Memory Flashcards
Memory
The ability to store and retrieve information over time
Three key functions of memory
Encoding, storage and retrieval
Encoding
The process by which we transform what we perceive, think or feel into an enduring memory. Memories are constructed by combining existing information with new information.
Elaborative encoding
Actively relating new information to knowledge that is already in memory
Visual imagery encoding
Storing new information by converting it into mental pictures. Activates visual processing regions in occipital lobe and improves recall.
What’s the mechanism of visual imagery encoding?
Relates incoming memory to knowledge already in memory and creates 2 different memory “placeholders” (visual and verbal)
Organizational encoding
The process of categorizing information according to the relationship among a series of items
Where is information stored?
Networks of association, where nodes of information are linked together. Underlies organizational encoding.
Schemas
Determine which units of information are stored together (chunked). There are schemas of the self, others and situations.
Early maladaptive schemas
A broad, pervasive pattern comprised of thoughts, memories and emotions regarding oneself or others that was formed at a young age.
Memory storage
The process of maintaining information in memory over time
What are the three kinds of memory storage?
Sensory, short term, long term
Sensory storage
Holds sensory information for a few seconds or less. Includes iconic and echoic memory.
Iconic memory
Fast decaying store of visual memory (about 1 second)
Echoic memory
Fast decaying store of auditory information (about 5 seconds)
Short term memory
Holds non-sensory information for more than a few seconds but less than a minute. Can hold about 7 meaningful items at once.
Rehearsal
The process of keeping information in short-term memory by mentally repeating it. Each repetition re-enters the information into short-term memory.
Chunking
Combining small pieces of information into larger clusters or chunks
Working memory
Active maintenance of information in short-term storage. Short-term store is not simply a place where you put information but includes operations and processes used to work with the information.
Central executive
Part of working memory that coordinates subsystems (frontal lobe).
What happens if there’s damage to the verbal component of the working memory?
Difficulty holding information in memory as well as learning new words
Long term memory
Holds information for hours, days, weeks or years. No known capacity limit.
Anterograde amnesia
Inability to transfer new information from the short-term store into the long-term store
Retrograde amnesia
Inability to retrieve information that was acquired before a particular date, usually the date of an injury or operation.
Which region is critical for putting information into long-term store?
Hippocampal region
Consolidation
A process by which memories become stable in the brain. When memories are first formed they are easily disrupted, but consolidation protects them from disruption.