Yodchanan Wongsawat, Ph.D. BCI Lab Director Department of Biomedical Engineering Faculty of Engineering, Mahidol University, THAILAND

Transcription

1 Yodchanan Wongsawat, Ph.D. BCI Lab Director Department of Biomedical Engineering Faculty of Engineering, Mahidol University, THAILAND 1

2 Idea Passion Royalty

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8 I fix Human

9 STROKE อ มพาต

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12 Over a billion people! ( 15% of the world s population) live with disability 190 million have severe disability Ref: WHO: World report on disability 2011 (

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16 Let s learn how to fix them

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25 Trends on BCI Medicine Robotics Preventive Tech. Treatment Signal Processing Rehabilitation & Assistive Tech. Brain Computer Interface (BCI)

26 BCI for Rehabilitation and Assistive Technology EEG-based Wheelchair Control Neuroprosthetic Communication Device (ithink2) BCI-based Robotic Arm BCI-based Rehabilitation Devices BCI for Treatment Neurofeedback Device for Attention Enhancement Peripheral Nerve Localization by Frequency-Based Electrical Stimulation BCI for Preventive Technology Real-time Sleep Analysis System BCI in Golf/Soccer Ongoing Project Highlight Projects

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28 Motion Visual Video

29 SSVEP-based BCI for Smart Home Using Brain Signal (EEG) to wirelessly control electrical devices by looking at the visual stimulation patterns Recent Status: International Patent Pending Supported by Recent Status: Clinical Trails with Spinal Cord Injury (SCI) Subject and Plan to Commercialize in Year 2012

30 Bangkok Post : 24 November 2010

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35 icreate 2012, 35

36 ERD/ERS Hybrid EOG-EEG

37 BCI-FES Electrode Placement Deltoid Biceps brachii Flexor digitorum Extensor digitorum

38 BCI-FES Average of Grabbing Force (8 subjects) Start Stimulation Force Sensor

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40 BCI for Rehabilitation and Assistive Technology EEG-based Wheelchair Control Neuroprosthetic Communication Device (ithink2) BCI-based Robotic Arm BCI-based Rehabilitation Devices BCI for Treatment Neurofeedback Device for Attention Enhancement Peripheral Nerve Localization by Frequency-Based Electrical Stimulation BCI for Preventive Technology Real-time Sleep Analysis System BCI in Golf

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42 19-channel EEG Analysis

43 Meditation Project Study the efficiency of current Buddhist meditation to the brain Invent the new binaural beat-based meditation for some specific purpose, e.g. reduce bruxism during sleep 43

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45 Some pictures during the experiment

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47 Active Play Project

48 Introduction Vestibular schwannoma / Acoustic neuroma / Cerebellopontine angle tumor It is very difficult to remove this tumor. 7 th and 8 th cranial nerves are risky damaged during tumors resection. 48

49 Introduction Conventional Nerve localization Surgical manipulation Nerve discharge during tumor resection Problems EMG Surgeon sometime miss to localize the nerve because nerve discharge could be induced even when surgical manipulator does not irritate to the nerve. 49

50 Materials and Methods Postoperative Nerve Function Assessment The Proposed method of nerve function estimation - Incision - manipulation Level 3 Level 3 Level 2 Level 2 Nerve model Level 1 Level 1 h θ (x) = θ 0 + θ 1 x = y θ = (X T X) -1 X T y Stimulus intensity (Input (x)) temg (output (y)) 50

51 Pain Controlled System 51

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56 Highlight Projects BCI for Rehabilitation and Assistive Technology EEG-based Wheelchair Control Neuroprosthetic Communication Device (ithink2) BCI-based Robotic Arm BCI-based Rehabilitation Devices BCI for Treatment Neurofeedback Device for Attention Enhancement Peripheral Nerve Localization by Frequency-Based Electrical Stimulation BCI for Preventive Technology Real-time Sleep Analysis System BCI in Golf

57 EEG-BASED BEHAVIORAL ENHANCEMENT SYSTEM Asst.Prof.Dr.Yodchanan Wongsawat Lect.Jetsada Arnin Brain-Computer Interface Laboratory (BCI LAB) Department of Biomedical Engineering Faculty of Engineering, Mahidol University

58 58 Logistic Markets ASEAN $4 billion Thailand $0.4 billion Indonesia $2.8 billion DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND

59 59 Accidents from Drowsiness Thailand: $700 million damage per year DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND

60 60 Drowsiness Facts 30% Drowsiness Accidents DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND

61 Millions 61 IEL: Cost of Accidents $4 $3 $3 $2 $2 $1 $1 $0 $2.2 DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND $2.4 $1.6 $1.7 $2.6 $1.9 $2.8 $2.0 $3.0 $ Cost from total accidents Cost from drowsiness accidents = drivers killed

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65 Experimental Design Waking up 3 minutes after stage 2 sleep 21 subjects (both male and female excluding 5 subjects from first experiment) 5 levels of questionnaire (level 1 = Sleepy, level 5 = Fresh) DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND 65

66 The Drowsiness

67 67 Product Trials DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND

68 DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND 68

69 69 System DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND

70 70 Alertz Specification 72 Hours Operating 7 Days data loggers EEG/EOG Signal Detector Bluetooth v4.0 LE Interface Water Proof IP65 Rechargeable Battery ROHS complaint Alarm with Vibration DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND

71 71 Alertz : Software Feature Display Reports Administrator Management (Permissions) Driver's Performance Limit User Accounting User/Product ID Management Database Management Easy to Installation and Upgrade Driver's Information log Connect to Product via Bluetooth 4.0 Operating System with Windows (64 bit only) DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND

72 72 Alertz : Software DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND

73 73 Alertz : Software DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND

74 74 Alertz : Software DEPARTMENT OF BIOMEDICAL ENGINEERING MAHIDOL UNIVERSITY, THAILAND

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77 77 Contribution & Conclusion Portable wireless brainwave monitoring system and innovative dry-electrode headband Automatically detect drowsiness in real time and alarm in case of drowsiness occurrence

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79 Sleep Lab System Main System Box Hub System Box Abdomen gauge Cannula Thorax gauge Sensor part SpO2 Thermistor Signal processing part

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83 Highlight Projects BCI for Rehabilitation and Assistive Technology EEG-based Wheelchair Control Neuroprosthetic Communication Device (ithink2) BCI-based Robotic Arm BCI-based Rehabilitation Devices BCI for Treatment Neurofeedback Device for Attention Enhancement Peripheral Nerve Localization by Frequency-Based Electrical Stimulation BCI for Preventive Technology Real-time Sleep Analysis System BCI in Golf/Soccer

84 Idea Passion Royalty