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Brain Computer Interface: 

Brain Computer Interface 指導老師:李柏磊 副教授 報告者:電機三 B 葉姿妤 電機二 A 蕭有容 電機二 B 陳迺惠

Outlines: 

Outlines What is BCI? How does it work? Brain Wave Control Simple introduction of the brain Data Acquisition Apps Drawbacks & Future Q&A

PowerPoint Presentation: 

You can make it with BCI !

PowerPoint Presentation: 

What is BCI?

PowerPoint Presentation: 

Brain -Computer Interface - Direct Neural Interface or Brain-Machine Interface Direct communication pathway between a brain and an external device. Research on BCIs began in the 1970s at the University of California Los Angeles

How does it work?: 

How does it work? Signal Acquisition Signal Processing Devices

Brain Wave Control: 

Brain Wave Control

Brain Wave Control: 

Brain Wave Control Active α (8 – 12 Hz): relaxed/reflecting β (12 – 30 Hz): alert/working - Training - Misjudgment

Brain Wave Control: 

Brain Wave Control Passive Evoked potentials

Brain Wave Control: 

Brain Wave Control Passive Evoked potentials

Brain Wave Control: 

Brain Wave Control Passive Evoked potentials

Simple introduction of the brain: 

Simple introduction of the brain Focus on cortex

PowerPoint Presentation: 

Cerebral cortex 大腦皮質 Cerebellum 小腦 Midbrain 中腦

Structure of the cortex: 

Structure of the cortex

Cortex(皮質): 

Cortex( 皮質 )

PowerPoint Presentation: 

Primary Somatosensory Cortex 主要身體感覺區 Primary Motor Cortex 主要運動區 Motor Association Cortex 運動聯合區

PowerPoint Presentation: 

Sensory Association Area 感覺聯合區 Visual Association Area 視覺聯合區 Visual Cortex 視覺皮質區 Wernicke's Area 威氏區

PowerPoint Presentation: 

Prefrontal Cortex 前額葉皮質區 Speech Center (Broca‘s Area) 布洛卡氏區 Auditory Cortex 聽覺皮質區 Auditory Association Area 聽覺聯合區

Data Acquisition: 

Data Acquisition

Data Acquisition: 

Data Acquisition Invasive BCIs Non-Invasive BCIs Partially-Invasive BCIs Wireless BCIs

Invasive BCIs: 

Invasive BCIs Implanted: grey matter Signals: highest quality Scar-tissue build-up Target: repairing damaged sight providing new functionality to persons with paralysis Artificial Vision System

Electrode Arrays: 

Electrode Arrays

App.- Artificial Vision: 

App.- Artificial Vision 4X4 16 pixels 8X8 64 pixels 12X12 144 pixels 16X16 256 pixels 32X32 1024 pixels 128X128 16384 pixels

Non-Invasive BCIs: 

Non-Invasive BCIs poor signal resolution power muscle implants and restore partial movement Interfaces EEG MEG MRI

MEG: 

MEG Magnetoencephalography Magnetic Field: 10 -15 T ~10 -13 T (Weak!!) S.Q.U.I.D. Sensors Shielded Room

Magnetic Field: 

Magnetic Field

Partially-Invasive BCIs: 

Partially-Invasive BCIs Implanted: skull lower risk of forming scar-tissue in the brain Signal quality between invasive BCIs & non-invasive BCIs

Wireless BCIs: 

Wireless BCIs More practical Embedding multiple chips More complicated thoughts Transmission with RF key requirement: keep the heat down

Wireless BCIs: 

Wireless BCIs Size: 2cm in diameter 、 8cm thick Low cost Receive Distance: 10m ~ 50m

Examples of BCI: 

Examples of BCI

Rats implanted with BCIs in Theodore Berger’s experiments: 

Rats implanted with BCIs in Theodore Berger ’ s experiments

Monkey operating a robotic arm with BCIs: 

Monkey operating a robotic arm with BCIs

Controlling a robotic dog with BCI: 

Controlling a robotic dog with BCI

A man operates the computer with his EEG: 

A man operates the computer with his EEG

A man operates the computer with his EEG: 

A man operates the computer with his EEG

PowerPoint Presentation: 

P300->300ms 頂葉

Disadvantages: 

Disadvantages Headache Exhausting Laziness Degenerate

Future: 

Future Integrate with different territory From lab to factory Nursing and medical treatment

References: 

References http://spectrum.ieee.org/biomedical/devices/the-brainmachine-interface-unplugged/0 http://www.seeingwithsound.com/etumble.htm http://www.yct.com.tw/life/98drum/98drum17.pdf http://www.libertytimes.com.tw/2007/new/may/24/today-life3.htm http://hi.ctust.edu.tw/mediawiki/index.php/%E8%85%A6%E6%A9%9F%E4%BB%8B%E9%9D%A2%28BCI%29

Q&A: 

Q&A ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?