Chapter 8-Everyday Memory Pt.1 Flashcards
Autobiographical memory (AM)
Memory for specific experiences from our life, which can include both episodic and semantic components
- mental time travel
- multidimensional (spatial, emotional, and sensory components)
Sensory component of AM
Greenberg and Rubin
- patients who cannot recognize objects also experience loss of AM
- visual experience plays a role in forming and retrieving AM
Two ways of visually remembering an event
- First person perspective
2. Third person perspective
Planning for future also involves _____
Episodic memory (can simulate future events)
Participants are asked to describe a future event from their own point of view or in third person
Results in same brain area activation as past events
Cabeza and coworkers
Compared brain activation caused by autobiographical memory and laboratory memory
Participants viewed:
- photographs they took (A photos)
- photographs taken by someone else
Cabeza and coworkers experimental results
Both types of photos activated similar brain structures:
- medial temporal lobe MTL (episodic)
- parietal cortex (Processing of scenes)
A-photos activated more of the:
- prefrontal cortex (information about self)
- hippocampus (recollection)
Demonstrates the richness of autobiographical memories
What events are remembered well?
- significant events in a person’s life
- highly emotional events
- transition points
Reminiscence bump
Participants over the age of 40 are asked to describe an event to a neutral cue word
Memory is high for recent events (retention) and for events that occurred between 10-30 years of age (reminiscence)
Memory poor under age 10 (childhood amnesia)
Hypotheses about the reminiscence bump
- Self image
- Cognitive
- Cultural life script
Self image hypothesis
- Memory is enhanced for events that occur as a person’s self image or life identity is being formed
- people assume identities between ages 10-30
- memories from this period are a foundation for later development, either as continuous with that foundation or discontinuous and in need for explanation
- references made back to this momentous time of life would function cognitively as rehearsals
Cognitive hypothesis
- encoding is better during periods of rapid change that are followed by stability
- evidence from those who emigrated to the US after younger adulthood (>30 years of age) indicates reminiscence bump is shifted
Cultural life script hypothesis
Each person has:
- a personal life story
- an understanding of culturally expected events
Personal events are easier to recall when they fit the cultural life script
Results of Koppel and Bernsten’s “youth bias” experiment
Participants were asked to indicate how old a hypothetical person would be when the event that they consider to be the most important public event of their life time takes place (ages 10-30)
The distribution of responses are similar for both younger and older participants
Memory for emotional stimuli
Emotional events are remembered more easily and vividly
Emotion improves memory, becomes greater with time (may enhance consolidation)
Brain activity: amygdala
Review experiment where emotional pictures are remembered better than neutral words, even after 1 year
Results for emotional/neutral picture experiment
Recall for emotional pictures is better than for neutral pictures when subjects are exposed to stress during encoding (cortisol increases consolidation)
-arms in cold water versus arms in warm
There is no significance difference between emotional and neutral recall in the no stress condition. This result may be related to enhanced memory consolidation for the emotional picture.