Anxiety affects the amplitudes of red and green colorelicited flash visual evoked potentials in humans

It has been reported that negative emotional changes and conditions affect the
visual faculties of humans at the neural level. On the other hand, the effects of emotion
on color perception in particular, which are based on evoked potentials, are unknown. In
the present study, we investigated whether different anxiety levels affect the color information processing for each of 3 wavelengths by using flash visual evoked potentials (FVEPs) and State-Trait Anxiety Inventory. In results, significant positive correlations were observed between FVEP amplitudes and state or trait anxiety scores in the long (sensed as red) and middle (sensed as green) wavelengths. On the other hand, short-wavelength-evoked FVEPs were not correlated with anxiety level. Our results suggest that negative emotional conditions may affect color sense processing in humans.