Study tests potential telemedicine approach
A specially designed computer program can help diagnose post-traumatic stress disorder (PTSD) in veterans by analyzing their voices, a new study finds.
Published online April 22 in the journal Depression and Anxiety, the study found that an artificial intelligence tool can distinguish – with 89 percent accuracy – between the voices of those with or without PTSD.
“Our findings suggest that speech-based characteristics can be used to diagnose this disease, and with further refinement and validation, may be employed in the clinic in the near future,” says senior study author Charles R. Marmar, MD, the Lucius N. Littauer Professor and chair of the Department of Psychiatry at NYU School of Medicine.
More than 70 percent of adults worldwide experience a traumatic event at some point in their lives, with up to 12 percent of people in some struggling countries suffering from PTSD. Those with the condition experience strong, persistent distress when reminded of a triggering event.
The study authors say that a PTSD diagnosis is most often determined by clinical interview or a self-report assessment, both inherently prone to biases. This has led to efforts to develop objective, measurable, physical markers of PTSD progression, much like laboratory values for medical conditions, but progress has been slow.
Learning How to Learn
In the current study, the research team used a statistical/machine learning technique, called random forests, that has the ability to “learn” how to classify individuals based on examples. Such AI programs build “decision” rules and mathematical models that enable decision-making with increasing accuracy as the amount of training data grows.
The researchers first recorded standard, hours-long diagnostic interviews, called Clinician-Administered PTSD Scale, or CAPS, of 53 Iraq and Afghanistan veterans with military-service-related PTSD, as well as those of 78 veterans without the disease. The recordings were then fed into voice software from SRI International – the institute that also invented Siri – to yield a total of 40,526 speech-based features captured in short spurts of talk, which the team’s AI program sifted through for patterns.
The random forest program linked patterns of specific voice features with PTSD, including less clear speech and a lifeless, metallic tone, both of which had long been reported anecdotally as helpful in diagnosis. While the current study did not explore the disease mechanisms behind PTSD, the theory is that traumatic events change brain circuits that process emotion and muscle tone, which affects a person’s voice.
Moving forward, the research team plans to train the AI voice tool with more data, further validate it on an independent sample, and apply for government approval to use the tool clinically.
“Speech is an attractive candidate for use in an automated diagnostic system, perhaps as part of a future PTSD smartphone app, because it can be measured cheaply, remotely, and non-intrusively,” says lead author Adam Brown, PhD, adjunct assistant professor in the Department of Psychiatry at NYU School of Medicine.
“The speech analysis technology used in the current study on PTSD detection falls into the range of capabilities included in our speech analytics platform called SenSay Analytics™,” says Dimitra Vergyri, director of SRI International’s Speech Technology and Research (STAR) Laboratory. “The software analyzes words – in combination with frequency, rhythm, tone, and articulatory characteristics of speech – to infer the state of the speaker, including emotion, sentiment, cognition, health, mental health and communication quality. The technology has been involved in a series of industry applications visible in startups like Oto, Ambit and Decoded Health.”
The Latest on: PTSD
via Google News
The Latest on: PTSD
- High-profile B.C. Mountie with PTSD says support system is 'broken' and 'in crisis'on October 17, 2019 at 4:00 pm
She says firsthand experience has shown her the support system for Mounties with PTSD is "broken" and has to be rebuilt from the ground up. "I can absolutely say that we are in crisis, and it's only ...
- PTSD behind Regina police officer's impaired drivingon October 17, 2019 at 3:53 pm
A Regina city police officer was using alcohol to medicate PTSD when, on the night of Aug. 21, he was involved in a collision with another vehicle. A vigilant member of the public led police to the ...
- Army veteran walks across country, through Tri-State, to spread awareness of PTSDon October 17, 2019 at 3:47 pm
Army veteran walks across country, through Tri-State, to spread awareness of PTSD A retired Army staff sergeant walking across America on a journey of healing for himself and other veterans with PTSD ...
- I Have Medical PTSD — but It Took a Long Time to Accept Thaton October 17, 2019 at 12:02 pm
Sometimes I threw up, sometimes I felt angry and scared and claustrophobic. But I never reacted the way the people around me were. That repeated experience led me to read about PTSD (one very helpful ...
- A new study suggests PTSD may contribute to the rise in strokes in younger adultson October 17, 2019 at 11:50 am
The incidence of stroke, a major cause of disability and death, is on the rise in young and middle-aged adults. A new study suggests that PTSD may be a contributing factor. "There is now a large ...
- Young adults with PTSD at elevated risk for stroke by middle ageon October 17, 2019 at 8:27 am
Young adults who develop PTSD have a greater risk for transient ischemic attack and ischemic stroke, independent of established risk factors, coexisting psychiatric disorders and health care ...
- Stroke risk higher for younger adults with PTSDon October 17, 2019 at 7:02 am
They ranged in age from 18 to 60 years and two-thirds were white. Of those, 29 percent had been diagnosed with PTSD. None had previously suffered a stroke or mini-stroke -- also known as a transient ...
- The Relationship Between Addiction and PTSD in Combat Veteranson October 17, 2019 at 6:02 am
One reason for this is PTSD, also called “battle fatigue” or “shell shock,” since it is caused by extreme stress after witnessing tragic or startling events on the battlefield. Veterans may also ...
- Young adults with PTSD may have a higher risk of stroke in middle ageon October 17, 2019 at 2:01 am
Young adults who suffer from posttraumatic stress disorder (PTSD) may be more likely to experience a transient ischemic attack (TIA) or major stroke event by middle age, raising the risk as much as ...
- High-profile B.C. Mountie hit with PTSD says support system is 'broken' and 'in crisis'on October 17, 2019 at 1:00 am
She says first-hand experience has shown her the support system for Mounties with PTSD is "broken" and has to be rebuilt from the ground up. "I can absolutely say that we are in crisis and it's only ...
via Bing News