Transcranial stimulation and EEG (IMAGE) Université de Genève Caption Transcranial alternating current stimulation device consists of 5 electrodes (black) placed over the left auditory cortex, each delivering a low-intensity current. Researchers measured both reading abilities and brain activity through electroencephalography (green and white electrodes). Credit UNIGE/Silvia Marchesotti Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.