Brain Activity Monitor (Hb134)


The Wearable Brain NIRS is a sensor that non-invasively measures blood volume changes in the frontal lobe.

Although many researchers have focused on the frontal lobe because of the mental component of blood volume changes, the conventional brain NIRS has not been sufficiently suitable for long-term and stress-free measurement of the mental component due to the pressure on the head of the examinee.

In order to reduce the burden on the subject, the Hb134 and Hb133 have a newly developed ultra-thin NIRS plate attached to the inside of the bandana. This is a revolutionary device that enables measurement of blood volume changes in the frontal lobe by wearing a sun visor.

Elderly people with dementia and children with developmental disabilities, who had previously been reluctant to wear NIRS sensors, can now wear them without any resistance and easily take measurements.

Hb134 is designed to store data in the device.

The measurement algorithm developed by Shizuoka University has been put to practical use by our company, and the quantitative change has been confirmed by simultaneous measurement with PET using oxygen isotopes by the Department of Nuclear Medicine at Sogo University.

Real-time measurement and data storage type measurement. The latest Hb134 in the series have the storage mode measurement.
Sensor: 2 channels

Weight: 100 g (Ultra-light weight)

Bandana: stretchy fabric, our original (made in Japan)

Measurement item: Regional Saturation of Oxygen (rSO2: %), Oxygenated Hemoglobin, Deoxygenated Hemoglobin [unit: mM] for each channel

Acceleration (X, Y, Z) Max=2G

Bluetooth-LE (MBN52832)

Sampling rate: Max 10 Hz (0.1sec)

Measurement display program: Windows

This device cannot be used for medical treatment.
If you wish to use it, please obtain approval from the Ethics Committee of the university or hospital.


Measurement methodNIRS (Near-infrared Spectroscopy) SRS
Light source
2 colors of LEDs
Optical average power 1 mW or less, peak wavelength 770±10nm, 830±10nm
SensorFPC (Flexible printed circuits)
Excessive and repeated bending may cause breakage.
Measurement channel2 channels (fixed
Data file formatIn CSV format and storage mode, measurement data will be saved in the flash memory of the instrument.
Sampling rate0.1, 0.2, 0.5, 1.0 (sec)
Measurement itemRegional Oxygen Saturation (rSO2: %)
Oxyhemoglobin (Oxy-Hb: mM)
Deoxyhemoglobin (Deoxy-Hb: mM) Oxy、Deoxy-Hb:mM)
Triaxial acceleration (X, Y, Z Max.:2G)
Battery2 AAA batteries 3 V
Battery life: slower sampling rate increases battery life and faster sampling rate decreases battery life.
WirelessBluetooth-LE (MBN52832)
Within 5m in a straight line distance
Overseas certification (CE: Europe, FCC: North America, IC: Canada)
Flash memory capacity128KB (Data Storage in Storage Mode)
Measurement programWindows: Hb134.exe
Event fileDepends on the host machine's calendar.
Can be stored for 6 months as capacity.
OS​Windows: Windows 8.1, Windows 10
NIRS plate holderBandanas (L/M, M/S) in two sizes
WeightApprox. 100 g (batteries included)
EventSynchronization of event data with post-measurement data