Transparency and imagining seeing

Seeing depth coherence and transparency.

Gratings with different disparities are sometimes seen as transparent surfaces, each with a distinct depth, when they are superimposed, and sometimes they are seen as a coherent plaid confined to a single depth plane--stereo analogs of transparent and coherent motion. Briefly presented sinusoidal gratings of similar spatial frequencies are seen to cohere in depth. The resulting plaid generally ...

Seeing and imagining the "same" objects in unilateral neglect.

Dissociations between perceptual and imaginal neglect are typically investigated by using very different tasks (e.g. visual target cancellation vs. place descriptions). Here we report patients' performance on imaginal and perceptual tasks which shared identical stimuli and procedure, except for the modality of stimulus presentation. In different tasks, participants either saw towns/regions on a...

Network Transparency: Seeing the Neutral Network

Mechanisms for seeing transparency-from-motion and orientation-from-motion.

Structure-from-motion (SFM) perception is hypothesised to be mediated by units that sense the near-far relationships in transparency-from-motion (TFM) and orientation-from-motion (OFM). The frequency of subjective reversals during observation of ambiguous SFM displays is considerably decreased when either the direction of rotation or the surface orientation is oscillated during the inspection. ...

Imagining Clp(, ) Imagining Clp(, )

We study under which conditions the domain of-terms (() and the equality theory of the-calculus () form the basis of a usable constraint logic programming language (CLP). The conditions are that the equality theory must contain axiom , and the formula language must depart from Horn clauses and accept universal quantiications and implications in goals. In short, CLP((,) must be close to Prolog. ...