Transcranial alternating current stimulation reveals atypical 40 Hz phosphene thresholds in synaesthesia. by Terhune, D, Song, S, Cohen Kadosh, R

Enhanced cortical excitability in grapheme-color synesthesia and its modulation. by Terhune, D, Tai, S, Cowey, A, Popescu, T, Cohen Kadosh, R

“…Using transcranial magnetic stimulation, we show that synesthetes display 3-fold lower phosphene thresholds than controls during stimulation of the primary visual cortex. …”