creators_name: Dépy, D
creators_name: Fagot, J
creators_name: Vauclair, J
type: journalp
datestamp: 2004-04-30
lastmod: 2011-03-11 08:55:32
metadata_visibility: show
title:  Comparative assessment of distance processing and hemispheric specialization in humans (Homo sapiens) and baboons (Papio papio)
ispublished: pub
subjects: comp-psy
full_text_status: public
keywords: coordinate representration, baboon, visual spatial processing, categorical judgement, hemispheric specialization, lateralization, human


abstract: This comparative study explored the ability to process distance and its lateralization in humans and baboons. Using a conditional matching-to-sample procedure in a divided-field format, subjects had to decide whether or not the distance between a line and a dot belonged to a short- or a long-distance category. Experiments 1, 2, and 4 demonstrated the ability of baboons to process and categorize distances. Moreover, humans showed better distance processing for right visual field/left hemisphere presentations than for left visual field/right hemisphere (LVF-RH) displays (Experiments 1–2). The same bias was found in baboons (Experiment 1), but in a weaker way. In Experiment 3, naive human individuals were tested and the difficulty of the discrimination was enhanced. There was a LVF-RH advantage which vanished with practice. Results are discussed by referring to theories (i.e., Kosslyn, 1987) of visuospatial processing for coordinate and categorical judgments.
date: 1998
date_type: published
publication:  Brain & Cognition
volume: 38
pagerange: 165-182
refereed: TRUE
citation:   Dépy, D and Fagot, J and Vauclair, J  (1998)  Comparative assessment of distance processing and hemispheric specialization in humans (Homo sapiens) and baboons (Papio papio).  [Journal (Paginated)]     
document_url: http://cogprints.org/3600/1/Depy_Brain_%26_Co__98_.pdf