Biological bases and memory 7 Flashcards
Butter and Albert (1982)
=how to test retrograde amnesia
the famous face test
- intact remote memory ( very old memory )
- temporally graded retrograde amnesia - depends how far back in time it was.
episodic memory
disruption to temporal lobe amnesia
occurs in certain time/place or object/people
semantic memory (meaning)
relatively intact
e.g. capital of NZ
Kensiger et al (2001)
H.M presented with number of scenarios
Skill learning
intact
=mirror drawing task (adapted Milner 1964)
priming
-procedure done on healthy individual
tested= WORDS FRAGEMENT COMPLETION
later presented - word fragment
H_R_
PRIMING is spared in temporal lobe amnesia. even though people don’t EXPLICITLY remember seeing the priming word, their nervous system has been IMPLICITLY affected by it
habits
intact in temporal lobe amnesia
what do the insomnia findings suggest about memory organisation?
memory -implicit memory- procedural =skills, priming, habit (behavioural) -explicit memory -declarative =episodic, semantic - temporal lobe affects this part
Trace delay
- cessation of neural firing (STM)
- weakening synapses (LTM)
interference
- retroactive interference
- positive interference
retroactive interference
new learning interferes with old
positive interference
old learning interferes with new
Baddely and Hitch (1977)
=forgetting due to interference
fit to ordered of games played=-.42
fit to time since games played=0.04
blocking/ retrieval failure
feeling of knowing/tip of tongue
absentmindness
result of shallow encoding of events usually due to failure to pay attention.
memory persistence -memory of traumatic events
three symptoms cluster after an event that elicited fear, helplessness, horror
= post-traumatic stress disorder (PTSD)
symptom 1
avoidance symptoms, including loss of interest in social situations + emotional detachment
symptom 2
psychophysiological reactivity in response to trauma-related stimuli, including exaggerated startle, hypervilance, elevated perspiration and shortness of breath
symptom 3
re-experiencing the traumatic event through intrusive thoughts, nightmares, flashbacks and related phenomena that are produced by reminders of the traumatic event
most cases memory of a traumatic event is enhanced
- arousal attention
- enhanced memory
memory distortion= bias
reconstruction of automobile deconstruction
-short film on traffic accident
Loftus and Palmer (1974)
-how fast the cars going when they HIT each other?
-how fast were the cars going when they SMASHED INTO each other?
when if asked- seen broken glass- people agreed when there were no broken glass at all
memory distortion= suggestibility
altering memory because of misleading information
develops false memories
wade et al (2002)
no one was suspicious of the photographs