In this paper we present our first study using LCD shutter glasses to generate SSVEPs whilst walking:
Final version is published in the Journal of Neuroscience Methods;
An earlier version is available on biorxiv.
Summary:
• SSVEPs of real world environments can be generated using modified LCD glasses.
• The amplitude of SSVEPs over right parietal cortex was reduced by walking.
• The waveform of the SSVEPs was sensitive to the illumination of the room.
• “Simulated SSVEPs” show that SSVEPs can be accurately recovered during walking.
• This method can potentially generate SSVEPs at a wide range of frequencies.
Participants viewed a room whilst standing and walking. Either the left or right side of the room was illuminated, to test if it is possible to recover the resulting SSVEPs when walking, as well as to probe the effect of walking on neural activity.
The waveform and phase of the SSVEPs is highly preserved between walking and standing, but was sensitive to whether visual stimulation was presented to the left or right visual hemifield.