There are smartphone apps for monitoring your diet, your drugs, even your heart. And now a Michigan psychiatrist, Melvin McInnis, is developing an app he hopes doctors will someday use to predict when a manic episode is imminent in patients with bipolar disorder.
Manic episodes can come with a dangerous mix of increased energy and impaired judgment.
“We want to be able to detect that well in advance,” McInnis says. “The importance of detecting that well in advance is that they reach a point where their insight is compromised, so they don’t feel themselves that anything is wrong.”
Early detection would give doctors a chance to adjust a patient’s medications and stave off full-blown manic episodes.
McInnis says researchers have known for some time that when people are experiencing a manic or depressive episode, their speech patterns change. Depressed patients tend to speak slowly, with long pauses, whereas people with a full-blown manic attack tend to speak extremely rapidly, jumping from topic to topic.
“It occurred to me a number of years ago that monitoring speech patterns would be a really powerful way to devise some kind of an approach to have the ability to predict when an episode is imminent,” says McInnis.
So he and some computer science colleagues invented a smartphone app. The idea is that doctors would give patients the app. The app would record whenever they spoke on the phone. Once a day, the phone would send the recorded speech to a computer in the doctor’s office that would analyze it for such qualities as speed, energy and inflection.
Right now the app is being tested with 12 or 15 volunteers who are participating in a longitudinal study of bipolar disorder.
McInnis and his colleagues presented preliminary results at this year’s International Conference on Acoustics, Speech and Signal Processing, and so far, things are looking encouraging. McInnis says the software is reasonably good at detecting signs of an impending manic attack. It’s not quite as good catching an oncoming depression.
For information about other groups working on the same issue you can see our post on bipolar apps.