Inside the AI healthcare revolution: meeting the robots that can detect Alzheimer's and depression

This is the second in a three-part series reporting from Toronto's booming Artificial Intelligence sector where new technologies are being pioneered that will permanently change all of our lives Just 45 seconds in the company of scientist Frank Rudzicz and his machines is all it takes to determine whether or not you are suffering from Alzheimer's disease. In that time, the complex Artificial Intelligence (AI) algorithms that the 37-year-old and his team have developed are able to pick apart your voice and predict the severity of the disease to an accuracy of around 82 per cent (and rising). First, there is your actual use of language. Alzheimer's sufferers tend to leave longer pauses between words, prefer pronouns to nouns (for example, saying "she" rather than a person's name) and give more simplistic descriptions, such as a "car" rather than the model or make. Then there is what Rudzicz calls the "jittter and shimmer" of speech; variations in frequency and amplitude.