How does the brain take in, hold and store information so it can be retrieved later?
the Atkinson-Shiffrin multi-store model of memory, including the function, capacity and duration of sensory memory, short-term memory and long-term memory, and the role of the hippocampus, amygdala, neocortex and cerebellum in storing and retrieving explicit and implicit memories
A focused answer to the VCE Psychology Unit 3 dot point on memory. Covers the Atkinson-Shiffrin multi-store model (sensory, short-term and long-term memory, with capacity and duration), the distinction between explicit and implicit memory, and the roles of the hippocampus, amygdala, neocortex and cerebellum in storing and retrieving memories.
Reviewed by: AI editorial process; not yet individually human-reviewed
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What this dot point is asking
VCAA wants the Atkinson-Shiffrin multi-store model of memory, including the function, capacity and duration of the three stores, the difference between explicit and implicit long-term memory, and the role of four brain regions (hippocampus, amygdala, neocortex, cerebellum) in storing and retrieving memories.
The answer
Memory is the active processing of information so it can be encoded, stored and later retrieved.
The Atkinson-Shiffrin multi-store model
Richard Atkinson and Richard Shiffrin proposed that memory has three separate stores through which information flows: sensory memory, short-term memory and long-term memory. Information moves between stores through the processes of attention and rehearsal.
Sensory memory. This store receives all incoming sensory information.
- Function: holds an exact, brief copy of raw sensory input.
- Capacity: unlimited (potentially everything the senses detect).
- Duration: very brief. Iconic (visual) memory lasts about 0.2-0.4 seconds; echoic (auditory) memory lasts about 3-4 seconds.
Information that is attended to passes into short-term memory; the rest decays.
Short-term memory (STM). Also called working memory in newer models.
- Function: consciously holds and manipulates information that is currently in use.
- Capacity: limited to about 7 plus or minus 2 items (Miller's magic number), which can be expanded by chunking.
- Duration: about 18-20 seconds without rehearsal.
Maintenance rehearsal (repetition) keeps information in STM; elaborative rehearsal (linking it to existing knowledge) transfers it into long-term memory.
Long-term memory (LTM).
- Function: relatively permanent storage of information.
- Capacity: considered effectively unlimited.
- Duration: potentially a lifetime.
Explicit and implicit long-term memory
Explicit (declarative) memory is consciously retrieved and can be stated. It splits into episodic memory (personal events, like your last birthday) and semantic memory (facts and general knowledge, like the capital of France).
Implicit (non-declarative) memory is retrieved without conscious effort. It includes procedural memory (skills and actions, like riding a bike) and classically conditioned responses.
The role of brain regions
- Hippocampus. Forms and encodes new explicit memories and consolidates them for storage. Damage prevents new explicit memories from forming.
- Amygdala. Encodes the emotional component of memories, especially those tied to fear, strengthening how strongly emotional events are stored.
- Neocortex. The long-term storage site for explicit memories once they are consolidated; episodic and semantic memories are distributed across it.
- Cerebellum. Encodes and stores implicit procedural memories and simple classically conditioned reflexes, coordinating learned movement.
Putting it together
When you learn to drive, the hippocampus encodes the explicit facts (road rules), the amygdala tags any frightening near-miss with emotion, the neocortex stores the road rules long term, and the cerebellum stores the procedural skill of changing gears so it eventually becomes automatic.
Exam-style practice questions
Practice questions written in the style of VCAA exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
2025 VCAA1 marksA study explored which paper-folding techniques are more easily learnt by four-year-old children. The memory of the fine motor skills required for paper-folding is stored in the A. neocortex, because this is a semantic memory. B. cerebellum, because this is an implicit memory. C. basal ganglia, because this is an explicit memory. D. hippocampus, because this is a procedural memory.Show worked answer →
Answer: B. This is a 1 mark multiple-choice item.
Fine motor skills (such as how to fold paper) are implicit procedural memories - memories of how to perform an action, retrieved without conscious effort. The cerebellum encodes and stores these movement-based procedural memories, so B correctly pairs the structure with the memory type.
A is wrong because a motor skill is procedural, not semantic, and the neocortex stores explicit long-term memory. C wrongly labels a procedural memory as explicit. D names the hippocampus, which is involved in forming explicit (declarative) memories, not storing procedural skills.
2023 VCAA1 marksPhysical education teachers demonstrate a motor skill and ask students to perform it later. As students master the desired action, the memory of the motor skill involves the A. neocortex and hippocampus, as it is an explicit memory. B. basal ganglia and cerebellum, as it is an implicit memory. C. hippocampus and cerebellum, as it is an implicit memory. D. hippocampus, neocortex and amygdala, as it is an explicit memory.Show worked answer →
Answer: B. This is a 1 mark multiple-choice item.
A well-mastered motor skill is an implicit (procedural) memory, retrieved automatically. The cerebellum controls the coordination and timing of the movement, and the basal ganglia are involved in habitual, learnt motor sequences, so B correctly pairs both structures with an implicit memory.
A and D involve the hippocampus and neocortex, which support explicit memory, so they are wrong for a procedural skill. C is wrong because it includes the hippocampus, which is not required for retrieving a consolidated implicit motor memory.
2023 VCAA1 marksAccording to the Atkinson-Shiffrin multi-store model of memory, the retention stage of observational learning is most effective when A. the visual information of the motor skill is first received in the sensory register. B. rehearsal of the visual image of the motor skill maintains it in the short-term memory store. C. the memory of the motor skill is retrieved from the short-term memory store to the sensory memory store. D. the mental representation of the motor skill is encoded from the short-term memory store to the long-term memory store.Show worked answer →
Answer: D. This is a 1 mark multiple-choice item.
In the Atkinson-Shiffrin model, information moves from sensory memory to short-term memory and, through rehearsal, is encoded into long-term memory for durable storage. Retention in observational learning means storing the modelled behaviour for later use, which corresponds to transferring the mental representation from short-term memory into long-term memory, so D is correct.
A describes the initial sensory register, not retention. B describes only brief maintenance in short-term memory, which would not retain the skill long term. C reverses the direction of flow (long-term or short-term back to sensory), which the model does not propose for storage.