article_snippet.sent: Researchers placed electrodes on each side of each participant's frontal scalp and a third electrode toward the back of each participant's frontal scalp.
article_snippet.sent: During one session, researchers used a 10-Hertz sham stimulation for just five minutes.
article_snippet.sent: Participants felt a tingle at the start of the five minutes.
article_snippet.sent: In the other session each participant underwent the same protocol, except Participants were stimulated at 10 Hertz for the entire 30 minutes while doing the Torrance test.
article_snippet.sent: The tingling sensation only occurred at the start of the stimulation, ensuring that each participant did not know which session was the control session.
article_snippet.sent: It was a very clear effect.' '
article_snippet.sent: We did a well-controlled, one-time study and found an acute effect.' '