99 results about "Steady state visually evoked potential" 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.

The invention discloses a mobile phone music playing system based on the steady-state visual evoked potential (SSVEP). The mobile phone music playing system includes a visual stimulation module, a signal acquisition module, a signal processing module, a real-time transmission module and a music playing module. The visual stimulation module provides a user with SSVEP evoked potential visual stimulation in an LCD display manner or the like. The signal acquisition module acquires brain electrical signal data and transmits to a data processing program. The signal processing module performs baseline drift removal, filtering, CCA analysis and feature extraction of signals by using the data processing program, and determines a desired operation of the user. The real-time transmission module transmits an analysis result to a mobile phone via the Internet or Bluetooth or WiFi. The music playing module reacts accordingly. The method provided by the invention requires no body movement of the user, the user only needs to watch the LCD, CRT, HDU or other screen, and through analysis of the acquired brain electrical signals, the control of the mobile phone music player by the user can be achieved.