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VEP-based brain-computer interfaces: time, frequency, and code modulations [Research Frontier

Bin, Guangyu, Gao, Xiaorong, Wang, Yijun, Hong, Bo, Gao, Shangkai·2009·IEEE Computational Intelligence Magazine

Abstract

A brain computer interface (BCI) translates human intentions into control signals to establish a direct communication channel between the human brain and external devices. Because a BCI does not depend on the brain's normal output pathways of peripheral nerves and muscles, it can provide a new communication channel to people with severe motor disabilities. Electroencephalograms (EEGs) recorded from the surface of the scalp are widely used in current BCIs for their non-invasive nature and easy applications. Among EEG based BCIs, systems based on visual evoked potentials (VEPs) have received widespread attention in recent decades. We described the three stimulus modulation approaches used in current VEP based BCIs: time modulation (t-VEP), frequency modulation (f-VEP), and pseudorandom code modulation (c-VEP). We then carried out a detailed comparison of system performance between an f-VEP BCI and a c-VEP BCI. The results show that an f-VEP BCI has the advantage of little or no training and simple system configuration, while the c-VEP based BCI has a higher communication speed. The stimulus modulation design is the crux of VEP based BCI systems.

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Metadata

Authors
Bin, G., Gao, X., Wang, Y., Hong, B., & Gao, S.
Venue
IEEE Computational Intelligence Magazine
Published
2009-11
Volume
4
Issue
4
Pages
22-26
ISSN
1556-603X (ISSN-L)
OpenAlex
W2121483555
Cited by
256
References
24
FWCI
3.81
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: VEP-based brain-computer interfaces: time, frequency, and code modulations [Research Frontier. https://app.cochat.ai/papers/10.1109/mci.2009.934562
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Bin, G., Gao, X., Wang, Y., Hong, B., & Gao, S. (2009). VEP-based brain-computer interfaces: time, frequency, and code modulations [Research Frontier. IEEE Computational Intelligence Magazine. https://doi.org/10.1109/mci.2009.934562

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