Estimating Response Time in Spatial Frequency Band Experiments involving Visual Perception http://dx.doi.org/10.11144/Javeriana.upsy16-1.erts


María del Prado Rivero Expósito
mrivero@psi.uned.es
|Universidad Nacional de Educación a Distancia



Enrique Vila Abad
evila@psi.uned.es
|Universidad Nacional de Educación a Distancia



Francisco Pablo Holgado Tello
pfholgado@psi.uned.es
|Universidad Nacional de Educación a Distancia



Javier Aparicio
mrivero@psi.uned.es
|Universidad Nacional de Educación a Distancia



Georgio de Marchis
mrivero@psi.uned.es
|Universidad Nacional de Educación a Distancia


Resumen

Abstract

The present study aimed to determine the optimum response time (RT) needed to identify images of everyday objects when filtered using different spatial frequency bands. Subjects were randomly presented with different images of familiar objects that were both serialized and progressive in their spatial frequencies. The time needed to recognize them was then measured. The results showed that the optimum RT for identifying an image filtered in different spatial frequency bands was approximately 2000 ms of exposure. Specifically, stimuli presented using spatial frequency bands with Gaussian filters of variance V26-V32, which were familiar and of medium size to the viewer, were recognized in a mean time of 2126 ms.