Knowing the position of the light
source is essential to understand a three-dimensional scene but this
knowledge is very difficult to extract from an image. Human observers
assume by default that light comes from above their head, and also
slightly from the left. We have been interested in the consequences of
the use of such a prior knowledge and looked for the neural correlates
of this assumption.
Collaborators:
Further
references:
Mamassian,
P.
(2004). Impossible shadows and the shadow correspondence problem.
Perception,
33, 1279-1290.
Mamassian, P. & Goutcher, R.
(2001). Prior
knowledge on the illumination position. Cognition,
81, B1-B9.
Mamassian, P.,
Jentzsch, I., Bacon, B. A. & Schweinberger, S. (2003). Neural
correlates of shape from
shading. NeuroReport, 14, 971-975.