|Modulation frequency||120 Hz|
|Modulation depth||100 %|
The behavior of the animals on the observing-response task was disrupted during 30- or 60-minute exposures but only at power densities that were 50 mW/cm² or higher. This disruption was increasingly evident as power density increased. Under both durations of irradiation (30 and 60 minutes), behavior was not consistently perturbed until rectal temperatures increased more than 1°C. Rectal temperature was slightly increased at 10 mW/cm², was a monotonic function of the power density, and was markedly elevated at power densities between 40 an 50 mW/cm².