Mouli, Surej, Palaniappan, Ramaswamy, Sillitoe, Ian P., Gan, John Q. (2015) Quantification of SSVEP responses using multi-chromatic LED stimuli: Analysis on colour, orientation and frequency. In: Computer Science and Electronic Engineering Conference (CEEC). 7th Computer Science and Electronic Engineering Conference. . pp. 93-98. (doi:10.1109/CEEC.2015.7332706) (KAR id:56172)
PDF
Author's Accepted Manuscript
Language: English |
|
Download this file (PDF/397kB) |
|
Request a format suitable for use with assistive technology e.g. a screenreader | |
Official URL: http://doi.org/10.1109/CEEC.2015.7332706 |
Abstract
Most LED visual stimulators used in steady state visual evoked potential (SSVEP) brain-computer interface (BCI) use single LED sources to elicit SSVEP responses. In this study, we tested the hypothesis that different orientations would have different responses in different participants and aimed to develop a portable LED based stimulus design which consists of a small number of RGB LEDs arranged in a line which can be oriented horizontally or vertically. The colour and frequency of the flicker were controlled by a portable microcontroller platform. The study investigated the performance of the SSVEP from five participants when the LED stimulus was displayed vertically and horizontally for a period of 30 seconds. The frequency range used was from 7 Hz to 11 Hz with three primary colours: red, green and blue in both orientations. Furthermore, we also compared the effect of vertical and horizontal orientations using four different frequencies and three colours to test visual fatigue reduction. The results of the analysis using band-pass filtering and Fast Fourier Transform showed that the green horizontal LED stimulus orientation gave the highest response and viewing comfort in all the participants rather than the vertical orientation.
Item Type: | Conference or workshop item (Proceeding) |
---|---|
DOI/Identification number: | 10.1109/CEEC.2015.7332706 |
Subjects: |
Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming, > QA76.9.H85 Human computer interaction T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK7800 Electronics > TK7874 Microelectronics. Integrated circuits |
Divisions: | Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Computing |
Depositing User: | Palaniappan Ramaswamy |
Date Deposited: | 28 Jun 2016 16:34 UTC |
Last Modified: | 05 Nov 2024 10:46 UTC |
Resource URI: | https://kar.kent.ac.uk/id/eprint/56172 (The current URI for this page, for reference purposes) |
- Link to SensusAccess
- Export to:
- RefWorks
- EPrints3 XML
- BibTeX
- CSV
- Depositors only (login required):