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. 2019 Jun 12;13:607. doi: 10.3389/fnins.2019.00607

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Copyright © 2019 Abuleil, McCulloch and Thompson.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Group average VEP waveforms in microvolts. (A) Average VEP waveforms across all three electrodes for the young adult group. (B) Average VEP waveforms across all three electrodes for the older adult group. Note that there was considerable between-subject variability (not shown).