Transcranial Direct Current Stimulation and Antisocial Behavior
Aggression
About this trial
This is an interventional basic science trial for Aggression focused on measuring transcranial direct curren stimulation, antisocial behavior
Eligibility Criteria
Inclusion Criteria:
- Above 18 (with parental consent) or above 21 (without parental consent)
- Able to understand the nature of the study and give informed consent
Exclusion Criteria:
- History of or active neurologic, cardiovascular, or psychiatric disease including anxiety disorders (e.g., PTSD, panic attacks, obsessive-compulsive disorder) and mood disorders (e.g., depression)
- Currently consuming anti-convulsant, anti-psychotic, or sedative/hypnotic medications
- Currently consuming anti-depressants
- History of seizures
- Metallic implants on scalp
- Participated in any other non-invasive brain stimulation study in the same day
- Ever had an adverse reaction to tDCS
Sites / Locations
- Nanyang Technological University
Arms of the Study
Arm 1
Arm 2
Experimental
Sham Comparator
Anodal stimulation
Sham stimulation
Participants in the active stimulation group will undergo anodal transcranial direct current stimulation (tDCS). tDCS will be delivered by a battery-driven, constant-current stimulator connected to two saline-soaked surface sponge electrodes. An anodal electrode (25cm2) will be placed over the ventromedial prefrontal cortex and one cathodal electrode (35cm2) will be placed over the occipital cortex. Scalp electrodes will be positioned according to the 10-20 EEG international system. A current of 2mA will be applied for 20 minutes and the current will be ramped up and down over 30 seconds at the beginning and end of the stimulation period.
The sham tDCS condition will involve the same placement of the electrodes, current intensity, and ramp-up/down time as the active tDCS condition, but stimulation will only last for 30 seconds.