TABLE 5.
Auditory scene analysis.
| References | Population | Paradigm | Stimulation type | Active electrode | References electrode | Stimulation parameters | Acquisition | Results |
| Lewald (2016) | Adults (Mage = 23.7) n = 74 | Sound localization | a-tDCS c-tDCS | 3.5 cm2 STG IPL SMC | 0.4 mA 0.01 mA/cm2 12 min | Online and Offline | No effect of bipolar tDCS on sound localization Left a-tDCS and right c-tDCS over STG improved spatial sound separation | |
| Deike et al. (2016) | Adults (age: 21–41) n = 22 | Auditory stream segregation | a-tDCS c-tDCS Sham | 35 cm2 T7 | 35 cm2 Contralateral supraorbital region | 1 mA 0.03 mA/cm2 15 min | Offline | a-tDCS reduced auditory segregation |
| Hanenberg et al. (2019) | Young adults (Mage = 24.3) n = 20 Older adults (Mage = 70.4) n = 19 | Sound localization (cocktail-party situation) | a-tDCS c-tDCS Sham | 35 cm2 C6-T8 | 98 cm2 Contralateral shoulder | 1 mA 0.03 mA/cm2 16 min | Offline | a-tDCS improved localization error in young adults |
| Lewald (2019) | Adults (Mage = 22.6) n = 22.6 | Sound localization (cocktail-party situation) | a-tDCS Sham | 35 cm2 C6-T8 and C5-T7 | 98 cm2 Shoulders | 1 mA 0.03 mA/cm2 30 min | Offline | a-tDCS improved localization of a target speaker in a simulated cocktail-party situation |
STG, Superior temporal gyrus; IPL, Inferior parietal lobule; SMC, Somatosensory motor cortex.