Behavioral and Brain Sciences

Short Communication

Planning differences for chromaticity- and luminance-defined stimuli: A possible problem for Glover's planning–control model

Charles E. Wright a1 and Charles Chubb a1
a1 Department of Cognitive Sciences, University of California, Irvine, Irvine, CA 92697-5100 .CFM?ID=2451


We report data from an experiment using stimuli designed to differ in their availability for processing by the dorsal visual pathway, but which were equivalent in tasks mediated by the ventral pathway. When movements are made to these stimuli as targets, there are clear effects early in the movement. These effects appear at odds with the planning–control model of Glover.