Painting with the Eye: Understanding The Visual Field of the Human Eye with SSVEP

Autor: Yi Summer Tao, Kai Wen Zheng, Steve Mann, Yi Liu, Danson Evan Garcia
Rok vydání: 2020
Předmět:
Zdroj: SMC
DOI: 10.1109/smc42975.2020.9283476
Popis: We present an investigation into the relationship between steady-state visually-evoked potentials (SSVEPs) and the magnitude, distance, shape, and spatial location of the flashing stimulus relative to the participant. We use a wearable electroen-cephalography (EEG) device with the addition of an external occipital electrode for the experiments. SSVEP responses are extracted using the lock-in amplifier and fast Fourier transform algorithms. We then map the responses to what the human eye sees. Our experiments pinpoint the optimal range of stimulus parameters required for stable SSVEP response, identify failure states for flashing stimulus, as well as create a visual map, a vidmap, of the participant’s ability to see. The results show that locating the stimulus at the participant’s central vision elicits stronger SSVEP response compared to the peripheral vision.
Databáze: OpenAIRE