NIRSTORM: a Brainstorm plugin specialized in the analysis of fNIRS data

Author: Édouard Delaire, Lea Larreur, Dr. Zhengchen Cai, Dr. Christophe Grova

This tutorial aims to introduce NIRSTORM. NISTORM is a plug-in dedicated to the analysis of functional near-infrared spectroscopy (fNIRS) data inside Brainstorm.

This tutorial will cover three main aspects of NIRSTORM:

1. Data importation and preprocessing
2. Data analysis at the channel level
3. Data analysis on the cortical surface.

This tutorial assumes that you are already familiar with the Brainstorm environment. If you are not, we encourage you to follow the tutorial 1 to 23.

Introduction

Presentation of the experiment

The data presented in this tutorial correspond to a finger tapping task perform by one subject using their left, non-dominant hand. NIRS montage was done to target the subject right-motor cortex.

Data description:

• One subject, one run of 19 minutes acquired with a sampling rate of 10Hz on a CW fNIRS Brainsight device (Rogue-Research Inc., Montreal, Canada)

• Finger tapping task: 20 blocks of 10 seconds each, with a rest period of 30 to 60 seconds.

• 3 sources, 15 detectors, and 1 proximity detector.

• 2 wavelengths: 685nm and 830nm

• 3T MRI anatomy processed by FreeSurfer 5.3.0.

Download nirstorm_tutorial_2024.zip from https://osf.io/md54y/?view_only=0d8ad17d1e1449b5ad36864eeb3424ed

Setup

You can install NIRSTORM manually from Brainstorm directly. For that, go to Plug-ins > fNIRS > nirstorm.

Data Importation

Import the anatomy

Access the recording

Review of recording