Abstract
Introduction. The objective of this ongoing study is to demonstrate that temporary changes in the power of gamma band oscillations can be induced in the auditory cortex of healthy participants with transcranial alternating current stimulation (tACS) by the Geodesic Transcranial Electrical Neuromodulation (GTEN) hardware (EGI, Eugene, OR, USA). An auditory stimulus presented at a frequency of 40Hz will lead to temporary increased power of the 40Hz brain oscillations in the auditory cortex, a phenomenon known as Auditory Steady-State Response (ASSR). Via the application of oscillating current to the scalp at a specific frequency, tACS has been shown to modulate brain oscillations, and temporarily increase the power of the applied frequency in the modulated region, thereby mimicking ASSR.
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