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Author Gattass, Ricardo ♦ Galkin, Thelma W. ♦ Desimone, Robert ♦ Ungerleider, Leslie G.
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher Wiley
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Philosophy & psychology ♦ Psychology ♦ Natural sciences & mathematics ♦ Life sciences; biology ♦ Natural history of organisms ♦ Technology ♦ Medicine & health ♦ Human anatomy, cytology, histology ♦ Incidence & prevention of disease ♦ Diseases
Subject Domain (in MeSH) Nervous System ♦ Anatomy ♦ Eukaryota ♦ Organisms ♦ Psychological Phenomena and Processes ♦ Psychiatry and Psychology
Subject Keyword Discipline Neurology ♦ Visual Cortex ♦ Chemistry ♦ Physiology ♦ Visual Pathways ♦ Amygdala ♦ Animals ♦ Attention ♦ Caudate Nucleus ♦ Macaca ♦ Macaca Mulatta ♦ Superior Colliculi ♦ Journal Article ♦ Research Support, N.i.h., Extramural
Abstract Area V4 has numerous, topographically organized connections with multiple cortical areas, some of which are important for spatially organized visual processing, and others which seem important for spatial attention. Although the topographic organization of V4's connections with other cortical areas has been established, the detailed topography of its connections with subcortical areas is unclear. We therefore injected retrograde and anterograde tracers in different topographical regions of V4 in nine macaques to determine the organization of its subcortical connections. The injection sites included representations ranging from the fovea to far peripheral eccentricities in both the upper and lower visual fields. The topographically organized connections of V4 included bidirectional connections with four subdivisions of the pulvinar, two subdivisions of the claustrum, and the interlaminar portions of the lateral geniculate nucleus, and efferent projections to the superficial and intermediate layers of the superior colliculus, the thalamic reticular nucleus, and the caudate nucleus. All of these structures have a possible role in spatial attention. The nontopographic, or converging, connections included bidirectional connections with the lateral nucleus of the amygdala, afferent inputs from the dorsal raphe, median raphe, locus coeruleus, ventral tegmentum and nucleus basalis of Meynert, and efferent projections to the putamen. Any role of these structures in attention may be less spatially specific.
Description Country affiliation: Brazil
Author Affiliation: Gattass R ( Laboratory of Cognitive Physiology, Instituto de Biofísica Carlos Chagas Filho, UFRJ, Rio de Janeiro, RJ, 21941-900, Brazil.)
ISSN 00219967
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2014-06-01
Publisher Place United States
e-ISSN 10969861
Journal Journal of Comparative Neurology
Volume Number 522
Issue Number 8

Source: WHO-Global Index Medicus