Tester (SART) software (Shadmehr and Amiri, 2012). Inter-
rater and Intra-rater reliability of the SART software had
already been assessed (Nuri et al., 2012). This custom-
made software was installed on a laptop computer which
was connected to a 24 inch LCD monitor and a four button
joystick. The participants were asked to sit 2 m away from
and in front of the LCD screen which was used for displaying
RT tests.