Cohen Kadosh and his colleagues had previously shown that another form of brain stimulation could make people better at learning and processing new numbers.
Gitai says at the time he made Kadosh there was a controversy in Israel over whether the state should follow Jewish law and prohibit marriages between couples of different religions.
Dr Roi Cohen Kadosh, study author from the department of experimental psychology at the University of Oxford, said the noise stimulation group showed improvements in cognitive and brain functions compared with the control group.
Cohen Kadosh added that it was important to identify any downsides of this and other similar forms of transcranial electrical stimulation to ensure that boosting one cognitive ability did not lead to damage in another.