ILAV   21219
INSTITUTO DE INVESTIGACION EN LUZ, AMBIENTE Y VISION
Unidad Ejecutora - UE
artículos
Título:
A simple visual task to asses ligthing flicker effect on visual perfomance
Autor/es:
JAEN MIRTA; COLOMBO, ELISA M; KIRSCHBAUM CARLOS K
Revista:
International Journal of Lighting Research and Technology
Editorial:
CIBSE
Referencias:
Lugar: London; Año: 2008
ISSN:
1365-7828
Resumen:
Temporal modulation of lighting still at frequencies higher than the critical fusion frequency can affect visual efficiency of sensitive individuals. A simple visual search task (that we developed in previous researches) and a conventional discrimination task were used to assess the effect and to compare results. We assessed visual performance of young individuals carrying out these visual tasks in laboratory conditions, using fluorescent lighting devices, which produced light with low (3%) and high (32%) temporal modulation. In the proposed visual search task, where errors were not allowed, only time was used to assess visual efficiency. In this case low modulation condition task-time resulted significantly lower than high modulation condition task-time (F(1,10)= 6.872 and p<0.02553). Largest relative differences between the two experimental conditions and better discrimination against subjects were obtained for the new test, suggesting that it could be useful to detect individual’s sensibility to temporal modulation of light.F(1,10)= 6.872 and p<0.02553). Largest relative differences between the two experimental conditions and better discrimination against subjects were obtained for the new test, suggesting that it could be useful to detect individual’s sensibility to temporal modulation of light.