Lecture 2 Questions Flashcards
BADDELEY & HITCH’S WORKING MEMORY MODEL
how is STM maintained by the functions of the following components of this system:
- central executive
- visuo-spatial sketch pad
- phonological loop
- episodic buffer
- central executive - center for working memory, manipulates mem, main area for recall and processing, decision making, problem solving, and other cog. functions [ prefrontal cortex ]
- visuo-spatial sketch pad - receives neural input via events experienced in the environment, converts information & maintains visual/spatial images, organizes information by time and space (when and where), engage VSP by arousing or rewarding [ occipital lobe ]
- phonological loop - maintains auditory representation of experienced events (3 parts: phonological recoder, articulatory loop, phonological store) [ broca & wernicke’s area ]
- episodic buffer - combines subsystem information, forms temporal representation in stm (space and time) parietal lobe ]
BADDELEY & HITCH’S WORKING MEMORY MODEL
what roles do each of the subcomponents of the Phonological Loop contribute to STM:
- phonological recoder
- articulatory loop
- phonological store
- phonological recoder (area 44-45) - remembers visual representation of information through SUBVOCAL voice
- articulatory loop (cerebellum) - STM for recoder
- phonological store (wernicke’s area) - semantics and meaning for auditory sound
HEBB’S VIEW OF HOW INFORMATION IS REPRESENTED & STORED INTO MEMORY
the concept of the Cell Assembly is representative of _______ ?
all the neurons activated by a learning event
HEBB’S VIEW OF HOW INFORMATION IS REPRESENTED & STORED INTO MEMORY
What is the functional purpose of the following within Hebb’s Model:
- concept of sustained activity
- reverberation
- Hebbian Modification
- consolidation
- concept of sustained activity - same as reverberation ???
- reverberation - cells remain active even after stimulus is removed
- Hebbian Modification - reciprocal connection between neurons that active at the same time are strengthened - HM also contains ENGRAM (the actual “physical” memory of the event located in the cells)
- consolidation - cells that fire together wire together (combining many parts into a whole)
HEBB’S VIEW OF HOW INFORMATION IS REPRESENTED & STORED INTO MEMORY
what component of Hebb’s model is responsible for representing a stored memory?
engram
HEBB’S VIEW OF HOW INFORMATION IS REPRESENTED & STORED INTO MEMORY
How can Hebb’s “Cell Assembly” model be used to represent the process of rehearsal
that occurs in the short term store?
this process happens in the PFC
in working memory when new information comes in, the partial activation leads to the activation of an entire representation
rehearsing = neurons active = reciprocal connections are strengthened
HEBB’S VIEW OF HOW INFORMATION IS REPRESENTED & STORED INTO MEMORY
Understand the phrase “Cells that FIRE together WIRE together”
partial activation leads to activation of the entire representation of an event