Carrasco, M. (1990). Visual space-time interactions: Effects of adapting
to spatial frequencies on temporal sensitivity. Perception & Psychophysics,
To study how adaptation to spatial frequency patterns affects temporal
sensitivity in vision, observers were selectively adapated for 4 min to
either a high- or low-spatial-frequency sinusoidal grating (12 and 2 cpd/respectively).
Their sensitivities to modulation of a blurred patch at high or low temporal
frequencies (12 Hz and 2 Hz, respectively) were measured , before and
after the adaptation period, by using the yes/no task of signal detection
theory. The data consistently indicated that spatial adaptation differentially
affected the observers' senstivites to temporal signals. Specifically,
when the observers were adapted to low spatial frequencies, their sensitivity
to low temporal frequencies was reduced; when they were adapted to high
spatial frequencies, their sensitivity to high temporal frequencies was
increased. These results have implications for the psychophysical measurements
of temporal and spatial sensitivity, as well as for the issue of the separability
of spatial and temporal properties of individual channels.