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Understanding Emotional Memory: Neurobiology of Declarative & Nondeclarative Systems, Slides of Neurobiology

The neurobiology of emotional memory, focusing on declarative and nondeclarative memory systems. Topics include long-term memory, procedural learning, classical conditioning, the role of the medial temporal lobe (mtl), and amnesia. Key concepts include encoding, consolidation, retrieval, working memory, and the differences between human and nonhuman primate models of amnesia.

Typology: Slides

2012/2013

Uploaded on 01/10/2013

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Download Understanding Emotional Memory: Neurobiology of Declarative & Nondeclarative Systems and more Slides Neurobiology in PDF only on Docsity!

Neurobiology of Emotional

Memory

Long-term memory

Nondeclarative

Procedural (^) Priming/ Perceptual

Classical Conditioning Nonassociative Learning

Striatum Cerebellum Motor Cortex Neocortex

Emotional Responses

Skeletal Muscles Reflex Pathways

Declarative (relational)

Facts (^) Events

Medial Temporal Lobe Diencephalon

&

Amygdala Cerebellum

Organization of Memory

emotion

emotion

Terms to Know

  • Encoding : learning new information
  • Consolidation : processes through which memory traces of newly formed information perseverate
  • Retrieval : recalling or recognizing previously learned information
  • Working Memory : online processing of information (short-term memory)

The medial temporal lobe (MTL) and declarative memory

-Prior to 1953, the role of the MTL in memory was

relatively unknown

-H.M. changed all that: bilateral temporal lobectomy =

complete anterograde amnesia

-Brenda Milner’s neuropsychological testing

H.M.’s retrograde amnesia

-H.M.s RA extends back

~11 years pre-surgery

  • Famous Faces performance is normal for 40s, then below normal for 50s, then severely impaired in the 60s & 70s

% Correct

Famous Faces Recognition by Decade

H.M.

Comparison

Intact domains of memory in amnesia

-Working memory:

HM’s digit span is normal

-Skill and Perceptual

learning

Delayed-NONmatching-to-sample test w/trial-unique

objects

sample

delay recognition

ITI sample

delay recognition

CORRECT
CORRECT

Performance on DNMS w/ trial-unique objects

50

60

70

80

90

100

. 10 70 130.

Controls MTL Lesion

Delay (sec)

% Correct Responses

Delineating the role of anatomical

components of the MTL

50

60

70

80

90

100

8 15 60 10 min

Control Amygdala Hippocampus A + HC

Delay in seconds

% CorrectResponses

DNMS Performance After Different Lesions

Work with monkeys in DNMS has

provided 3 important pieces of information:

1. Bilateral MTL damage impairs memory

even when limited to HC

2. Amygdala is not necessary for declarative

memory (but we’ll come back to this)

3. Cortex surrounding HC & amygdala is

important for memory