Flashcards in Memory Deck (115)
What is needed for long term memory?
Involved in perceptual priming
Protein kinases (PKM) prevents the removal or AMPA receptors. Lasts indefinitely
Maintenance (stage 4 of synaptic strengthening)
BDNF produces sustained calcium release. Protein synthesis contributes to stability. Lasts about 2-4 hours
Consolidation required (stage3 of synaptic strengthening)
What is the most beneficial way to prevent cognitive decline?
Social interaction and physical exercise as opposed to video games or isolated/stationary tasks
High amounts of this cause impairments in consolidation and retrieval
What happens in storage/consolidation?
Neural trace formed via synaptic plasticity across neurons and brain regions to form a physical representation of a memory
Learning new info
What does increased activation of the hippocampus and parahippocampal gyrus predict?
Improved later remembering
Process of accessing stored memories (remembering)
Essential to memory functions and has differential effects in different stages of memory
Parts of non declarative (implicit) memory
Procedural memory (how to), associative learning (conditioning), and non associative learning (habituation and sensitization)
Involved in conditioned responses between two stimuli
What is less likely to be modified due to reconsolidation?
Strong, older memories
Patient HM cause of surgery
Severe temporal lobe epilepsy
Involved in habituation and sensitization
Has unlimited capacity and lasts indefinitely
Long term memory
Presynaptic differences in long term potentiation
Part of the brain involved with naming animals but not tools
Brocas area and left medial occipital lobe
Long term potentiation as a memory mechanism
Strongest link we have to memory formation. Associativity, cooperativity, and persistence
Parts of declarative (explicit) memory
Semantic (facts) and episodic (what happened)
What is contained in working memory?
A central executive, phonological loops, episodic buffers, and visuospatial sketchpads
What happens to most info that hits sensory memory?
It is forgotten
What two parts of the brain support the central executive in working memory?
Dorsolateral prefrontal cortex and anterior cingulate cortex
What are long lasting memories?
Stories we all have and like to tell that strengthen over time but aren't as accurate. Strongest memories as time goes on
What do a little and a lot of stress cause?
Little = boosted performance
Lot = reduced performance
What are the possible underlying changes that cause healthy aging of memory?
White matter deterioration, poor sleep quality, and difficulty clearing adenosine
What does memory retrieval stimulate?
Same consolidation processes responsible for original learning