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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

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Published on: July 16, 2015

Delays in neural processing during working memory encoding in normal aging.

Theodore P Zanto1, Brian Toy, Adam Gazzaley

  • 1Department of Neurology, W.M. Keck Foundation Center for Integrative Neuroscience, University of California San Francisco, San Francisco, CA 94158, USA.

Neuropsychologia
|August 12, 2009
PubMed
Summary
This summary is machine-generated.

Older adults show slower neural processing, impacting working memory (WM) encoding for visual stimuli. Delays in attentional allocation and specific feature processing contribute to age-related cognitive decline in WM performance.

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Related Experiment Videos

Last Updated: Jun 21, 2026

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Published on: July 16, 2015

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07:01

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An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing
04:30

An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing

Published on: October 25, 2019

Area of Science:

  • Cognitive Neuroscience
  • Neuroscience of Aging

Background:

  • Neural processing speed declines with age, potentially causing cognitive deficits.
  • The specific impact of encoding speed delays on working memory (WM) remains unclear.

Purpose of the Study:

  • To investigate how aging affects the relationship between neural processing speed and WM performance.
  • To examine age-related differences in neural measures during stimulus encoding using electroencephalography (EEG).

Main Methods:

  • Young and older adults performed a selective delayed-recognition task involving color and motion stimuli.
  • Electroencephalography (EEG) was used to record neural activity during stimulus encoding.
  • Neural measures, including selection negativity (SN) and alpha band activity, were analyzed for latency and magnitude.

Main Results:

  • Older adults exhibited latency delays in SN and alpha band activity for both color and motion stimuli.
  • SN latency and magnitude predicted subsequent recognition performance.
  • An age-related delay in N1 latency was observed specifically for color stimuli encoding.

Conclusions:

  • Age-related deficits in generalized feature-based and feature-specific processing speed during encoding contribute to impaired WM performance.
  • Neural processing speed during selective encoding is a critical factor in age-related working memory decline.