Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2021 Jan 15;14:598502. doi: 10.3389/fnhum.2020.598502

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2021 Wanniarachchi, Lang, Wang, Pruitt, Nerur, Chen and Liu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Experimental protocol and setup. (A) The NP experimental protocol consists of a 30-s initial baseline and 40 trials. Each trial has four phases: up to 20-s NP decision task (D_i ), 5-s rest (R_2i−1), 10-s feedback (F_i ), and 5-s rest (R_2i ) again before starting another block/trial for D_i+1 trial. (where i = 1, 2, 3, …, 40) Each block lasts about 30–40 s. (B) A demonstration of the fNIRS optode-setting helmet on a dummy head, holding 25 pairs of light sources (red dots) and 23 detectors (blue dots) with channel numbers marked covering the pre-frontal and frontal regions. (C) The entire optode layout for the whole-head helmet; the holes within the dashed frames were not used to hold any optode in this study while the other holes are color-matched to those shown in (B) on the forehead.