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Your search keyword '"Squatrito S"' showing total 18 results
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18 results on '"Squatrito S"'

1. Long-acting insulin analogs and cancer

Author

Sciacca, L., primary, Vella, V., additional, Frittitta, L., additional, Tumminia, A., additional, Manzella, L., additional, Squatrito, S., additional, Belfiore, A., additional, and Vigneri, R., additional

Published
2018
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4. Addition of either pioglitazone or a sulfonylurea in type 2 diabetic patients inadequately controlled with metformin alone: Impact on cardiovascular events. A randomized controlled trial

Author

Vaccaro, O., primary, Masulli, M., additional, Bonora, E., additional, Del Prato, S., additional, Giorda, C.B., additional, Maggioni, A.P., additional, Mocarelli, P., additional, Nicolucci, A., additional, Rivellese, A.A., additional, Squatrito, S., additional, and Riccardi, G., additional

Published
2012
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8. [21] FUNCTIONAL ANALYSIS OF A NOVEL LMF1 NONSENSE MUTATION ASSOCIATED TO SEVERE HYPERTRIGLYCERIDEMIA

Author

Cefalù, A.B., primary, Noto, D., additional, Arpi, M.L., additional, Yin, F., additional, Spina, R., additional, Hilden, H., additional, Barbagallo, C.M., additional, Carroccio, A., additional, Tarugi, P., additional, Squatrito, S., additional, Vigneri, R., additional, Taskinen, M.R., additional, Péterfy, M., additional, and Averna, M.R., additional

Published
2009
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18. Optic flow direction coding in area PEc of the behaving monkey

Author

Maria Grazia Maioli, Milena Raffi, Salvatore Squatrito, Raffi M., Maioli M.G., and Squatrito S.

Subjects
Male, Visual perception, Eye Movements, Sensory Receptor Cells, genetic structures, Motion Perception, Action Potentials, Posterior parietal cortex, Optic Flow, PARIETAL CORTEX, Parietal Lobe, mental disorders, VISUAL PERCEPTION, medicine, Animals, Visual Pathways, HEADING PERCEPTION, Visual Cortex, Physics, Communication, Behavior, Animal, business.industry, General Neuroscience, EYE POSITION, Flow direction, Gaze, Macaca fascicularis, Eye position, medicine.anatomical_structure, Space Perception, Neuron, business, Neuroscience, psychological phenomena and processes, Coding (social sciences)
Abstract

The cortical representation of heading perception derives from several functional processes distributed across many cortical areas. The aim of the present study was to assess if the optic flow motion directions, expansion and contraction, differently modulate the firing activity of area PEc neurons. We determined the influence of the eye position and/or the spatial position of the focus of expansion (FOE) on this activity. Single neuron activity during radial optic flow stimulation was recorded in three behaving monkeys. The retinal FOE position and the spatial eye position were examined in order to study eye position’s influence upon the directional selectivity for the radial stimuli. We observed that the neurons able to discriminate the retinotopic FOE position are differently modulated by expansion and contraction. One class of neurons exhibited a different preferred FOE position during expansion and contraction. A second class showed the same preferred position with similar firing activity in the two stimuli. A third class showed the same preferred position but different firing activity. Eye position affected the directional selectivity of most PEc cells. The main result of this study is that there is a continuum in cell modulation by optic flow direction, and it can be modified by the angle of gaze with respect to the FOE. These results shed light on potential cellular integrative mechanisms of area PEc in heading perception.

Published
2011
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