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Titolo:
Categorical and metric spatial processes distinguished by task demands andpractice
Autore:
Banich, MT; Federmeier, KD;
Indirizzi:
Univ Illinois, Beckman Inst 2161, Urbana, IL 61801 USA Univ Illinois Urbana IL USA 61801 Beckman Inst 2161, Urbana, IL 61801 USA Univ Calif San Diego, La Jolla, CA 92093 USA Univ Calif San Diego La Jolla CA USA 92093 Diego, La Jolla, CA 92093 USA
Titolo Testata:
JOURNAL OF COGNITIVE NEUROSCIENCE
fascicolo: 2, volume: 11, anno: 1999,
pagine: 153 - 166
SICI:
0898-929X(199903)11:2<153:CAMSPD>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
CEREBRAL HEMISPHERES; PERCEPTUAL ASYMMETRIES; INDIVIDUAL-DIFFERENCES; LATERAL ASYMMETRY; RIGHT-HANDERS; REPRESENTATIONS; CATEGORIZATION; SPECIALIZATION; INFORMATION; SIMULATIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Banich, MT Univ Illinois, Beckman Inst 2161, 405 N Mathews, Urbana, IL 61801 USA Univ Illinois 405 N Mathews Urbana IL USA 61801 a, IL 61801 USA
Citazione:
M.T. Banich e K.D. Federmeier, "Categorical and metric spatial processes distinguished by task demands andpractice", J COGN NEUR, 11(2), 1999, pp. 153-166

Abstract

In this study we examined Kosslyn's (1987) claim that the right hemisphereexhibits a relative superiority for processing metric spatial relations, whereas the left hemisphere exhibits a relative superiority for processing categorical spatial relations. In particular, we examined whether some failures to observe strong visual held (VF) advantages in previous studies mightbe due to practice effects that allowed individuals to process tasks in alternative manners (e.g., to process a metric task using a categorical strategy). We used two versions of a task previously employed by Hellige and Michimata (1989) in which individuals judge the metric (distance) or categorical (above/below) spatial relations between a bar and a dot. In one version,the position of the bar was held static. In another, the bar's position varied. This manipulation prevented participants from using the computer screen as a reference frame, forcing them to compute the spatial relationships on the basis of the relevant items only (i.e., the bar and the dot). In thelatter, but not the former version of the task we obtained evidence supporting Kosslyn's hypothesis, namely, a significant right visual held (RVF) advantage for categorical spatial processing and a trend toward a left visualfield (LVF) advantage for metric spatial processing. Furthermore, the pattern of results for trials on which information was presented centrally (CVFtrials) was similar to that observed on RVF trials, whereas the pattern for trials in which identical information was presented in each visual held (BVF trials) was similar to that observed on LVF trials. Such a pattern is consistent with Kosslyn's suggestion that categorical processing is better suited for cells with small receptive fields and metric processing for cellswith larger receptive fields.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 15:36:54