01 Flashcards
What is memory?
Memory is a mental capacity to encode, store and retrieve information. It represents our unique perceptions of events rather than being accurate or objective.
What is Encoding?
the initial processing of information that leads to representation in memory. Its the act of getting info into our memory system through AUTOMATIC or EFFORTFUL processing. requires selection of stimulus event and making a classification of it.
What is storage?
storage involves retention of encoded material over time.
What is retrieval?
Retrieval is the payoff for your earlier efforts in encoding and storage.
How do we form memories?
these three stages work together to transform sensory experience into a lasting record that has a pattern or meaning. It has to be processed by three stages: Sensory memory, Working memory and Long term memory.
What is Sensory memory?
most fleeting, holds sights, smells, sounds, textures for a maximum of a few seconds. Sensory memory can hold far more information than it ever reaches the consciousness.
Sensory memory into working memory
Visual stimulation ——> Iconic memory
Auditory Stimulation —–> Echoic memory
Tactile Stimulation (touch) —–> Tactile sensory memory
Olfactory Stimulation (smell)—–>Olfactory sensory memory
Gustatory Stimulation (taste)—->Gustatory sensory memory
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Working memory
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Long- term Memory
What is working memory?
second stage of processing, takes info from sensory registers and makes connections with items already in long-term storage. holds information up to 20 to 30 seconds. originally called short-term memory (STM).
Memory span
George Miller said that seven (plus or minus two) was the “magic number” that characterized people’s performance on random lists of letters, words…
A model of Working memory
1) Stimulation => Sensory Memory
2) Central Executive (Working memory)
3) results in behavior.
4) devided into 1️⃣Episodic buffer(events) 2️⃣Sketchpad (visual image) 3️⃣Phonological loop( sounds) they are all LTM
details of Sensory Memory
Function: briefly holds information awaiting entry into working memory.
Encoding: no meaningful encoding.
Storage capacity: 12-16 items.
Duration: from 1/4 to a few seconds.
Structure: a separate sensory register for each sense
Biological basis: Sensory pathways
details of Working memory
Function: Involved in control of attention attaches meaning to stimulation makes associations among ideas and events.
Encoding: Encodes information to make it acceptable for LTM
Storage capacity: 7±2 chunks
Duration: About 20 seconds unless repeatedly rehearsed
Structure: Central executive, Phonological loop, Sketchpad, Episodic buffer.
Biological basis: involves the hippopotamus and frontal lobes.
details of Long-term memory
Function: Long-term storage of information
Encoding: Stores information in meaningful mental categories
Storage capacity: Unlimited
Duration: Unlimited
Structure: Procedural and declarative memory (further subdivided into semantic and episodic memory)
Biological basis: Involves various parts of the cerebral cortex.
What is Long-term memory?
final stage of processing. stores information from working memory for long periods of time or forever. all the experiences, rules, skills, words. LTM contains total knowledge of the world and ourselves.
Dimensions of Long-term memory
Episodic Memory:
Recollections of
specific personal Semantic memory:
Experiences General knowledge
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Declarative memory ( memory of facts and events)
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*️⃣Long-term memory
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Procedural memory ( Memory of how to do things)