Skip to main content
. Author manuscript; available in PMC: 2008 Nov 1.
Published in final edited form as: Int J Psychophysiol. 2007 May 3;66(2):161–167. doi: 10.1016/j.ijpsycho.2007.03.021

1.

1

Schematic depiction of stimuli used in the rotated-heads visual oddball task. Non-targets (bottom) occurred on 160 trials and required no response. Each of the four target stimuli was presented on 20 trials; for these stimuli, the participant pressed a button with either the left or right hand to indicate the side of the head on which the ear was positioned. For easy head targets (top), the nose was pointed up and thus the correct button response (“left” or “right”) corresponded directly to the side of the screen on which the ear appeared. For hard targets (middle), the nose was pointed down and thus the correct button response was opposite to the side of the screen on which the ear appeared.