Probe Design

One of the first steps in our fNIRS research is designing our probeset–deciding where sources and detectors should be placed on the head. Here are some of the methods we use to ensure that our probeset is suitable for the project:

The International 10-20 System

The International 10-20 System is useful for determining anchor points for your probe configuration. Positioning our probeset relative to anchor points will ensure that the probe is at the same anatomical location for each of our participants.

The International 10-10 System is a more complex alternative to the 10-20 system. Brain regions relative to the international 10:10 System: Koessler et al., 2009

Atlas Viewer GUI

Atlas Viewer GUI is also useful for placing probe configurations relative to the region of interest. This software is included in the developer version of HOMER2.

Cap Construction

Depending on the needs of the projects, our lab uses different types of caps, ranging from band rubber caps to full easy caps. And our lab have caps with different sizes. This ensures that we target the region of interest effectively and remove any noise such as hair and reduce discomfort for the participants.

• Cap Style Guide
• Cap Size Chart

Experimental Design

For most of our projects, we use the software E-Prime to develop and present our experimental paradigms. E-Prime has the capability to send triggers to the CW6 software, allowing us to mark when in our data certain things were presented by E-Prime. Click here if you want to learn how we do it.