By CBC Radio

The are lots of examples of how various wearables can track and monitor your activity and physical health, all of which provide tangible clues that can be measured.

But what about mental health? The physical manifestations of depression often are a lot more subtle than, say,  an elevated heart rate.

That's where Rosalind Picard comes in. She is the founder and director of the Affective Computing research group at the MIT Media Lab, and she explores how technology might be able to monitor and reveal clues about our mental wellbeing.

She spoke to Spark host Nora Young as part of the health technology special.