The Legend of the Snail

Post date: Dec 05, 2014 9:7:49 AM

I have prepared an explanation for the notation used for the Snail showing the physiological data. This is a heart rate data from my already infamous failed driving test 18.11.2013.

A lot of stress between 10 and 12 - that is when I am failing :) Those snails are currently used to show the Biovotion VSM data.

This specific day actually brought me to the whole idea of the snail design - how you show the data of the combination of heart rate and steps counting / motion and how you will discriminate the Heart rate increase caused by the physical activity from the stress (mentally derived) heart rate increase. The solution was the multiparameter presentation - you use colour to represent the heart rate (response) and shape (length of the column) to represent physical activity (actuator). And then you allow the viewer to make the interpretation himself or herself by figuring out the response function. As soon as the pattern emerge viewer can see the abnormality, like this extended period of the high heart rate without physical activity.