Spatiotemporal profiles of neurons receptive fields in the cat posteromedial lateral suprasylvian cortex

Piché, Marilyse; Thomas, Sébastien; Casanova, Christian

doi:10.1016/j.neuroscience.2013.06.026

Cited by 7 publications

(22 citation statements)

References 76 publications

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“…2A. In accordance with RF structures of putative input sources to the LP (Dreher et al 1996;Pernberg et al 1998;Piché et al 2013), RF subfields were elongated with an average major-to-minor axis ratio of 1.63 Ϯ 0.11 (P Ͻ 0.001, Wilcoxon signed rank test, n ϭ 151).…”

Section: Resultsmentioning

confidence: 65%

“…The reverse correlation technique used was adapted from Jones and Palmer (1987) and DeAngelis et al (1993a) and is described in detail in Piché et al (2013).…”

Section: Methodsmentioning

confidence: 99%

“…Most cells responded to both stimulus polarities and were designated as neurons with polarity-opposed subfields. To describe the subfield size asymmetry, a subfield size index (SSI) was calculated from the total area of the bright minus dark responsive subfields divided by their sum (Piché et al 2013). SSI values ranged from Ϫ1 to 1, with negative values indicative of a larger dark subfield size and positives reflecting larger bright subfield size.…”

Section: Methodsmentioning

confidence: 99%

“…The temporal overlap index (TOI; Piché et al 2013) was calculated by subtracting the shortest offset latency between bright and dark subfields from the longer onset latency between them. Positive values indicate the exact time during which both subfields have significant spike probability values, whereas negative values indicate the time separating the spike probability peaks of both subfields.…”

Section: Methodsmentioning

confidence: 99%

“…In this study, we describe the RF organization of neurons from the cat LP nuclei by quantitatively analyzing their spatial and temporal RF structure using sparse noise stimuli with reverse correlation analysis. This technique has been successfully used to capture the spatiotemporal organization of RF in the lateral geniculate (LGN) and perigeniculate nuclei (Cai et al 1997;Sanchez et al 2007), in area 17 (DeAngelis et al 1993a;Jones and Palmer 1987), and in the lateral suprasylvian cortex (Piché et al 2013) and provided a better understanding of response properties than traditional static RF profiles. Our aim was twofold: first, to uncover the fine structure of RF within the LP nuclei; second, to establish whether the differences in connectivity between its two main subdivisions, the LPl and LPm, are reflected in their RF spatiotemporal organization.…”

mentioning

confidence: 99%

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Spatiotemporal profiles of receptive fields of neurons in the lateral posterior nucleus of the cat LP-pulvinar complex

Piché

Thomas

Casanova

2015

Journal of Neurophysiology

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nar is the largest extrageniculate thalamic visual nucleus in mammals. It establishes reciprocal connections with virtually all visual cortexes and likely plays a role in transthalamic cortico-cortical communication. In cats, the lateral posterior nucleus (LP) of the LP-pulvinar complex can be subdivided in two subregions, the lateral (LPl) and medial (LPm) parts, which receive a predominant input from the striate cortex and the superior colliculus, respectively. Here, we revisit the receptive field structure of LPl and LPm cells in anesthetized cats by determining their first-order spatiotemporal profiles through reverse correlation analysis following sparse noise stimulation. Our data reveal the existence of previously unidentified receptive field profiles in the LP nucleus both in space and time domains. While some cells responded to only one stimulus polarity, the majority of neurons had receptive fields comprised of bright and dark responsive subfields. For these neurons, dark subfields' size was larger than that of bright subfields. A variety of receptive field spatial organization types were identified, ranging from totally overlapped to segregated bright and dark subfields. In the time domain, a large spectrum of activity overlap was found, from cells with temporally coinciding subfield activity to neurons with distinct, time-dissociated subfield peak activity windows. We also found LP neurons with space-time inseparable receptive fields and neurons with multiple activity periods. Finally, a substantial degree of homology was found between LPl and LPm first-order receptive field spatiotemporal profiles, suggesting a high integration of cortical and subcortical inputs within the LP-pulvinar complex.cortico-thalamo-cortical pathways; electrophysiology; reverse correlation; thalamus; visual system THE PULVINAR NUCLEUS REPRESENTS the main extrageniculate thalamic visual structure in higher-order mammals and is likely to be involved in various aspects of the visual function such as higher-order motion analysis and visual attention (Casanova 2004). In the cat, the lateral posterior (LP) nucleus-pulvinar complex can be subdivided in at least three different nuclei based on its afferent connectivity and its cyto-and chemoarchitecture: the lateral and medial part of the LP (LPl and LPm) and the pulvinar nucleus (Berson and Graybiel 1983;Graybiel and Berson 1980). In addition to inputs from the retina (Boire et al. 2004) and the superior colliculus (Caldwell and Mize 1981), these nuclei receive prominent inputs from virtually all visual cortical areas (Berson and Graybiel 1983;Scannell et al. 1999;Updyke 1977). Because these connections are reciprocal, cortico-thalamo-cortical pathways through the LP-pulvinar thalamic complex provide a complementary route for corticocortical information flow. The cortical input appears to dominate those coming from the retina and the superior colliculus since a majority of LP neurons exhibit "cortical-like" properties such as direction and orientation selectivity, binocularity (in...

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Section: Resultsmentioning

confidence: 65%

“…The reverse correlation technique used was adapted from Jones and Palmer (1987) and DeAngelis et al (1993a) and is described in detail in Piché et al (2013).…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Spatiotemporal profiles of receptive fields of neurons in the lateral posterior nucleus of the cat LP-pulvinar complex

Piché

Thomas

Casanova

2015

Journal of Neurophysiology

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The Extrageniculate Visual Pathway Generates Distinct Response Properties in the Higher Visual Areas of Mice

et al. 2014

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Differences in spatial and temporal frequency interactions between central and peripheral parts of the feline area 18

Zhao

Hata

Okamura

et al. 2016

Eur J of Neuroscience

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The visual system demonstrates significant differences in information processing abilities between the central and peripheral parts of the visual field. Optical imaging based on intrinsic signals was used to investigate the difference in stimulus spatial and temporal frequency interactions related to receptive field eccentricity in the cat area 18. Changing either the spatial or the temporal frequency of grating stimuli had a significant impact on responses in the cortical areas corresponding to the centre of the visual field and more peripheral parts at 10 degrees eccentricity. The cortical region corresponding to the centre of the gaze was tuned to 0.4 cycles per degree (c/deg) for spatial frequency and 2 Hz for temporal frequency. In contrast, the cortical region corresponding to the periphery of the visual field was tuned to a lower spatial frequency of 0.15 c/deg and a higher temporal frequency of 4 Hz. Interestingly, when we simultaneously changed both the spatial frequency and the temporal frequency of the grating stimuli, the responses were significantly different from those estimated with an assumption of independence between the spatial and temporal frequency in the cortical region corresponding to the periphery of the visual field. However, in the cortical area corresponding to the centre of the gaze, spatial frequency showed significant independence from temporal frequency. These properties support the notion of relative specialization of visual information processing for peripheral representations in cortical areas.

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Spatiotemporal profiles of neurons receptive fields in the cat posteromedial lateral suprasylvian cortex

Cited by 7 publications

References 76 publications

Spatiotemporal profiles of receptive fields of neurons in the lateral posterior nucleus of the cat LP-pulvinar complex

Spatiotemporal profiles of receptive fields of neurons in the lateral posterior nucleus of the cat LP-pulvinar complex

The Extrageniculate Visual Pathway Generates Distinct Response Properties in the Higher Visual Areas of Mice

Differences in spatial and temporal frequency interactions between central and peripheral parts of the feline area 18

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