance at a picture. For a moment, the image is still in your mind, but unless you focus on it, the details are gone almost immediately.
Grounding Statement
In the cockpit, a student may hear a radio call or see a gauge movement for only a moment before other sights and sounds replace it.
Intuition Check
Sensory memory does not mean a long-term memory about the senses. It means the very brief first holding of information that has just entered through the senses.
Example Sentence 1
The instructor paused before the next radio call to make sure the student's sensory memory was not already overloaded by the previous traffic advisory.
Example Sentence 2
During an IFR lesson the instructor spoke the new heading only once, counting on the student’s sensory memory to hold it until it could be set on the heading bug.