By Stephen H. Fairclough, Kiel Gilleade
This edited assortment will supply an outline of the sphere of physiological computing, i.e. using physiological indications as enter for laptop regulate. it's going to hide a breadth of present study, from brain-computer interfaces to telemedicine.
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They were able to classify the eight emotions with an accuracy of 81 %. They then attempted to classify the measured emotions according to the day they were evoked and were able to classify the day with an accuracy of 83 %. It is therefore easier to determine the day on which an emotion was expressed than the type of emotion from physiology! This is even more startling since there were 8 possible emotions and 20 possible days, making day classification much more challenging in principle. Picard et al.
G. Brunner et al. 2011). Some sensors can be made contactless: for instance, temperature could be measured using infrared cameras. Others can be built into the user interface or the surrounding environment. Lin (2011), for example, built their sensors into the steering wheel of a car while Wilhelm et al. (2006) built them into clothing. These sensors have great potential, but need to be validated to ensure that factors such as intermittent contact with the skin do not invalidate the measurements.
This is often true in laboratory studies, but not in the real world. When trying to detect stress and fatigue during driving, for instance, the vast majority of the measured psychological states would involve normal driving, and a small number of brief high-stress or high-fatigue periods would need to be detected. This challenge was mentioned as early as Picard et al. (2001). The same problem is well-known in gesture and speech recognition, where the majority of recordings consist of ‘garbage’ and actual events occur only briefly.
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