Locked-In ALS Patients Answer Yes or No Questions with Wearable fNIRS Device

Locked-In ALS Patients Answer Yes or No Questions with Wearable fNIRS Device

Posted on: March 20th, 2017 by Neurohealth Associates

Functional near infrared spectroscopic (fNIRS) imaging (pronounced f-nears) has led to a breakthrough in communication with ALS patients who are “Locked-In,” meaning they are in advanced stages of the disease where the brain is conscious and functioning, but they are unable to move any muscles, including the eyes.

Using a wearable system developed by SUNY Downstate Medical Center researcher Dr. Randall Barbour, a team of investigators led by Professor Niels Birbaumer at the Wyss Center for Bio and Neuroengineering in Switzerland and University of Tübingen in Germany were able to measure the brain’s hemodynamic response to a series of ‘yes’ or ‘no’ questions, thus allowing these patients to communicate.

The results of the trial were published recently in PLOS Biology.

“For many years, the scientific community has attempted communication with these subjects using different neurosensing technologies,” says Dr. Barbour. “Previous efforts using fMRI and EEG had their limitations, so we built our device to detect changes using near infrared spectroscopy.”

Non-invasive and wearable, the fNIRS system may eventually be incorporated into a home environment, allowing family, friends, and caregivers to communicate with the patient for the first time since the onset of this severe stage ALS.

Photo and Video Credit: Wyss Center

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Neuro Fact

Delta waves are the slowest brain wave frequency at 4Hz and lower, and play a key role in restorative/deep sleep

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