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Custom-Made Monitor for Easy High-Frequency SSVEP Stimulation

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Advances in Computational Intelligence (IWANN 2019)

Abstract

In this paper, we present and evaluate a special Custom-Made Computer Display (CMCD) with additional background light, which is separately controlled in order to create visual stimuli for Brain-Computer Interfaces (BCIs). While the monitor itself is working with a 60 Hz refresh rate, twelve strips of LED lights that are placed in between the backlight allow for a higher frequency flickering than any flickering object on a conventional screen. The goal of this study is to evaluate the effectiveness of this CMCD, which is mostly based on a change in intensity rather than in contrast. Therefore, we compared the responses to both types of flickering at different frequency ranges, while also measuring the speed and accuracy of the BCI with short spelling tasks. The CMCD LED illumination yielded slightly superior performance in terms of offline ITR in comparison to the standard flickering.

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Acknowledgment

This research was funded by the European Fund for Regional Development (EFRD - or EFRE in German) under Grants GE-1-1-047 and IT-1-2-001. We thank all the participants of this research study as well as our student assistants.

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Correspondence to Ivan Volosyak .

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Benda, M. et al. (2019). Custom-Made Monitor for Easy High-Frequency SSVEP Stimulation. In: Rojas, I., Joya, G., Catala, A. (eds) Advances in Computational Intelligence. IWANN 2019. Lecture Notes in Computer Science(), vol 11506. Springer, Cham. https://doi.org/10.1007/978-3-030-20521-8_32

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  • DOI: https://doi.org/10.1007/978-3-030-20521-8_32

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-20520-1

  • Online ISBN: 978-3-030-20521-8

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