memory_2_08 - 1 Memory II October 2, 2008 2 3 4 5 6 7 8 The...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 1 Memory II October 2, 2008 2 3 4 5 6 7 8 The Human Amnesic Syndrome • Impaired new learning (anterograde amnesia), exacerbated by increasing retention delay • Impaired recollection of events learned prior to onset of amnesia (retrograde amnesia, remote memory impairment), often in temporally graded fashion • Not limited to one sensory modality or type of material • Normal IQ, attention span, “nondeclarative” forms of memory 9 Recent/Remote Distinction • Three patterns of RA – Temporally-graded – Temporally-limited – Decade-nonspecific • Typically see both AA and RA in amnesia (“no RA without AA”) • Selective (focal) retrograde amnesia 10 11 Frontal/Executive Contributions to Memory – Temporal ordering (“time tagging”) of memories • Contextual aspects of memory – Source memory (memory for where information was learned) – Metamemory (“feeling of knowing”) – Intentional aspects of memory/prospective memory (“remembering to remember”) 12 Theoretical Accounts of Amnesia 1.Encoding deficit • Amnesics have difficulty organizing and learning TBR information for later recall • Evidence from LOP studies • Can explain: AA (impairment in new learning, or recent memory) • Has difficulty explaining: shrinking RA
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 13 Theoretical Accounts (cont.) 2. Consolidation deficit • “post-encoding” deficit: difficulty in the consolidation of TBR information • Huppert & Percy (1979): accelerated rates of forgetting • Can explain: rapid forgetting in amnesia • Can’t explain: extensive RA 14 Theoretical Accounts (cont.) 3. Retrieval deficit • Studies showing amnesics are abnormally susceptible to interference • Retrieval is often aided by cuing • Inconsistent performance across testing situations • Indirect versus direct tests of memory • Helpful in explaining some retrograde deficits 15 Spared Abilities in Amnesic Disorders 1.Attention span (e.g. digit span) 2.Measured intelligence 3.‘indirect’ forms of memory (nondeclarative) • Skills; skill learning (rotary pursuit, mirror tracing or reading) • Priming (perceptual and conceptual) • Conditioning • ‘familiarity’ 16 17 18 19 20 Word Word -Stem Completion Stem Completion 1 • IMM_______ • GRA_______ • PRO_______ 2 • PAR_______ • HOL_______ • CHI_______ 21 Word-Fragment Completion
Background image of page 2
3 1 • A L _ _ G A _ O _
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 7

memory_2_08 - 1 Memory II October 2, 2008 2 3 4 5 6 7 8 The...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online