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BCI2000：A GeneralPurpose Brain-Computer
Interface (BCI) System
Gerwin Schalk*, Member, IEEE, Dennis J. McFarland, Thilo Hinterberger, Niels Birbaumer, and Jonathan R.Wolpaw
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, VOL. 51, NO. 6, JUNE 2004
Presenter：Jung-Ting Jin
Adviser ：Dr. Shih-Chung Chen
Chairman ：Dr. Hung-Chi Yang
Date：December 31, 2014
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Outline
• Introduction
• BCI2000 System Design
• Initial Implementations of BCI2000
• Online Evaluation And Validation Of BCI2000
• Discussion
• Conclusion
• Reference
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Introduction
• Brain-Computer Interface (BCI) Technology
• For people with severe motor disabilities
• End-stage amyotrophic lateral sclerosis
• Brainstem stroke
• Severe polyneuropathy
Fig.1. Brain signals can be used to control a wheelchair .
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Introduction
• Brain-Computer Interface (BCI) Technology
Fig. 2. Basic design and operation of any BCI system.
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Introduction
• Further Development of BCI Technology
• Systematic well-controlled studies
• A general-purpose BCI research and development system
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BCI2000 System Design
• Essential Features
• Common Model
• Scalability
• Real-Time Capability
• Support and Facilitation of Offline Analyses
• Practicality
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BCI2000 System Design
• Modules
1. Source Module
2. Signal Processing Module
3.
4.
User Application Module
Operator Module
Fig. 3. BCI2000 design. BCI2000 consists of four modules
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BCI2000 System Design
• System Variables
• Parameters
• System parameters are those variables that do not change throughout a data file
• Event markers
• Event markers record events.
• Each module has access to these event markers.
• Signals
• System signals are functions of the user’s brain by the modules.
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Initial Implementations Of BCI2000
• Platform
• C++ as the programming language
• Microsoft Windows™ 2000/XP as the operating system
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Initial Implementations Of BCI2000
• Modules
• Source Module: Five source module implementations have been created to
date.
• Signal Processing Module:
• Extracts features from the digitized brain signals.
• The translation algorithm
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Initial Implementations Of BCI2000
• Modules
• User Application Module
Using sensorimotor rhythm control
P300-based spelling application
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Initial Implementations Of BCI2000
• Modules
• User Application Module
• Provides the investigator with a graphical interface
• Offline Analysis Tools
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Online Evaluation And Validation Of BCI2000
• Online Performance
SCP control of cursor movement
P300 control of a spelling program
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Discussion
• Benefits of BCI2000
• The primary benefit of BCI2000 to the investigator
• Benefits to the User
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CONCLUSION
• BCI2000 is a general-purpose research and development
platform
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Reference
1. G. E. Birch and S. G. Mason, “Brain-computer interface
research at the Neil Squire foundation,” IEEE Trans.
Rehab. Eng., vol. 8, pp. 193–195, June 2000.
2. T. Hinterberger, J. Kaiser, A. Kubler, N. Neumann, and
N. Birbaumer, “The thought translation device and its
applications to the completely paralyzed,” in Sci.
Interfaces, Tuebingen: Genista-Verlag, 2001.
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THANK YOU FOR YOUR
ATTENTION.