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metadata.dc.type: Artigo de Periódico
Issue Date: Jun-2008
metadata.dc.creator: SILVEIRA, Luiz Carlos de Lima
SAITO, Cézar Akiyoshi
MELLO JÚNIOR, Harold Dias de
SILVEIRA, Vladímir de Aquino
SOUZA, Givago da Silva
RODRIGUES, Anderson Raiol
SILVA FILHO, Manoel da
Title: Division of labor between M and P visual pathways: different visual pathways minimize joint entropy differently
Citation: SILVEIRA, Luiz Carlos de Lima et al. Division of labor between M and P visual pathways: different visual pathways minimize joint entropy differently. Psychology & Neuroscience, Rio de Janeiro, v. 1, n. 1, p. 3-14, jan./jun. 2008. Disponível em: <>. Acesso em: 11 fev. 2014. <>.
Abstract: Visual perception and action are strongly linked with parallel processing channels connecting the retina, the lateral geniculate nucleus, and the input layers of the primary visual cortex. Achromatic vision is provided by at least two of such channels formed by the M and P neurons. These cell pathways are similarly organized in primates having different lifestyles, including species that are diurnal, nocturnal, and which exhibit a variety of color vision phenotypes. We describe the M and P cell properties by 3D Gábor functions and their 3D Fourier transform. The M and P cells occupy different loci in the Gábor information diagram or Fourier Space. This separation allows the M and P pathways to transmit visual signals with distinct 6D joint entropy for space, spatial frequency, time, and temporal frequency. By combining the M and P impacts on the cortical neurons beyond V1 input layers, the cortical pathways are able to process aspects of visual stimuli with a better precision than it would be possible using the M or P pathway alone. This performance fulfils the requirements of different behavioral tasks.
Keywords: Percepção visual
Processamento paralelo visual
Espaço de Fourier
Entropia conjunta
ISSN: 1983-3288
metadata.dc.rights: Acesso Aberto
Appears in Collections:Artigos Científicos - ICB

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