VEPdgets: Towards Richer Interaction Elements Based on Visually Evoked Potentials

  • For brain–computer interfaces, a variety of technologies and applications already exist. However, current approaches use visual evoked potentials (VEP) only as action triggers or in combination with other input technologies. This paper shows that the losing visually evoked potentials after looking away from a stimulus is a reliable temporal parameter. The associated latency can be used to control time-varying variables using the VEP. In this context, we introduced VEP interaction elements (VEP widgets) for a value input of numbers, which can be applied in various ways and is purely based on VEP technology. We carried out a user study in a desktop as well as in a virtual reality setting. The results for both settings showed that the temporal control approach using latency correction could be applied to the input of values using the proposed VEP widgets. Even though value input is not very accurate under untrained conditions, users could input numerical values. Our concept of applying latency correction to VEP widgets is not limited toFor brain–computer interfaces, a variety of technologies and applications already exist. However, current approaches use visual evoked potentials (VEP) only as action triggers or in combination with other input technologies. This paper shows that the losing visually evoked potentials after looking away from a stimulus is a reliable temporal parameter. The associated latency can be used to control time-varying variables using the VEP. In this context, we introduced VEP interaction elements (VEP widgets) for a value input of numbers, which can be applied in various ways and is purely based on VEP technology. We carried out a user study in a desktop as well as in a virtual reality setting. The results for both settings showed that the temporal control approach using latency correction could be applied to the input of values using the proposed VEP widgets. Even though value input is not very accurate under untrained conditions, users could input numerical values. Our concept of applying latency correction to VEP widgets is not limited to the input of numbers.show moreshow less

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Metadaten
Author:Philipp WolfORCiD, Timo GötzelmannORCiD
DOI:https://doi.org/10.3390/s23229127
ISSN:1424-8220
Parent Title (English):Sensors
Publisher:MDPI AG
Document Type:Article
Language:English
Date of first Publication:2023/11/12
Reviewed:Begutachtet/Reviewed
Release Date:2024/11/11
Tag:brain–computer interface; BCI; VEP; interaction; HCI; interaction elements; control elements; controls; widgets; VEP-widget
Volume:23
Issue:22
Article Number:9127
institutes:Fakultät Informatik
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International
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