Adelson's group has devised a new set of visual illusions
that serve as tools for exploring the operations of lightness
perception. These experiments have exposed a set of mid-level
mechanisms operating with "mid-level" representations,
sensitive to statistical and configural aspects of an image. Dr.
David Somers used fMRI to show that visual attention can
modulate brain activity even in the first stages of visual
processing in area VI. Previously it had been thought that
attentionís effects would only be observed at higher levels of
Rosenholtz is starting up her lab. Interested in visual
search? Texture perception? Check out her work from when
she was at PARC research labs.