A. Depicts the experimental crossover study design. B. Demonstrates the study timeline showing when the primary and secondary outcomes were collected, as well as the days participants received electrical stimulation. C. Shows the stimulation coordinates in Montreal Neurologic Institute (MNI) space for the bilateral extrastriate visual cortex target, stimulation electrode montage (current intensity depicted in heatmap), and the current flow modeling (field intensity depicted in heatmap). Note: HD-tDCS, High-Definition Transcranial Direct Current Stimulation; HD-tACS, HHD-Transcranial Alternating Current Stimulation; EEG, Electroencephalogram; IAPS, International Affective Picture System; SSVEP, Steady State Visual Evoked Potential;