Alpha transcranial alternating current stimulation modulates auditory perception

Studies using transcranial alternating current stimulation (tACS), a type of non-invasive brain stimulation, have demonstrated a relationship between the positive versus negative phase of both alpha and delta/theta oscillations with variable near-threshold auditory perception. These findings have not been directly compared before. Furthermore, as perception was better in the positive versus negative phase of two different frequencies, it is unclear whether changes in polarity (independent of a specific frequency) could also modulate auditory perception.

Source: BRAIN STIMULATION: Basic, Translational, and Clinical Research in Neuromodulation - November 7, 2023 Category: Neurology Authors: Sreekari Vogeti, Maryam Faramarzi, Christoph S. Herrmann Source Type: research