Abstract
The luminance threshold for horizontal contours which move upward is raised by prior exposure of any of wide range of different directions of movement. The threshold for a stationary grating of horizontal bars is raised only by prior exposure of similarly oriented bars. It is also found that sensitivity to changes in orientation of a stationary grating is greater than sensitivity to changes in the direction in which a grating moves. It is proposed that the interactions between pre-exposed adapting stimuli and the stimuli for which thresholds are determined reflect the orientation and direction selectivities of the underlying mechanisms.
© 1968 Optical Society of America
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Alberta S. Gilinsky
J. Opt. Soc. Am. 58(1) 13-18 (1968)
Allan Pantle
J. Opt. Soc. Am. 60(8) 1120-1124 (1970)
Jacob Nachmias
J. Opt. Soc. Am. 58(1) 9-13 (1968)