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Updated: Jun 16, 2026

Transcranial Direct Current Stimulation (tDCS) for Memory Enhancement
Published on: September 18, 2021
Bridging neurocognitive aging and disease modification: targeting functional mechanisms of memory impairment
M Gallagher1, A Bakker, M A Yassa
1Department of Psychological and Brain Science, Johns Hopkins University, Baltimore, MD 21218, USA. michela@jhu.edu
Abstract:
Risk for Alzheimer's disease escalates dramatically with increasing age in the later decades of life. It is widely recognized that a preclinical condition in which memory loss is greater than would be expected for a person's age, referred to as amnestic mild cognitive impairment, may offer the best opportunity for intervention to treat symptoms and modify disease progression. Here we discuss a basis for age-related memory impairment, first discovered in animal models and recently isolated in the medial temporal lobe system of man, that offers a novel entry point for restoring memory function with the possible benefit in slowing progression to Alzheimer's disease.
Insights
As people age, Alzheimer's disease risk increases. Researchers identified a novel approach targeting age-related memory impairment in the medial temporal lobe to potentially restore memory and slow Alzheimer's progression.
Area of Science:
- Neuroscience
- Gerontology
- Pathology
Background:
- Alzheimer's disease (AD) risk significantly increases with age.
- Amnestic mild cognitive impairment (aMCI) represents an early stage with memory loss exceeding age-expected decline, offering a key window for intervention.
- Understanding age-related memory impairment is crucial for developing effective AD treatments.
Purpose of the Study:
- To discuss a basis for age-related memory impairment.
- To explore a novel intervention point for restoring memory function.
- To investigate potential benefits in slowing Alzheimer's disease progression.
Main Methods:
- Review of existing research on age-related memory impairment.
- Discussion of findings from animal models.
- Analysis of recent discoveries in the human medial temporal lobe system.
Main Results:
- A specific basis for age-related memory impairment has been identified.
- This basis was first observed in animal models and subsequently in the human medial temporal lobe.
- This discovery presents a novel target for therapeutic intervention.
Conclusions:
- Targeting the identified basis of age-related memory impairment offers a new strategy for memory restoration.
- Intervention at this level may provide a benefit in slowing the progression of Alzheimer's disease.
- Further research into this novel entry point is warranted for AD treatment development.
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