Supporting code (experimental task) for "Frequency-tagged visual evoked responses track syllable effects in visual word recognition"

The experimental task that has been used to collect the data for "Frequency-tagged visual evoked responses track syllable effects in visual word recognition". The task allows presenting strings of letters flickering at the selected frequency. The string can be divided into different parts each of which flickering at a specific frequency.

The main structure was originally designed to present (uploaded) images, and therefore, it can be used to display different kinds of stimuli.

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