Language, Experience, and Development (LEAD) Lab

How we Take Pictures of the Brain

In the LEAD lab, we use several different methods to understand how your brain learns and grows. 

Functional Near-Infrared Spectroscopy (fNIRS)
fNIRS is a brain-imaging technique that lets us measure brain activity. It has several sensors called "optodes" that are arranged inside a stretchy cap, like a swim cap, that we place on your head. Some of the optodes shine small beams of light into your head, and then some of this light reflects back out to the other optodes. How much light is reflected tells us about the blood flow in your brain, which tells us how hard your brain is working!  fNIRS is safe, non-invasive, and very kid friendly -- it is small and quiet, and even lets you move around! 

pictures of children participating in fNIRS experiments


Functional Magnetic Resonance Imaging (fMRI)
fMRI is a brain-imaging technique that lets us measure both brain structure and function. MRI uses magnets to track blood flow in your brain, which tells us which parts of your brain you are using while you watch videos, listen to stories, and play games. The magnetic fields can also tell us about other properties of different brain tissues. Because we have to drown out the magnetic field of the earth, we need a REALLY BIG magnet -- this looks like a big tube that you lay down inside. We think it looks like a spaceship! fMRI is also very safe and non-invasive, and we do not use any contrasts or dyes. And when you're done, you will get a picture of your brain to take home!

Montage of photos showing a child doing a MRI scan