CONTENTS
10.1 Introduction ................................................................................................ 190
10.2 Methods to Measure Brain Activities ..................................................... 191
10.2.1 Brain Wave Bioelectric Signal Measurement ............................. 191
10.2.2 Measurement of Blood Information of the Brain ...................... 192
10.3 Device Development ................................................................................. 194
10.3.1 Hybrid Sensor Probe ..................................................................... 194
10.3.2 Signal Processing and Control Board ......................................... 195
10.4 Experiment.................................................................................................. 196
10.4.1 Operation Verification of the Hybrid Sensor Probe .................. 196
10.4.2 Optical Data Collection Experiment ........................................... 197
10.4.3 Assistive Device Control Experiment......................................... 198
10.5 Result ........................................................................................................... 199
10.5.1 Verification of Operation of the Hybrid Sensor Probe ............. 199
10.5.2 Optical Data Collection Experiment ........................................... 199
10.5.3 Assistive Device Control Experiment......................................... 200
10.6 Discussion ................................................................................................... 201
10.7 Conclusion .................................................................................................. 203
References ............................................................................................................. 203
10
Measurement of Brain Activity Using
Optical and Electrical Methods
Atsushi Saito, Alexsandr Ianov, and Yoshiyuki Sankai
University of Tsukuba
Tsukuba, Japan
Abstract
There are patients who cannot produce bioelectric signals such as
patients with advanced stages of amyotrophic lateral sclerosis or those
who have suffered severe spinal cord injury. These patients are unable
to use bioelectrical signal-based assistive devices such as the robot suit
HAL. This chapter proposes a noninvasive brain activity scanning
method for collecting the patient’s movement intentions by developing
189
10.1 Introduction ................................................................................................ 190
10.2 Methods to Measure Brain Activities ..................................................... 191
10.2.1 Brain Wave Bioelectric Signal Measurement ............................. 191
10.2.2 Measurement of Blood Information of the Brain ...................... 192
10.3 Device Development ................................................................................. 194
10.3.1 Hybrid Sensor Probe ..................................................................... 194
10.3.2 Signal Processing and Control Board ......................................... 195
10.4 Experiment.................................................................................................. 196
10.4.1 Operation Verification of the Hybrid Sensor Probe .................. 196
10.4.2 Optical Data Collection Experiment ........................................... 197
10.4.3 Assistive Device Control Experiment......................................... 198
10.5 Result ........................................................................................................... 199
10.5.1 Verification of Operation of the Hybrid Sensor Probe ............. 199
10.5.2 Optical Data Collection Experiment ........................................... 199
10.5.3 Assistive Device Control Experiment......................................... 200
10.6 Discussion ................................................................................................... 201
10.7 Conclusion .................................................................................................. 203
References ............................................................................................................. 203
10
Measurement of Brain Activity Using
Optical and Electrical Methods
Atsushi Saito, Alexsandr Ianov, and Yoshiyuki Sankai
University of Tsukuba
Tsukuba, Japan
Abstract
There are patients who cannot produce bioelectric signals such as
patients with advanced stages of amyotrophic lateral sclerosis or those
who have suffered severe spinal cord injury. These patients are unable
to use bioelectrical signal-based assistive devices such as the robot suit
HAL. This chapter proposes a noninvasive brain activity scanning
method for collecting the patient’s movement intentions by developing
189