Cited by 147Dementia and Cognitive Impairment ResearchCognitive Functions and MemoryMemory Processes and Influences

Evidence of Neuronal Compensation During Episodic Memory in Subjective Memory Impairment

Erk, Susanne·2011·Archives of General Psychiatry

Abstract

CONTEXT: Accumulating evidence suggests that the mere subjective feeling of memory impairment in the absence of objective cognitive deficits may precede mild cognitive impairment in the continuum of Alzheimer disease manifestation. Brain imaging studies have provided insights into structural and functional alterations at the clinical stages of dementia and mild cognitive impairment, but the functional characteristics of subjective memory impairment (SMI) are largely unstudied. OBJECTIVE: To investigate brain activation during memory tasks in individuals without cognitive impairment who report SMI compared with control subjects without cognitive impairment and without SMI. DESIGN: Functional magnetic resonance imaging study of episodic memory and working memory. SETTING: Memory outpatient clinic. PARTICIPANTS: Nineteen participants reporting SMI without cognitive impairment and 20 control individuals without cognitive impairment and SMI. MAIN OUTCOME MEASURE: Brain activation patterns and performance during an associative face-profession episodic memory task, including encoding, recall, and recognition, and a working memory task. RESULTS: Compared with the control group, SMI was associated with a reduction in right hippocampal activation during episodic memory recall in the absence of performance deficits. This was accompanied by increased activation of the right dorsolateral prefrontal cortex. No differences in performance and no difference in brain activation during working memory were observed in the SMI group. CONCLUSIONS: These results suggest that SMI is accompanied by functional alterations in hippocampal integrity that reflect early neuronal dysfunction and by compensatory mechanisms that preserve memory performance.

Integrity signals

Registry

Crossref · 10.1001/archgenpsychiatry.2011.80

Cites

56 of 56 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Subjective cognitive decline is associated with reduced activation in the right hippocampus and increased activation in the right dorsolateral prefrontal cortex during an episodic memory recall task.

    “However, a different effect was observed in another study [146], which showed that SCD was associated with reduced activation in the right hippocampus and increased activation in the right dorsolateral prefrontal cortex during an episodic memory recall task.”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Erk, S.
Affiliations
Charité – Universitätsmedizin Berlin (DE)
Corresponding author
Erk, Susanne
Venue
Archives of General Psychiatry
Published
2011-08-01
Volume
68
Issue
8
Pages
845
ISSN
0003-990X (ISSN-L)
OpenAlex
W1990331183
Cited by
147
References
56
Citations by year
2026: 2 · 2025: 6 · 2024: 5 · 2023: 11 · 2022: 11 · 2021: 13 · 2020: 11 · 2019: 18 · 2018: 11 · 2017: 9 · 2016: 9 · 2015: 9 · 2014: 16 · 2013: 9 · 2012: 5
FWCI
6.99
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of General Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • DZNE Pub (submittedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Functions and Memory
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
Keywords
subjective memory impairment, episodic memory, working memory, hippocampal activation, dorsolateral prefrontal cortex, mild cognitive impairment, Alzheimer's disease, brain activation, memory performance
MeSH terms
Aged, Brain Mapping, Female, Hippocampus, Humans, Magnetic Resonance Imaging, Male, Memory, Memory Disorders, Psychomotor Performance, Mental Recall, Prefrontal Cortex, Self Report

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review