2007, Piran, Slovenia

Working environment
It is interesting to note that the P300 latency in the red-light condition was found to be
significantly shorter than that in the blue-light condition. In general, it is recognized that the
P300 latency depends on the activity level of the cortex. We didn’t measure P300 in the
experiment on color temperature and illuminance. However, the higher feeling of sleepiness
might suggest the lower level of the cortex activity.
We suggest that the higher activity in the central nervous system is related to the acceleration
of the time sense.
DISCUSSION
It can be assumed that the higher level of brain activity in the red-light condition, or the
higher color temperature condition might accelerate the endogenous interval timing clock. It
is assumed that the visual pathway (retina - lateral geniculate body - primary visual cortex)
might be involved in this effect.
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