title: Spatial coding in two dimensions.
abstract: There has been growing interest in exploring human performance for situations in which stimuli and/or responses vary along both horizontal and vertical dimensions. Earlier studies indicated that there is a prevalence of the horizontal dimension over the vertical dimension in the spatial codes that are used for response selection. We review evidence about spatial coding for 2-D stimulus-response sets and accounts that have been proposed for explaining how it takes place. Particular attention is devoted to the relative salience account, which provides the most comprehensive explanation of 2-D spatial coding. We also evaluate the influence of speed of spatial code formation, number of reference frames, and learning on subjects' performance in 2-D tasks.
authors.affiliation: Università di Modena e Reggio Emilia, Reggio Emilia, Italy. rubichi@unimore.it
authors.forename: Sandro
authors.initials: S
authors.lastname: Rubichi
authors.forename: Kim-Phuong L
authors.initials: KP
authors.lastname: Vu
authors.forename: Roberto
authors.initials: R
authors.lastname: Nicoletti
authors.forename: Robert W
authors.initials: RW
authors.lastname: Proctor
mesh_terms: D003214:Conditioning, Classical; D006801:Humans; D013028:Space Perception; D014796:Visual Perception