Date of download: 6/26/2016 Copyright © 2016 SPIE. All rights reserved. Screen shots of an example stimulus on the prism array-based display. Although the displayed threatening picture is just an example, a threatening picture (International Affective Picture System number: 6313) was used to enhance the steady-state visually evoked potential amplitudes. Participants controlled the can of Coke by focusing their attention on a specific direction while ignoring the other directions. Figure Legend: From: Affective three-dimensional brain–computer interface created using a prism array- based display Opt. Eng. 2014;53(12): doi: /1.OE
Date of download: 6/26/2016 Copyright © 2016 SPIE. All rights reserved. Description of the two types of displays used in the experiment. (a) The stereoscopic liquid-crystal display (LCD) monitor. (b) The prism array-based display. (c) Details of the geometry of the prism array-based display. An optical ray passing through a prism is represented; the angle of deviation of an optical ray is defined by the angle between the direction of the incident ray and the direction of the refracted ray. The angle of each prism is 60 deg, and in this configuration, the angle of deviation cannot be <36 deg. The prism array guides the reflected light of the image on the LCD display with vertical directions so that it can be seen by participants. Figure Legend: From: Affective three-dimensional brain–computer interface created using a prism array- based display Opt. Eng. 2014;53(12): doi: /1.OE
Date of download: 6/26/2016 Copyright © 2016 SPIE. All rights reserved. Experimental procedure for experiment 1. SSVEP, steady-state visually evoked potential; BCI, brain–computer interface. Figure Legend: From: Affective three-dimensional brain–computer interface created using a prism array- based display Opt. Eng. 2014;53(12): doi: /1.OE
Date of download: 6/26/2016 Copyright © 2016 SPIE. All rights reserved. Screenshot of the map used in the navigational task, and specifications of the stimuli, including the visual angle, used in experiment 2. IAPS, International Affective Picture System. Figure Legend: From: Affective three-dimensional brain–computer interface created using a prism array- based display Opt. Eng. 2014;53(12): doi: /1.OE
Date of download: 6/26/2016 Copyright © 2016 SPIE. All rights reserved. Mean subjective ratings of realness and engagement as a function of display type. Figure Legend: From: Affective three-dimensional brain–computer interface created using a prism array- based display Opt. Eng. 2014;53(12): doi: /1.OE
Date of download: 6/26/2016 Copyright © 2016 SPIE. All rights reserved. Mean subjective ratings of three-dimensional (3-D) symptoms as a function of display type. Figure Legend: From: Affective three-dimensional brain–computer interface created using a prism array- based display Opt. Eng. 2014;53(12): doi: /1.OE
Date of download: 6/26/2016 Copyright © 2016 SPIE. All rights reserved. Mean positive predictive values and task completion times as a function of display type. Figure Legend: From: Affective three-dimensional brain–computer interface created using a prism array- based display Opt. Eng. 2014;53(12): doi: /1.OE
Date of download: 6/26/2016 Copyright © 2016 SPIE. All rights reserved. Mean subjective ratings for the realness and engagement factors as a function of display type. Figure Legend: From: Affective three-dimensional brain–computer interface created using a prism array- based display Opt. Eng. 2014;53(12): doi: /1.OE
Date of download: 6/26/2016 Copyright © 2016 SPIE. All rights reserved. Mean subjective ratings of 3-D symptoms as a function of display type. Figure Legend: From: Affective three-dimensional brain–computer interface created using a prism array- based display Opt. Eng. 2014;53(12): doi: /1.OE