A road side test for a tired brain? Not yet…

13 Jun A road side test for a tired brain? Not yet…

Measuring fatigue is an interesting topic, and an important one. With fatigue and drowsiness shown to reduce reflexes, our ability to concentrate and increases road accidents; it is no surprise that measuring this is of interest. This author recently wrote of a prototype road side fatigue test that involves a driving simulator and various sensors (measuring eye blinks, eye movements and ability to maintain concentration).

You can read that article here:


There are other methods currently being developed to assess sleepiness, and while not specifically for road side testing, perhaps this may one day be a possible application for these methods. Recently Jawinski et al. published a paper in the Journal of Sleep that looks to assess the relationship between VIGALL, a form of computerised brain wave (EEG) analysis and a common subjective sleepiness tool, the Epworth Sleepiness Scale (ESS). What they found was that the VIGALL-ESS association approximates the ESS-MSLT results. The MSLT is an objective sleep study that measures the ability of a person to fall asleep throughout the day and is the gold standard assessment of sleepiness. The authors suggest VIGALL could be used to assess the daytime sleepiness of large populations but are not yet confident VIGALL can identify actual disorders of excessive sleepiness.

While we are a long way from road side brain activity testing, VIGALL is an interesting if not yet well proven system for objectively assessing sleepiness.

Original article can be found here: