Table 3.

Summary of clinical studies on post-stroke patients using tACS.

Study	No.	Targeted lesion	Study design	Frequency	Peak current intensity	Location	Schedule	Follow-up	Outcomes
Gall et al, 2015 [68]	20 (20)	Unilateral occipital stroke	RCT	30 Hz	1.5 mA	Frontal pole midline point	20 min daily for 10 days	2 months	Visual field change positively
Wu et al, 2016 [66]	60 (30)	Subacute stroke	RCT	20 Hz	400 μA	bilateral mastoids	30 min daily for 3 weeks	N/A	NIHSS and the TCD parameters (MFV, PI) in MCAs, ACAs, and PCAs positive
Räty et al, 2021 [67]	9 (9)	Hemianopia after chronic stroke	RCT	5–15 Hz	1.5 mA	Bilateral frontal pole	30 min during days 1–5 and 40 min during days 6–10	2 months	No difference in the median detection accuracy

NIHSS – NIH Stroke Scale; TCD – Transcranial Doppler; MCA – middle cerebral artery; ACA – anterior cerebral artery; PCA – posterior cerebral artery; MFV – mean flow velocity; PI – pulsatility index.