Spatial contrast sensitivity functions (CSFs) depict the relationship between the
contrast threshold for detection and the spatial frequency of the grating. Similarly,
temporal CSFs show the change of the contrast threshold with the
flicker
frequency. The two types of CSFs are interacted each other. You can enter the spatial
frequency, temporal frequency, and mean luminance level of a grating
to estimate the corresponding
contrast threshold based on a chosen
data set. The estimated thresholds based on the model equation can differ from actual data.
The amount of deviation can be seen from the differences between the calculated thresholds (smooth curves) and the experimental data (circles) in the displayed figure.
You need to log in
to access the combined baseline data, where the model parameter values
are the means optimized over several published studies.
If you do not have a user name, please register here.
|