Mr. Jun Watabe Profile

Jun Watabe

at Spectratech Inc

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 15 March 2023 Poster + Paper

Wearable fNIRS device of higher spatial resolution realized by triangular arrangement of dual-purpose optodes

Toru Yamada, Hiroshi Kawaguchi, Jun Watabe, Mitsuo Ohashi

Proceedings Volume 12365, 123650C (2023) https://doi.org/10.1117/12.2649791

KEYWORDS: Hemodynamics, Head, Spatial resolution, Signal detection, Cerebral cortex, Functional near infrared spectroscopy, Neuroimaging, Diffuse optical spectroscopy, Brain imaging

Read Abstract +

The human cerebral cortex is composed of gyri of approximately 10–15 mm in width that have independent functions. To explore their activities with functional near-infrared spectroscopy (fNIRS), hemodynamic responses at single gyri should be measured. Most fNIRS devices only offer a channel arrangement with a larger interval size than the gyrus width, which can cause false negative errors in detecting cortical activation localized within 10–15 mm, and this has been an obstacle using fNIRS to explore cortical activities. Previously, we demonstrated doubling of the channel density using a triangular arrangement of dual-purpose optodes with a minimum number of optodes that was almost equivalent to that used in conventional arrangements. To implement this method as a wearable device for human measurement, we developed a dual-purpose optode to function both as the source and detector with the base unit triangularly mounted by three optodes, and the connectors joining plural base units with three-way joints. Optodes in this triangular arrangement illuminated and detected in sequence between adjacent optodes and performed high-density 15-mm measurements in channel intervals. Measurements of 30 channels on an adult human successfully detected hemodynamic responses to unilateral finger movements at the motor-related cortical regions according to their functions.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years