From: Cross-orientation interactions in human vision
Journal of Vision. 2008;8(3):15. doi:10.1167/8.3.15
Figure Legend:
Cross-orientation interactions. Events leading to a key-press for a single subject and target orientation were analyzed in
terms of two orientations. θ 1 is the orientation preceding the key-press by the reaction time, and θ 2 is the orientation
immediately preceding (that is, 33 ms before) θ 1. These plots show joint probabilities of these two orientations, with θ 1
on the horizontal axis and θ 2 on the vertical. The top plot shows the observations. Probabilities were summed along
columns and rows to determine the marginal probability densities for θ 1, shown below the plot, and θ 2, at right,
respectively. The middle plot shows the joint probability density expected if θ 1 and θ 2 have independent effects in
producing
a key-press:
It is obtainedThe
by multiplying
marginal in
densities.
The
probability scale
at the©right
this
plotreserved.
Date
of download:
7/12/2017
Association the
for Research
Vision and
Ophthalmology
Copyright
2017.ofAll
rights
applies to both it and the top plot. The bottom plot gives the difference between the observations and the independence