Open
Description
Paper
Link: https://www.frontiersin.org/articles/10.3389/fnhum.2019.00127/full
Year: 2019
Summary
radial zoom motion-based SSMVEP paradigm achieves slightly lower accuracy than flicker, but its comfort score and fatigue score is much better than flicker stimulus.
Methods
- 8 subjects
- 8 targets, frequency of 8–15Hz and frequency interval of 1 Hz
- 40 trials with five trials for each target
- tested on 6 stimulus types, test accuracy, ITR, comfort and fatigue
- foveal test, red “+” symbol appeared randomly at the location of the stimulus target for a duration of 0.5 s, then the block of the corresponding position was presented for 4s
Results
- the half harmonic component induced by SSMVEP was significant
- Due to the depth perception of the human eye (Chang et al., 2014), the zoom motion paradigm causes a space movement sensation
- Newton’s ring motion may not be suitable for a multiple target BCI system, may be related to its complicated graphic and motion patterns