These face-reading glasses track physical and mental health

| by Danielle
David Vintiner

Surgeon Charles Nduka has developed sensor tech to track facial expressions and is currently using it with patients with Parkinson’s. His next target: depression

Charles Nduka is a plastic surgeon who mends the bodies of his patients with a scalpel and rebuilds their minds with a combination of face-reading technology and virtual reality.

Nduka’s interest in VR dates back more than two decades, to when he was a medical student. He is now co-founder and chief science officer of the Brighton-based startup Emteq, which makes wearable devices that read facial movements to give feedback on muscle activity. In the future, the same technology could be used to track the wearer’s emotions and even monitor their mental health.

In 2015 he set up Emteq with the data security entrepreneur and AI graduate Graeme Cox, funded by a £850,000 grant from the National Institute for Health Research and in collaboration with Phil Breedon, who leads the medical design research group at Nottingham Trent University.

Emteq has developed an insert for VR headsets that can track the wearer’s facial expressions and project them onto a VR avatar in real time. “People with facial paralysis can have limited awareness or control of abnormal facial movements,” explains Nduka. “Without proper feedback, their condition may worsen. By wearing expression-sensing glasses to provide real-time muscle feedback, patients can practise their exercises without having to stare at themselves in the mirror.”

The headset contains 10 electrodes that monitor the minute electrical changes that occur when muscles move in the face. From a flash of anger to a beaming smile, a telltale wave of electrical activity washes over the skin. This is detected using the sensors, and processed in the headset.

Nduka’s Parkinson’s project, which is funded by Innovate UK and run in collaboration with the German voice analytics startup audEERING, aims to give doctors a more nuanced, long-term view of the progression of the disease. The first part of the study involves 50 Parkinson’s patients and control group members wearing the glasses in laboratory conditions. A second study in 2019 will see 20 people wear the glasses at home.

Next Nduka wants to see if tracking facial expressions could also monitor emotion and help to produce a digital phenotype for mental health conditions. Prompted by a personal interest, after the suicide of his brother 18 years ago, he wants to develop phenotyping technology that could track a person’s mental health and flag up early warning signs before they reach a crisis. “We will be looking at depression next,” he says.

Other companies have already started work in this area. The psychiatrist and neuroscientist Tom Insel, co-founder of Mindstrong Health and a former director of the US National Institute of Mental Health, says that smartphones offer the opportunity to gather digital phenotypes as people go about their daily lives. Mindstrong Health is working with Takeda Pharmaceutical in Tokyo to develop digital biomarkers to track mental health conditions including schizophrenia and treatment-resistant depression.

Nduka hopes that digital phenotyping could one day bring a more preventive approach to mental health. If we ran transport like today’s mental health services, he says, “we would spend all our money on accident repair shops and recovery vehicles”.

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