L3 - memory and learning Flashcards

1
Q

what is learning

A

gaining new info

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2
Q

what is memory

A

retention of learned info

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3
Q

types of memory

A

declarative - facts and events

non declarative - procedural, skeletal, emotional

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4
Q

features of declarative memory

A

easy to learn, easy to froget

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5
Q

features of non declarative

A

not available for recollection

  • needs repeititon
  • less likely to be forgoteen
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6
Q

types of memory in decl memory

A

LTM and STM

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7
Q

what is STM vulnerable to

A

disturption etc by someone else, trauma, ECT(Electroconvulsive therapy)

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8
Q

pathways of memory consolidation

A

sensory info>STM>consolidation into LTM

sensory > STM
also > consildolation to LTM as the same time

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9
Q

what is amnesia

A

loss of memory and learning ability

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10
Q

causes of amensia

A

concussion, tumour, stroke, alcholism

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11
Q

types of amnesia

A
  • anterograde amnesia (inability to form new memories) - retrograde amnesia (old memories are lost).
  • Transient global amnesia (TGA) is a sudden, temporary interruption of short-term memory
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12
Q

what can be physical representation of memory

A

engram or memory trace

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13
Q

where is declarative memory stored in the brain

A

medial temporal lobe, cortex

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14
Q

where is visual memory stored in

A

extrastriatal cortex

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15
Q

where are complex memories stored in

A

temporal lobes

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16
Q

what lobe does the memory processing take place

A

medial temporal lobe

17
Q

types of memory in the hippocamus and its function

A

spatial - places
working - related to onoging behaviour
relational - linking things together

18
Q

conseq of temporal loboectomy

A

loss of STM - declarative

-loss of anterograde and reterograde

19
Q

whats the Hebbs theory

A

strength and effectiveness of synapes between memory connections can be altered by experience
- when one axon is near another axon, growth process takes place so the axons effieciency is increased

20
Q

how are the cell or synapses assembled during STM

A

reciprocally interconnected

21
Q

how are the cells or synpases connect during LTM

A

fire and wire together for consolidation

22
Q

how does the snaptic connections get stronger

A

strong activation of synpases leads to firing of post synpatic neuron
- leads to LT-potentiation (multiple stimuli and signals- strengthens the connection between neurones)

23
Q

what is required for LTP

A

Glu released > go through AMPA receptor > removes Mg ion on NMDA receptor> more Glu moves into post synpatic neurone> Ca influx > depol> AP

insertion of AMPARs can happen into the membrane from the cytoplasm

24
Q

what is LT-depression

A

phase when there is occasional conciding firing

- low stimulation of the NMDA Rs

25
Q

pathway of LTP for learning

A

neuronal activity > neurotrophin synthesis, secretion, signalling> actions > modification of synaptic transmission and connectivity