Effects of Transcranial Electrical Stimulation (tES) on Perception and Cognition Study

UBC researchers are recruiting paid participants for a transcranial electrical stimulation (tES) study on perception and cognition. 

The Psychophysics and Cognitive Neuroscience Laboratory, led by Dr. Lawrence Ward, is looking for volunteers to participate in a study of the effects of transcranial electrical stimulation (tES) on perception and cognition. This will involve viewing and responding to visual stimuli presented on a computer screen while you receive weak electrical stimulation on the scalp.

Study Purpose

This study’s aim is to better understand human perception and cognition, its underlying brain mechanisms, and how those can be influenced by electrical stimulation of the brain through the scalp.

Study Procedure

The experiment will consist of two 1.5-hour sessions, and you will receive $10 for each hour of participation ($30 total).


To be eligible to participate you must NOT:

  • Have magnetizable metal in your brain/skull
  • Have cochlear implants
  • Have an implanted neurostimulator
  • Have a history of seizures (epilepsy)
  • Be suffering from a neurological or psychiatric disorder
  • Be suffering from a skin disease
  • Be allergic to lidocaine (topical anesthetic)
  • Be pregnant
  • Be taking psychotropic medicines


If you are interested in participating or have any questions, please contact Aakanksha Sahu at wardlab@psych.ubc.ca