Supplementary data for the paper 'Assessing the influence of visual stimulus properties on steady-state visually evoked potentials and pupil diameter'

DOI:10.4121/624445db-e312-495c-a9d9-c467d9f98eee.v1
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DOI: 10.4121/624445db-e312-495c-a9d9-c467d9f98eee

Datacite citation style

Eisma, Yke Bauke; Van Vliet, Sjoerd; Nederveen, Aart; de Winter, Joost (2024): Supplementary data for the paper 'Assessing the influence of visual stimulus properties on steady-state visually evoked potentials and pupil diameter'. Version 1. 4TU.ResearchData. dataset. https://doi.org/10.4121/624445db-e312-495c-a9d9-c467d9f98eee.v1
Other citation styles (APA, Harvard, MLA, Vancouver, Chicago, IEEE) available at Datacite

Dataset

Steady-State Visual Evoked Potentials (SSVEPs) are brain responses measurable via electroencephalography (EEG) in response to continuous visual stimulation at a constant frequency. SSVEPs have been instrumental in advancing our understanding of human vision and attention, as well as in the development of brain-computer interfaces (BCIs). Ongoing questions remain about which type of visual stimulus causes the most potent SSVEP response. The current study investigated the effects of color, size, and flicker frequency on the signal-to-noise ratio of SSVEPs, complemented by pupillary light reflex measurements obtained through an eye-tracker. Six participants were presented with visual stimuli that differed in terms of color (white, red, green), shape (circles, squares, triangles), size (10,000 to 30,000 pixels), flicker frequency (8 to 25 Hz), and grouping (one stimulus at a time vs. four stimuli presented in a 2×2 matrix to simulate a BCI). The results indicated that larger stimuli elicited stronger SSVEP responses and more pronounced pupil constriction. Additionally, the results revealed an interaction between stimulus color and flicker frequency, with red being more effective at lower frequencies and white at higher frequencies. Future SSVEP research could focus on the recommended waveform, interactions between SSVEP and power grid frequency, a wider range of flicker frequencies, a larger sample of participants, and a systematic comparison of the information transfer obtained through SSVEPs, pupil diameter, and eye movements.

History

  • 2024-10-16 first online, published, posted

Publisher

4TU.ResearchData

Format

script/m; data/mat; data/txt; data/xlsx; videos/mp4; videos/mov; instructions/docx

Organizations

TU Delft, Faculty of Mechanical Engineering, Department of Cognitive Robotics
Amsterdam UMC Location AMC, Department of Radiology and Nuclear Medicine

DATA

Files (7)