Memory Pt.3 Flashcards

1
Q

Explicit Memory

A

-Semantic memory
-Episodic memory

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2
Q

Implicit Memory

A

-Procedural memory
-Classical conditioning
-Priming

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3
Q

Procedural Memory

A

Automatic behviour/actions related to motor movements and organization of sequences
-Basal Ganglia-motor sequence
-Prefrontal Cortex-organization
These are more immune to forgetting compared to other types of memory
-Not thinking of what you’re doing

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4
Q

Habits

A

When deliberate actions become routine
-Initially relies on explicit memory -> with training and/or exposure, relies on implicit memory

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5
Q

Habit Formation

A

-Rats trained on a T-shaped maze with tones to signal reward (chocolate milk; sugar water) at left or right end
-Required the striatum (can’t form habits without this)

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6
Q

Breaking Habits

A

-Removing a reward, or making one reward gross (non-rewarding) did not break the habit
-To break habit, you must inhibit prefrontal cortex to reduce association (between the habit and the reward)

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7
Q

Priming

A

-Prior exposure facilitates information processing without awareness
-Example: word-fragment completion test
-participants are likely to use prior words to complete the fragments without knowing it

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8
Q

Deja Vu

A

-The feeling that you’ve experienced something before that you have not
-When you feel like a place is familiar because you are implicitly reminded of another place

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9
Q

Implicit Emotional Responses

A

Conditioned emotional responses
-Automatic responses to things you find scary
-Fear responses to snakes, the dark and other scary stimuli (adaptive)
-Amygdala also supports explicit emotional memory

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10
Q

Eat a bowl of apples as a relaxation activity.
-Reward
-Breaks association

A

Clarke can’t stop eating popcorn! Most nights they find themselves looking forward to a big bowl of popcorn to relax. Their dentist told them they must stop this habit! What would be the most successful way for Clarke to stop their popcorn habit?

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11
Q

Semantic Memory

A

Aquired knowledge that includes facts about the world and the self, concepts, general ideas, meaning
-Formed from regularities and repeated occurrences in our experiences (formed from episodic memories)
-Requires time and repetitions for general facts (concepts) to be formed

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12
Q

Semantic Network

A

How do we store semantic knowledge?

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13
Q

Spreading Activation in the Semantic Network

A

-Spreading activation
-How a related concept pops up when thinking of another concept (priming)
-Helps explains trains of thought that might seem nonsensical or strange

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14
Q

Spreading Activation

A

-Automatic activity spread from an activated concept to interconnected concepts
-Thinking about a canary will trigger activation in related bird concepts
-Speading activation to features

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15
Q

The case of HM. Amnesia due to brain injury

A

-Bilateral removal of the medial temporal lobe, inlcuding the hippocampus
-Intact short-term memory
-Intact procedural memory
-Intact semantic memory
-Profound episodic memory loss
-He couldn’t learn new information and recalled his past in sparse detail

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16
Q

HM was stuck in the present

A

-He could not remember details of his past
-He could not encode new events
-He could not imagine the future

17
Q

Anterograde Amnesia

A

Inability to form new episodic memories

18
Q

Retrograde Amnesia

A

Inability to access memories from before amnesia
-Remote memories are less affected than recent memories

19
Q

Korsakoff’s Syndrome

A

-Chronic alcoholism -> thiamine deficiency -> damaged mammillary bodies of the hypothalamus, connected to the hippocampus
-Anterograde + retrograde amnesia
-Personality + other behavioural changes
-Confabulation

20
Q

Confabulation

A

Narrative story of an event that has not been experienced
-Deficits in monitoring processes supported by the prefrontal cortex
-False memories that they believe
-Mushing memories together
-Organization problem
-E.g. I might be telling you something that never actually happened…But I actually believe it did

21
Q

Dissociative Amnesia

A

-A very rare psychiatric disorder
-Usually, a response to psychological or physical trauma
-Retrograde amnesia
-Shifts in lifestyle
-Assuming a new identity

22
Q

Retrograde Amnesia

A

Someone who developed a tumor now can’t remember a wedding they attended years ago. This would be an example of what?

23
Q

Alzheimer’s Disease

A

-The most common form of dementia
-Build up of amyloid plaques and neurofibrillary tangles that cause cell death = brain shrinkage
-Medial temporal lobe (MTL) regions are the first to be affected, then spreads
-Earliest symptom is a deficit in episodic memory

24
Q

Healthy Aging

A

-Implicit memory is intact
-Semantic memory is intact
-Episodic memory (and working memory) is impaired

25
Q

Familiarity

A

Recognizing a single items
-Non-hippocampal memory
-Spared in aging
-I know, i know you from somewhere…

26
Q

Recollection

A

Recognizing a face AND a context
-Hippocampal memory
-Impaired in aging
-I know you from the dog parc and we met yesterday morning

27
Q

Remembering seeing their neighbour at the grocery store
-Person + Context

A

According to the associative deficit hypothesis, older adults would have the most problem with this memory situation…

28
Q

The Associative Deficit Hypothesis

A

Young-full attention + young-divided attention performed better than older adults on name-face associative recognition

29
Q

Adaptive Cognitive Aging

A

-Old-high recruited the bilateral PFC
-Evidence of neural compensation

30
Q

The Reminiscence Bump

A

Old adults tend to remember more events from teenage years than any other life period
-Adaptive function of memory
-Focus on novel events and experiences critical for self identify

31
Q

Cases of extreme memory : Taxi Drivers

A

-These people perform better on spatial memory tests than bus drivers
-These people have greater posterior hippocampus grey matter volumes
-The volume of thei posterior hippocampus is related to years of experience

32
Q

Highly Superior Autobiographical Memory

A

-Enhanced autobiographical memory (personal memories)
-Remember every single day from their lives in detail
-Recalling very detailed daily memories, as if it just occured
-Do not excel at laboratory tests
-These are not memory athletes

33
Q

Downsides of Superior Memory

A

-Cannot forget painful memories
-Consistency recalling memories (not forgetting details) relates to OCD symptoms