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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

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Neural plasticity underlying visual perceptual learning in aging.

Jyoti Mishra¹, Camarin Rolle¹, Adam Gazzaley²

¹Department of Neurology, University of California, San Francisco, San Francisco, CA, USA.

|September 15, 2014

Summary

This summary is machine-generated.

Older adults improved perceptual discrimination and working memory through training. Event-related potential (ERP) recordings revealed enhanced neural activity, specifically the N1 and N2 components, correlating with improved attention and task performance.

Keywords:

Aging Cognitive training ERP Perceptual learning Transfer of benefit Visual perception Working memory

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Area of Science:

Neuroscience
Cognitive Psychology
Gerontology

Background:

Healthy aging involves declines in perception and cognition, including working memory.
Previous studies showed perceptual training improves older adults' discrimination and working memory.
Neural mechanisms underlying these improvements remain largely unexplored.

Purpose of the Study:

To investigate the neural underpinnings of perceptual training benefits in older adults.
To examine changes in event-related potential (ERP) components following perceptual training.
To correlate neural changes with improvements in perceptual discrimination and working memory.

Main Methods:

Older adults underwent perceptual training with Gabor stimuli at 5 and 10 Hz.
Event-related potentials (ERPs) were recorded pre- and post-training.
ERP components (N1, N2) were analyzed and compared to a control group.

Main Results:

Perceptual training significantly enhanced visual N1 and N2 ERP components.
N1 enhancement correlated with improved perceptual discrimination.
N1 and N2 changes were linked to the speed of the perceptual task (10 Hz vs. 5 Hz).

Conclusions:

Post-training neural enhancements suggest improved attentional allocation in older adults.
These neural changes facilitate the dissociation of rapidly presented, overlapping stimuli.
Perceptual training offers a viable strategy to enhance cognitive functions in aging.