Abstract
Transcranial electrical stimulation (tES) can adjust the membrane potential by applying a weak current on the scalp to change the related nerve activity. In recent years, tES has proven its value in studying the neural processes involved in human behavior. The study of central auditory processes focuses on the analysis of behavioral phenomena, including sound localization, auditory pattern recognition, and auditory discrimination. To our knowledge, studies on the application of tES in the field of hearing and the electrophysiological effects are limited. Therefore, we reviewed the neuromodulatory effect of tES on auditory processing, behavior, and cognitive function and have summarized the physiological effects of tES on the auditory cortex.
Highlights
The development of neuroimaging technology made it possible to study how brain networks affect behavior and potential cognitive functions [1]
The data showed that cathodal stimulation of the right inferior frontal gyrus (IFG) and auditory cortex (AC) reduced the P3 amplitude induced by small pitch (6.25 cents) deviations compared to sham stimulation
Nine minutes after real and sham stimulation; Anodal stimulation of the temporal lobe increases the amplitude of auditory P50, cathodal stimulation of the temporo-parietal region increases the amplitude of N1
Summary
The development of neuroimaging technology made it possible to study how brain networks affect behavior and potential cognitive functions [1]. In cognitive and clinical treatment, tDCS is probably the most commonly used non-invasive tES method that applies weak currents of different intensities to brain tissue through electrodes (anode, cathode) that are placed on the scalp [7,8]. TACS applies a single frequency sinusoidal current [15] to regulate brain oscillations related to physiology at a specific frequency [16]. There is no accurate conclusion about the electrophysiological mechanism tES in the field of hearing and its influence on related brain behavior and cognitive function. Of tES in the fieldstudy, of hearing and its influence behavioral on related and brain behaviorfunctions and cognitive. In this study, we review tES-related behavioral and cognitive functions in the auditory field. Further rough screening excluded 63 articles related to transcranial electrical stimulation (tES) and auditory field.
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