How do observers perceive the path of self-motion during rotation? Previous research suggests that extra-retinal information about eye movements is necessary at high rotation rates (2-5 degrees /s), but those experiments used sparse random-dot displays. With dense texture-mapped displays, we find the path can be perceived from retinal flow alone at high simulated rotation rates if (a) dense mot...

This paper describes the Parallaxis Score System, part of the authors ongoing research into to the development of technological tools that foster creative interactions between improvising musicians and predefined instructional texts. The Parallaxis platform places these texts within a networked, interactive environment with a generalised set of controls in order to explore and devise ontologies...

is termed the specific distance tendency (Gogel. 1969). Also. it has been found that an er of an object \rill result in an apparent movement of the object when the head is moved (H

The cosmological density of compact objects in the range 10 10 is currently uncertain. Potentially important components to the density of the universe include stars, MAssive Compact Halo Objects (MACHOs), and massive black holes. Here one hypothetical path to estimating the space density of these objects is proposed: the simultaneous measurement by separated observers of compact sources at cosm...