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Titolo:
Consistent mapping of orientation preference across irregular functional domains in ferret visual cortex
Autore:
White, LE; Bosking, WH; Fitzpatrick, D;
Indirizzi:
Duke Univ, Med Ctr, Dept Community & Family Med, Div Phys Therapy, Durham,NC 27710 USA Duke Univ Durham NC USA 27710 Med, Div Phys Therapy, Durham,NC 27710 USA Duke Univ, Med Ctr, Dept Neurobiol, Durham, NC 27710 USA Duke Univ DurhamNC USA 27710 d Ctr, Dept Neurobiol, Durham, NC 27710 USA
Titolo Testata:
VISUAL NEUROSCIENCE
fascicolo: 1, volume: 18, anno: 2001,
pagine: 65 - 76
SICI:
0952-5238(200101/02)18:1<65:CMOOPA>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
OCULAR-DOMINANCE COLUMNS; CAT STRIATE CORTEX; HORIZONTAL CONNECTIONS; CORTICAL MAPS; CROSS-CORRELATION; PINWHEEL CENTERS; 2 EYES; SELECTIVITY; AREA-17; ORGANIZATION;
Keywords:
functional maps; orientation preference; ocular dominance; visuotopy; optical imaging;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
50
Recensione:
Indirizzi per estratti:
Indirizzo: White, LE Duke Univ, Med Ctr, Dept Community & Family Med, Div Phys Therapy, Box 3965, Durham, NC 27710 USA Duke Univ Box 3965 Durham NC USA 27710 965, Durham, NC 27710 USA
Citazione:
L.E. White et al., "Consistent mapping of orientation preference across irregular functional domains in ferret visual cortex", VIS NEUROSC, 18(1), 2001, pp. 65-76

Abstract

The mammalian visual cortex harbors a number of functional maps that represent distinct attributes of stimuli in the visual environment. Wow different functional maps are accommodated within the same cortical space, especially in species that show marked irregularities in one or more functional maps, remains poorly understood. We used optical imaging of intrinsic signals and electrophysiological techniques to investigate the organization of the maps of orientation preference, ocular dominance, and visual space in ferret. This species shows striking nonuniformity in the arrangement of ocular dominance domains and disruption of the mapping of visual space along the V1/V2 border. We asked whether these irregularities would be reflected in theorganization of the map of orientation preference. The results show that orientation preference is mapped consistently within both V1 and V2, and across the interareal boundary, with no reflection of the irregularities in the other maps. These observations demonstrate the accommodation of multiple functional maps within the same cortical space without systematic geometrical relationships that necessarily constrain the organization of each representation. Furthermore, they imply that the structure of the map of orientation preference reflects the architecture and activity patterns of cortical circuits that are independent of other columnar systems established in layer 4.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/01/20 alle ore 19:16:20