Learning at your brain's rhythm: individualized entrainment boosts learning for perceptual decisions.


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Article
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Authors
Michael, Elizabeth 
Covarrubias, Lorena Santamaria 
Leong, Victoria 
Abstract

Training is known to improve our ability to make decisions when interacting in complex environments. However, individuals vary in their ability to learn new tasks and acquire new skills in different settings. Here, we test whether this variability in learning ability relates to individual brain oscillatory states. We use a visual flicker paradigm to entrain individuals at their own brain rhythm (i.e. peak alpha frequency) as measured by resting-state electroencephalography (EEG). We demonstrate that this individual frequency-matched brain entrainment results in faster learning in a visual identification task (i.e. detecting targets embedded in background clutter) compared to entrainment that does not match an individual's alpha frequency. Further, we show that learning is specific to the phase relationship between the entraining flicker and the visual target stimulus. EEG during entrainment showed that individualized alpha entrainment boosts alpha power, induces phase alignment in the pre-stimulus period, and results in shorter latency of early visual evoked potentials, suggesting that brain entrainment facilitates early visual processing to support improved perceptual decisions. These findings suggest that individualized brain entrainment may boost perceptual learning by altering gain control mechanisms in the visual cortex, indicating a key role for individual neural oscillatory states in learning and brain plasticity.

Description
Keywords
EEG, entrainment, learning, perceptual decisions, visual cortex, Humans, Evoked Potentials, Visual, Electroencephalography, Visual Perception, Brain, Learning, Photic Stimulation, Alpha Rhythm
Journal Title
Cereb Cortex
Conference Name
Journal ISSN
1047-3211
1460-2199
Volume Title
Publisher
Oxford University Press (OUP)
Sponsorship
Biotechnology and Biological Sciences Research Council (BB/P021255/1)
Wellcome Trust (205067/Z/16/Z)
Wellcome Trust (1360)
MRC (MC_UU_00030/15)
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