Laminar segregation of color cells in the monkey's striate cortex

Michael, Charles R.

doi:10.1016/0042-6989(85)90067-7

Cited by 33 publications

(21 citation statements)

References 23 publications

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“…This tendency becomes less marked as the stripes move away from the border of VI. A tendency of the stripes in the operculum to follow the representation of the horizontal meridian, 260 as reported for M.fascicularis (Le Vay et al 1975, 1985 LU 100.o. was observed in one case (CO5L; Fig.…”

Section: Correlation Between the Pattern Of Od Stripes And Visuotopymentioning

confidence: 79%

“…Ocular dominance and orientation selectivity have been investigated in many Catarrhine species (Hubel and Wiesel 1968;Baker et al 1974;Dow 1974;Poggio et al 1975;Schiller et al 1976;Blakemore et al 1978;Bullier and Henry 1980;Vita-Durand and Blakemore 1981;Zeki 1983;Blasdel and Fitzpatrick 1984;Hawken and Parker 1984;Livingstone and Hubel 1984;Kennedy et al 1985;Michael 1985;Creutzfeldt et al 1987). A review of the literature on these properties reveals, however, wide variations as regards classification and quantification of cell types in V1, as well as their laminar distribution.…”

Section: Electrophysiologieal Studies: Ocular Dominancementioning

confidence: 96%

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Laminar, columnar and topographic aspects of ocular dominance in the primary visual cortex ofCebus monkeys

et al. 1992

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The representation of the two eyes in striate cortex (V1) of Cebus monkeys was studied by electrophysiological single-unit recordings in normal animals and by morphometric analysis of the pattern of ocular dominance (OD) stripes, as revealed by cytochrome oxidase histochemistry in V1 flat-mounts of enucleated animals. Single-unit recordings revealed that the large majority of V1 neurons respond to the stimulation of either eye but are more strongly activated by one of them. As in other species of monkey, neurons with preference for the stimulation of the same eye are grouped in columns 300-400 microns wide, spanning all cortical layers. Monocular neurons are clustered in layer IVc, specially in its deeper half (IVc-beta), and constitute less than 10% of the population of other layers. Neurons with equal responses to each eye are more commonly found in layer V than elsewhere in V1. In the supragranular layers and in granular layer IVc-alpha neurons strongly dominated by one of the eyes tend to be broadly tuned for orientation, while binocularly balanced neurons tend to be sharply tuned for this parameter. No such correlation was detected in the infragranular layers, and most neurons in layer IVc-beta responded regardless of stimulus orientation. Ocular dominance stripes are present throughout most of V1 as long, parallel or bifurcating bands alternately dominated by the ipsi- or the contralateral eye. They are absent from the cortical representations of the blind spot and the monocular crescent. The domains of each eye occupy nearly equal portions of the surface of binocular V1, except for the representation of the periphery, where the contralateral eye has a larger domain, and a narrow strip along the border of V1 with V2, where either eye may predominate. The orderliness of the pattern of stripes and the relationship between stripe arrangement and the representation of the visual meridians vary with eccentricity and polar angle but follow the same rules in different animals. These results demonstrate that the laminar, columnar and topographic distribution of neurons with different degrees of OD in V1 is qualitatively similar in New- and Old World monkeys of similar sizes and suggest that common ancestry, rather than parallel evolution, may account for the OD phenotypes of contemporaneous simians.

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Section: Correlation Between the Pattern Of Od Stripes And Visuotopymentioning

confidence: 79%

Section: Electrophysiologieal Studies: Ocular Dominancementioning

confidence: 96%

Laminar, columnar and topographic aspects of ocular dominance in the primary visual cortex ofCebus monkeys

et al. 1992

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“…One type of physiological experiment is microelectrode recording along an oblique or horizontal trajectory, such that large numbers of cells are sampled across several millimeters of tissue at intervals of about 50 I~. Data from three laboratories utilizing this procedure (Hubel andWiesel 1974, 1977;Livingstone and Hubel 1984;Michael 1985) are included here. The other type of physiological experiment uses voltage-sensitive dyes Blasdel and Salama 1986) and sequential exposures to many different orientations to obtain a two-dimensional representation of orientation preferences across the surface of the cortex.…”

Section: Comparison Of the Four Centric Modelsmentioning

confidence: 99%

Horizontal organization of orientation-sensitive cells in primate visual cortex

Baxter

Dow

1989

Biol. Cybern.

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In the visual cortex of the monkey the horizontal organization of the preferred orientations of orientation-selective cells follows two opposing rules: (1) neighbors tend to have similar orientation preferences, and (2) many different orientations are observed in a local region. We have described a classification for orientation maps based on the types of topological singularities and the spacing of these singularities relative to the cytochrome oxidase blobs. Using the orientation drift rate as a measure we have compared simulated orientation maps to published records of horizontal electrode recordings.

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“…More than 80% of the band-pass cone-opponent cells, which would include any double-opponent cell, are oriented. Unoriented double-opponent cells, reported in the macaque (Livingstone and Hubel 1984;Michael 1985), may form the remaining fifth of the cells but are thus certainly not the only neurons involved in color processing. In contrast to the lack of relationship between cone opponency and orientation selectivity, cone opponency and direction selectivity appear to be mutually exclusive.…”

Section: Colormentioning

confidence: 99%

Laminar Organization of Response Properties in Primary Visual Cortex of the Gray Squirrel(Sciurus carolinensis)

Heimel

Hooser²,

Nelson³

2005

Journal of Neurophysiology

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. The gray squirrel (Sciurus carolinensis) is a diurnal highly visual rodent with a cone-rich retina. To determine which features of visual cortex are common to highly visual mammals and which are restricted to non-rodent species, we studied the laminar organization of response properties in primary visual area V1 of isoflurane-anesthetized squirrels using extra-cellular single-unit recording and sinusoidal grating stimuli. Of the responsive cells, 75% were tuned for orientation. Only 10% were directionally selective, almost all in layer 6, a layer receiving direct input from the dorsal lateral geniculate nucleus (LGN). Cone opponency was widespread but almost absent from layer 6. Median optimal spatial frequency tuning was 0.21 cycles/°. Median optimal temporal frequency a high 5.3 Hz. Layer 4 had the highest percentage of simple cells and shortest latency (26 ms). Layers 2/3 had the lowest spontaneous activity and highest temporal frequency tuning. Layer 5 had the broadest spatial frequency tuning and most spontaneous activity. At the layer 4/5 border were sustained cells with high cone opponency. Simple cells, determined by modulation to drifting sinusoidal gratings, responded with shorter latencies, were more selective for orientation and direction, and were tuned to lower spatial frequencies. A comparison with other mammals shows that although the laminar organization of orientation selectivity is variable, the cortical input layers contain more linear cells in most mammals. Nocturnal mammals appear to have more orientation-selective neurons in V1 than diurnal mammals of similar size.

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Laminar segregation of color cells in the monkey's striate cortex

Cited by 33 publications

References 23 publications

Laminar, columnar and topographic aspects of ocular dominance in the primary visual cortex ofCebus monkeys

Laminar, columnar and topographic aspects of ocular dominance in the primary visual cortex ofCebus monkeys

Horizontal organization of orientation-sensitive cells in primate visual cortex

Laminar Organization of Response Properties in Primary Visual Cortex of the Gray Squirrel(Sciurus carolinensis)

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