40 results about "Visual stimulator" patented technology

A brain-computer interface-based telephone system for double-upper limb disabled people is provided. The brain-computer interface-based telephone system comprises a visual stimulator, an electroencephalography acquisition platform, a system control and data processing unit, a telephone control module and a telephone set; when a user watches a certain LED of the visual stimulator, a steady-state visual evoked potential is generated in a specific area of the brain of the user; the electroencephalography acquisition platform acquires electroencephalography signals in a real-time manner; after being subjected to amplification, filtering and analog-to-digital conversion, the electroencephalography signals are inputted to the system control and data processing unit; the system control and data processing unit processes the electroencephalography signals in a real-time manner so as to detect the frequency of the steady-state visual evoked potential signals, identify the LED display watched by the user, and transmit a command corresponding to the display to the telephone control module; and the telephone control module controls the telephone system and makes the same execute corresponding operation according to the received control command. According to the brain-computer interface-based telephone system for the double-upper limb disabled people of the invention, operation intentions can be expressed through vision, and therefore, body movements of the user can be avoided. The brain-computer interface-based telephone system for the double-upper limb disabled people is advantageous in natural operation, easiness in use, high accuracy in dialing, stable work and almost no need for training users. With the brain-computer interface-based telephone system for the double-upper limb disabled people, basic functions of telephone communication can be realized.