Trial Outcomes & Findings for Transcranial Brain Stimulation and Its Underlying Neural Mechanisms as a Novel Treatment for Auditory Hallucinations (NCT NCT02769507)

NCT ID: NCT02769507

Last Updated: 2026-05-19

Results Overview

Self-report measure for severity of hallucinations; consists of seven items; Sum can range from 2 to 41; higher values indicate more severe hallucinations

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

24 participants

Primary outcome timeframe

Change from Baseline to immediately after treatment and 3 months after treatment

Results posted on

2026-05-19

Participant Flow

Participant milestones

Participant milestones
Measure
Real tDCS
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Overall Study
STARTED
13
11
Overall Study
COMPLETED
11
10
Overall Study
NOT COMPLETED
2
1

Reasons for withdrawal

Reasons for withdrawal
Measure
Real tDCS
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Overall Study
Participants found particiption too challenging
2
1

Baseline Characteristics

Transcranial Brain Stimulation and Its Underlying Neural Mechanisms as a Novel Treatment for Auditory Hallucinations

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Real tDCS
n=11 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=10 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Total
n=21 Participants
Total of all reporting groups
Race (NIH/OMB)
Asian
0 Participants
n=30 Participants
0 Participants
n=30 Participants
0 Participants
n=60 Participants
Age, Categorical
<=18 years
0 Participants
n=30 Participants
0 Participants
n=30 Participants
0 Participants
n=60 Participants
Age, Categorical
Between 18 and 65 years
10 Participants
n=30 Participants
10 Participants
n=30 Participants
20 Participants
n=60 Participants
Age, Categorical
>=65 years
1 Participants
n=30 Participants
0 Participants
n=30 Participants
1 Participants
n=60 Participants
Age, Continuous
38 years
n=30 Participants
33 years
n=30 Participants
36 years
n=60 Participants
Sex: Female, Male
Female
3 Participants
n=30 Participants
4 Participants
n=30 Participants
7 Participants
n=60 Participants
Sex: Female, Male
Male
8 Participants
n=30 Participants
6 Participants
n=30 Participants
14 Participants
n=60 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=30 Participants
0 Participants
n=30 Participants
0 Participants
n=60 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=30 Participants
0 Participants
n=30 Participants
0 Participants
n=60 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=30 Participants
0 Participants
n=30 Participants
0 Participants
n=60 Participants
Race (NIH/OMB)
White
11 Participants
n=30 Participants
10 Participants
n=30 Participants
21 Participants
n=60 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=30 Participants
0 Participants
n=30 Participants
0 Participants
n=60 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=30 Participants
0 Participants
n=30 Participants
0 Participants
n=60 Participants

PRIMARY outcome

Timeframe: Change from Baseline to immediately after treatment and 3 months after treatment

Self-report measure for severity of hallucinations; consists of seven items; Sum can range from 2 to 41; higher values indicate more severe hallucinations

Outcome measures

Outcome measures
Measure
Real tDCS
n=11 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=9 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Auditory Hallucination Rating Scale (AHRS)
Immediately after treatment
26.82 AHRS total score
Standard Deviation 8.159
20.89 AHRS total score
Standard Deviation 7.219
Auditory Hallucination Rating Scale (AHRS)
3 month follow-up
23.55 AHRS total score
Standard Deviation 7.271
21.56 AHRS total score
Standard Deviation 5.703
Auditory Hallucination Rating Scale (AHRS)
Before treatment
30.00 AHRS total score
Standard Deviation 4.980
24.33 AHRS total score
Standard Deviation 4.183

PRIMARY outcome

Timeframe: Change from Baseline to immediately after treatment

Measure for changes in severity of auditory hallucinations; participants rated in percent how much their symptoms had improved (or worsened). The range is thus -100 (symptoms reduced by 100%) to +100 (symptoms worsened by 100%)

Outcome measures

Outcome measures
Measure
Real tDCS
n=11 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=9 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Hallucination Change Scale (HCS)
-24.9 percentage
Standard Deviation 34
-21.7 percentage
Standard Deviation 28

SECONDARY outcome

Timeframe: Change from Baseline to immediately after treatment and 3 months after treatment

Positive Sum Score; conducted by clinical rater; consists of 10 items, range 7-49; higher scores indicate more severe symptoms

Outcome measures

Outcome measures
Measure
Real tDCS
n=11 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=10 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Positive and Negative Syndrome Scale (PANSS)
Before treatment
18.45 Positive sum score
Standard Deviation 6.393
19.20 Positive sum score
Standard Deviation 4.962
Positive and Negative Syndrome Scale (PANSS)
Immediately after treatment
17.82 Positive sum score
Standard Deviation 5.879
14.70 Positive sum score
Standard Deviation 9.476
Positive and Negative Syndrome Scale (PANSS)
3 month follow-up
18.36 Positive sum score
Standard Deviation 6.439
17.60 Positive sum score
Standard Deviation 5.777

SECONDARY outcome

Timeframe: Change from Baseline to immediately after treatment and 3 months after treatment

Measure of executive functioning, Stroop condition #3 in seconds; higher values indicate longer task duration and worse performance

Outcome measures

Outcome measures
Measure
Real tDCS
n=7 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=7 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Stroop Task
Before treatment
73 seconds
Standard Deviation 22
77 seconds
Standard Deviation 21
Stroop Task
Immediately after treatment
66 seconds
Standard Deviation 12
63 seconds
Standard Deviation 11
Stroop Task
3 month follow-up
80 seconds
Standard Deviation 25
69 seconds
Standard Deviation 14

SECONDARY outcome

Timeframe: Change from Baseline to immediately after treatment and 3 months after treatment

Measure of visuomotor speed

Outcome measures

Outcome measures
Measure
Real tDCS
n=7 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=7 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Trailmaking Test B
Before treatment
133 seconds
Standard Deviation 41
93 seconds
Standard Deviation 48
Trailmaking Test B
Immediately after treatment
110 seconds
Standard Deviation 53
82 seconds
Standard Deviation 36
Trailmaking Test B
3 month follow-up
153 seconds
Standard Deviation 141
86 seconds
Standard Deviation 27

SECONDARY outcome

Timeframe: Before, immediately after treatment, and at 3 month follow-up

Total sum of AES score; consists of 18 items; range 18-72, higher values indicate higher degree of apathy

Outcome measures

Outcome measures
Measure
Real tDCS
n=11 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=9 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Apathy Evaluation Scale
Before treatment
47.55 score on a scale
Standard Deviation 8.560
46.11 score on a scale
Standard Deviation 11.805
Apathy Evaluation Scale
Immediately after treatment
51.82 score on a scale
Standard Deviation 8.400
40.56 score on a scale
Standard Deviation 19.372
Apathy Evaluation Scale
3 month follow-up
52.45 score on a scale
Standard Deviation 11.544
47.56 score on a scale
Standard Deviation 8.876

SECONDARY outcome

Timeframe: Change from Baseline to immediately after treatment and 3 months after treatment

Measure of global functioning; rated by clinician on a 7-point scale, with the severity of illness scale rated from 1 (normal) through to 7 (most severely ill)

Outcome measures

Outcome measures
Measure
Real tDCS
n=11 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=9 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
The Clinical Global Impressions Scale - Severity
Before treatment
4.91 score on a scale
Standard Deviation 0.831
4.56 score on a scale
Standard Deviation 0.527
The Clinical Global Impressions Scale - Severity
Immediately after treatment
5.00 score on a scale
Standard Deviation 0.632
4.44 score on a scale
Standard Deviation 0.726
The Clinical Global Impressions Scale - Severity
3 month follow-up
4.91 score on a scale
Standard Deviation 0.701
4.44 score on a scale
Standard Deviation 1.130

SECONDARY outcome

Timeframe: Change from Baseline to immediately after treatment and 3 months after treatment

Measure of global functioning - Symptoms, rated by clinician; measures how much a person's symptoms affect their day-to-day life on a scale of 0 to 100, where 0 is severely impacted in daily life by symptoms and 100 is not affected at all

Outcome measures

Outcome measures
Measure
Real tDCS
n=11 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=9 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Global Assessment of Functioning - S
Before treatment
43.27 score on a scale
Standard Deviation 12.618
46.22 score on a scale
Standard Deviation 8.541
Global Assessment of Functioning - S
Immediately after treatment
42.91 score on a scale
Standard Deviation 11.691
45.44 score on a scale
Standard Deviation 9.382
Global Assessment of Functioning - S
3 month follow-up
42.55 score on a scale
Standard Deviation 12.201
44.00 score on a scale
Standard Deviation 11.079

SECONDARY outcome

Timeframe: Change from Baseline to immediately after treatment and 3 months after treatment

Measure of executive functioning, forced left condition, percentage reported from left ear

Outcome measures

Outcome measures
Measure
Real tDCS
n=9 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=8 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Dichotic Listening Paradigm
Before treatment
19.63 percentage correct left ear reports
Standard Deviation 15.32
25.83 percentage correct left ear reports
Standard Deviation 22.52
Dichotic Listening Paradigm
Immediately after treatment
20.37 percentage correct left ear reports
Standard Deviation 18.89
22.5 percentage correct left ear reports
Standard Deviation 19.74
Dichotic Listening Paradigm
3 month follow-up
16.67 percentage correct left ear reports
Standard Deviation 19.41
22.5 percentage correct left ear reports
Standard Deviation 20.76

SECONDARY outcome

Timeframe: Change from Baseline to immediately after treatment and 3 months after treatment

Measure of language lateralization, laterality index in non-forced condition, laterality index is computed according to formula: LI=\[(R-L)/(R+L)\]\*100, where "L" and "R" are the number of correct left and right ear responses, respectively. values can range between -100 (only syllables from left ear correctly reported and +100 (only correct syllables from right ear reported)

Outcome measures

Outcome measures
Measure
Real tDCS
n=6 Participants
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=5 Participants
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Dichotic Listening Laterality Index
Before treatment
-14.66 laterality index, non-forced condition
Standard Deviation 33.75
-0.45 laterality index, non-forced condition
Standard Deviation 7.89
Dichotic Listening Laterality Index
Immediately after treatment
-1.45 laterality index, non-forced condition
Standard Deviation 40.93
9.15 laterality index, non-forced condition
Standard Deviation 20.79
Dichotic Listening Laterality Index
3 month follow-up
22.86 laterality index, non-forced condition
Standard Deviation 14.73
7.58 laterality index, non-forced condition
Standard Deviation 28.86

Adverse Events

Real tDCS

Serious events: 0 serious events
Other events: 13 other events
Deaths: 0 deaths

Sham tDCS

Serious events: 0 serious events
Other events: 11 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Real tDCS
n=13 participants at risk
DC Stimulator PLUS (NeuroConn) The real tDCS condition comprises two daily sessions of 20 min tDCS, separated by a minimum break of 3h, for five consecutive days. Anodal and cathodal tDCS will be applied with 2mA to the left dorsolateral prefrontal cortex (a point midway between F3 and FP1) and the left peri-Sylvian region (a point midway between T3 and P3), respectively. Electrode size is 7cm x 5cm. DC Stimulator PLUS (NeuroConn)
Sham tDCS
n=11 participants at risk
DC Stimulator PLUS (NeuroConn) The sham condition is identical to the "real tDCS" condition except that after 40s of tDCS stimulation is going to be reduced to a small pulse every 550msec (110 μA over 15 msec) through the remainder of the 20 minute period. DC Stimulator PLUS (NeuroConn)
Psychiatric disorders
Participant stopped treatment
15.4%
2/13 • Number of events 2 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
9.1%
1/11 • Number of events 1 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
General disorders
Headache
23.1%
3/13 • Number of events 8 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
36.4%
4/11 • Number of events 17 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
General disorders
neck pain
7.7%
1/13 • Number of events 1 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
45.5%
5/11 • Number of events 25 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
General disorders
scalp pain
23.1%
3/13 • Number of events 14 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
27.3%
3/11 • Number of events 14 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
General disorders
tingling
76.9%
10/13 • Number of events 67 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
63.6%
7/11 • Number of events 30 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
General disorders
itching
69.2%
9/13 • Number of events 39 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
45.5%
5/11 • Number of events 24 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
General disorders
burning sensation
30.8%
4/13 • Number of events 38 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
63.6%
7/11 • Number of events 38 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
General disorders
skin redness
53.8%
7/13 • Number of events 40 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
9.1%
1/11 • Number of events 2 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
General disorders
sleepiness
38.5%
5/13 • Number of events 20 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
63.6%
7/11 • Number of events 28 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
General disorders
trouble concentrating
23.1%
3/13 • Number of events 26 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
36.4%
4/11 • Number of events 13 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
General disorders
acute mood change
15.4%
2/13 • Number of events 3 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session
18.2%
2/11 • Number of events 12 • 3 months after treatment
Data on adverse events was collected with a questionnaire based on Brunoni, A. R., Amadera, J., Berbel, B., Volz, M. S., Rizzerio, B. G., \& Fregni, F. (2011). A systematic review on reporting and assessment of adverse effects associated with transcranial direct current stimulation. International Journal of Neuropsychopharmacology, 14(8), 1133-1145. https://doi.org/10.1017/s1461145710001690 that was completed after every tDCS session

Additional Information

Marco Hirnstein

University of Bergen

Phone: +47 555 86082

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place