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Influence of early attentional modulation on working memory.
1Department of Neurology, Physiology and Psychiatry, W. M. Keck Center for Integrative Neurosciences, University of California, San Francisco, USA. adamgazz@comewander.com
Neuropsychologia
|December 28, 2010
Summary
Attention significantly impacts working memory (WM) by modulating early visual perception. This top-down control, influenced by factors like cognitive load and aging, affects subsequent WM performance.
Area of Science:
- Cognitive Neuroscience
- Psychology
Background:
- Attention is known to influence working memory (WM) across various processing stages.
- The precise mechanisms and critical factors in the attention-perception-WM interaction remain areas of active investigation.
Purpose of the Study:
- To investigate whether attention impacts WM through its effects on early perceptual processing.
- To identify critical factors influencing the attention-perception-WM interaction.
Main Methods:
- Utilized electroencephalography (EEG), functional MRI (fMRI), and transcranial magnetic stimulation (TMS).
- Employed diverse stimuli (features, complex objects) and experimental paradigms.
- Included research populations of younger and older adults.
Main Results:
- Top-down modulation of visual cortical activity at early perceptual stages (100-200 ms) significantly impacts subsequent WM performance.
- Attentional control at this early stage is influenced by cognitive load, task practice, perceptual training, and aging.
Conclusions:
- Attention exerts its influence on working memory via early perceptual processing stages.
- Cognitive load, practice, training, and aging are key factors modulating this attention-perception-WM relationship.
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