Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2015 Dec 22;9:474. doi: 10.3389/fnins.2015.00474

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2015 Gembler, Stawicki and Volosyak.

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) or licensor 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.

PMC Copyright notice

Illustration of the calibration procedure for one subject. After EEG-data were recorded (subject's eyes closed) 10.61 Hz had the strongest SSVEP response and was determined as alpha wave frequency. As this frequency did not belong to the set of possible target frequencies no frequency was filtered out. In phase 2 (multi-target stimulation) EEG-data were recorded while the subject faced two circles in sequence (each for 10 s). The first circle presented the target frequencies 6.32, 7.50, 8.00, 10.00, 10.91, 13.33, and 17.14 Hz. The second circle presented 6.67, 7.06, 8.57, 9.23, 12.00, 15.00, and 20.00 Hz. Results from the EEG recordings are displayed in the diagrams. In phase three, frequencies with the highest SSVEP-responses from both recordings were presented in series, and corresponding SSVEP key parameters were calculated.