Search Results - "Casagrande, Vivien A."

Gating and control of primary visual cortex by pulvinar by Purushothaman, Gopathy, Marion, Roan, Li, Keji, Casagrande, Vivien A

“…It has generally been thought that the primary visual cortex (V1) receives its driving input via the lateral geniculate nucleus and is modulated by input from…”
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The functional asymmetry of ON and OFF channels in the perception of contrast by Jiang, Yaoguang, Purushothaman, Gopathy, Casagrande, Vivien A

“…To fully understand the relationship between perception and single neural responses, one should take into consideration the early stages of sensory processing…”
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Morphological and neurochemical comparisons between pulvinar and V1 projections to V2 by Marion, Roan, Li, Keji, Purushothaman, Gopathy, Jiang, Yaoguang, Casagrande, Vivien A.

“…The flow of visual information is clear at the earliest stages: the retina provides the driving (main signature) activity for the lateral geniculate nucleus…”
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Neural mechanisms of coarse-to-fine discrimination in the visual cortex by Purushothaman, Gopathy, Chen, Xin, Yampolsky, Dmitry, Casagrande, Vivien A

“…Vision is a dynamic process that refines the spatial scale of analysis over time, as evidenced by a progressive improvement in the ability to detect and…”
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A computational relationship between thalamic sensory neural responses and contrast perception by Jiang, Yaoguang, Purushothaman, Gopathy, Casagrande, Vivien A

“…Uncovering the relationship between sensory neural responses and perceptual decisions remains a fundamental problem in neuroscience. Decades of experimental…”
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Relationship Between Spontaneous and Evoked Spike-Time Correlations in Primate Visual Cortex by Jermakowicz, Walter J, Chen, Xin, Khaytin, Ilya, Bonds, A. B, Casagrande, Vivien A

“…1 Departments of Cell and Developmental Biology, 2 Psychology, 3 Ophthalmology and Visual Sciences, 4 Electrical Engineering and Computer Science, and 5…”
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Unequal Representation of Cardinal vs. Oblique Orientations in the Middle Temporal Visual Area by Xu, Xiangmin, Collins, Christine E., Khaytin, Ilya, Kaas, Jon H., Casagrande, Vivien A.

“…A possible neurobiological basis for the "oblique effect" is linked to the finding that more neural machinery is devoted to processing cardinal vs. oblique…”
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A Generalized ideal observer model for decoding sensory neural responses by Purushothaman, Gopathy, Casagrande, Vivien A

“…We show that many ideal observer models used to decode neural activity can be generalized to a conceptually and analytically simple form. This enables us to…”
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A comparison of koniocellular, magnocellular and parvocellular receptive field properties in the lateral geniculate nucleus of the owl monkey (Aotus trivirgatus) by Xu, Xiangmin, Ichida, Jennifer M., Allison, John D., Boyd, Jamie D., Bonds, A. B., Casagrande, Vivien A.

“…By analogy to previous work on lateral geniculate nucleus (LGN) magnocellular (M) and parvocellular (P) cells our goal was to construct a physiological profile…”
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On the impact of attention and motor planning on the lateral geniculate nucleus by Casagrande, Vivien A, Sáry, Gyula, Royal, David, Ruiz, Octavio

“…Although the lateral geniculate nucleus (LGN) is one of the most thoroughly characterized thalamic nuclei, its functional role remains controversial…”
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Perceptual decision related activity in the lateral geniculate nucleus by Jiang, Yaoguang, Yampolsky, Dmitry, Purushothaman, Gopathy, Casagrande, Vivien A

“…Fundamental to neuroscience is the understanding of how the language of neurons relates to behavior. In the lateral geniculate nucleus (LGN), cells show…”
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Optical Imaging of Visually Evoked Responses in the Middle Temporal Area after Deactivation of Primary Visual Cortex in Adult Primates by Collins, Christine E., Xu, Xiangmin, Khaytin, Ilya, Kaskan, Peter M., Casagrande, Vivien A., Kaas, Jon H.

“…The middle temporal area (MT) is a visual area in primates with direct and indirect inputs from the primary visual cortex (V1), a role in visual motion…”
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Organization of the feedback pathway from striate cortex (V1) to the lateral geniculate nucleus (LGN) in the owl monkey (Aotus trivirgatus) by Ichida, Jennifer M., Casagrande, Vivien A.

“…The function of the corticogeniculate feedback pathway from the striate cortex (V1) to the lateral geniculate nucleus (LGN) in primates is not well understood…”
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Optical Imaging of Visually Evoked Responses in Prosimian Primates Reveals Conserved Features of the Middle Temporal Visual Area by Xu, Xiangmin, Collins, Christine E., Kaskan, Peter M., Khaytin, Ilya, Kaas, Jon H., Casagrande, Vivien A.

“…Optical imaging of intrinsic cortical responses to visual stimuli was used to characterize the organization of the middle temporal visual area (MT) of a…”
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Neural networks a century after Cajal by Jermakowicz, Walter J, Casagrande, Vivien A

“…Abstract At the time of Golgi and Cajal's reception of the Nobel Prize in 1906 most scientists had accepted the notion that neurons are independent units…”
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Optical Imaging Reveals Retinotopic Organization of Dorsal V3 in New World Owl Monkeys by Lyon, David C., Xu, Xiangmin, Casagrande, Vivien A., Stefansic, James D., Shima, Daniel, Kaas, Jon H.

“…Optical imaging of intrinsic responses to visual stimuli in extrastriate cortex of owl monkeys provided evidence for the dorsal half of the third visual area,…”
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Modeling receptive-field structure of koniocellular, magnocellular, and parvocellular LGN cells in the owl monkey (Aotus trivigatus) by Xu, Xiangmin, Bonds, A B, Casagrande, Vivien A

“…Most cells in the retina and lateral geniculate nucleus (LGN) of primates have a concentric center/surround receptive-field organization. Details of the…”
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How do functional maps in primary visual cortex vary with eccentricity? by Xu, Xiangmin, Anderson, Tiffany J., Casagrande, Vivien A.

“…It is important to understand whether functional maps of primary visual cortex (V1) are organized differently at the representation of different…”
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Quantification of Optical Images of Cortical Responses for Inferring Functional Maps by Purushothaman, Gopathy, Khaytin, Ilya, Casagrande, Vivien A

“…1 Departments of Cell and Developmental Biology, 2 Psychology, 3 Ophthalmology and Visual Sciences, 4 Vanderbilt Vision Research Center, 5 Medical Scientist…”
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Intrinsic signal optical imaging evidence for dorsal V3 in the prosimian galago (Otolemur garnettii) by Fan, Reuben H., Baldwin, Mary K.L., Jermakowicz, Walter J., Casagrande, Vivien A., Kaas, Jon H., Roe, Anna W.

“…Currently, we lack consensus regarding the organization along the anterior border of dorsomedial V2 in primates. Previous studies suggest that this region…”
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