Visual stimulation system, visual stimulation production method and a BCI (brain-computer interface) system

Abstract

The invention discloses a visual stimulation system, a visual stimulation production method and a BCI (brain-computer interface) system. The visual stimulation system comprises a first display screen system and a second display screen system. The first display screen system comprises a first display screen and a first control host connected with the same; the first display screen is an LCD-based transparent display. The second display screen system comprises a second display screen and a second control host connected with the same. The second display screen is arranged at the right back of the first display screen and is spaced from the first display screen; the orthogonal projection of the second display screen on the first display screen completely locates on the first display screen; the angle of polarization of light emitted from the second display screen is consistent with that of light emitted from the side, opposite to the second display screen, of the first display screen. By the perspective transparent display, the front visual stimulation and the back visual stimulation are superposed to stimulate the people under test, diversity of the visual stimulation is expanded while new type of stimulation can be produced by combination of different visual stimulation.

Description

technical field [0001] The invention relates to the technical field of human-computer interaction, in particular to a visual stimulation system, a visual stimulation generation method and a BCI system. Background technique [0002] Mobile phones and computers are gradually changing people's living habits, and the time investment in these two has begun to exceed traditional TV and books. And with the development of technology, more and more derivatives such as ipad, kindle, etc. continue to emerge. Among the many technologies developed around mobile phones and computers, the type or mode of operation is the most eye-catching link. For mobile phones, the initial button control has transitioned to pen control, and finally entered the era of finger touch. For computers, the combination of keyboard and mouse has always provided users with a convenient operating experience. The wireless mouse and infrared control technology that appeared in the later period also made computer op...

AI Technical Summary

Problems solved by technology

However, the EEG signals used for BCI are inseparable from visual stimuli. Most of the current visual stimuli are provided by a single visual stimulation screen. There are few types of visual stimuli and it is easy to generate wrong instructions.

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