Table 3.
General data from studies of tRNS included in the review.
| References | Study type | Intervention | Sample size | Stimulation area | Intensity (mA) | Stimulation (min) | Frequency (Hz) | Scheme | Outcome |
|---|---|---|---|---|---|---|---|---|---|
| Joos et al.86 | Cohort | tRNS | 154 | AC | 2 | 20 | 0.1–100 | 1 session | Positive: 0.1–100, 100–640 Hz |
| 100–640 | Negative: 0.1–640 Hz | ||||||||
| 0.1–640 | |||||||||
| Kreuzer et al.88 | Cohort | tRNS | 30 | AC | 2 | 20 | 100–640 | 10 sessions | Negative |
| Mohsen et al.87 | RCT | tRNS | 29 | AC + DLPFC | 2 | 20 | 0.1–100 | 1 session/8 sessions | Positive |
| 100–640 | |||||||||
| To et al.64 | RCT | tDCS | 40 | DLPFC (tDCS) | tDCS: 1.5 | tDCS: 20 | 0.1–100 | 8 sessions | Positive |
| tDCS + tRNS | AC (tRNS) | tRNS: 2 | tRNS: 20 | ||||||
| Claes et al.82 | Cohort | tACS, tRNS | 228 | AC | 2 | 20 | tACS (6–13) | 8 sessions | Positive |
| tRNS (0.1–100) | |||||||||
| Vanneste et al.55 | RCT | tACS | 111 | AC | 1.5 | 20 | tACS (6–13) tRNS (0.1–100) |
1 session | Positive |
| tDCS | |||||||||
| tRNS |
AC, auditory cortex; DLPFC, dorsolateral prefrontal cortex; RCT, randomized controlled trial; tACS, transcranial alternating current stimulation; tDCS, transcranial direct current stimulation; tRNS, transcranial random noise stimulation.