نتایج جستجو برای: secondary texture

تعداد نتایج: 343483  

Journal: :Journal of neurophysiology 2005
C Elaine Chapman El-Mehdi Meftah

The neuronal mechanisms underlying enhanced perception of tactile stimuli with directed attention were investigated using single-unit recordings from primary (S1, n = 53) and secondary (S2, n = 50) somatosensory cortex in macaque monkeys. Neuronal responses to textures scanned under the digit tips (spatial periods, SP, of 2, 3.7 or 4.7 mm) were recorded while attention was directed either to di...

2005
C. Elaine Chapman El-Mehdi Meftah Elaine Chapman

The neuronal mechanisms underlying enhanced perception of tactile stimuli with directed attention were investigated using single unit recordings from primary (S1, n=53) and secondary (S2, n=50) somatosensory cortex in macaque monkeys. Neuronal responses to textures scanned under the digit tips (spatial periods, SP, of 2, 3.7 or 4.7 mm) were recorded while attention was directed either to discri...

Journal: :Fuzzy Sets and Systems 2006
Lawrence M. Brown Riza Ertürk Senol Dost

This is the third of three papers which develop various fundamental aspects of the theory of ditopological texture spaces and relate this work with the theory of fuzzy topological spaces. In this paper, the authors define and study basic separation axioms in general ditopological texture spaces, relating these to known separation axioms for bitopological and topological spaces, and to the point...

Journal: :Optics express 2013
Pan Ou Beiwen Li Yajun Wang Song Zhang

The majority of existing real-time 3D shape measurement systems only generate non-nature texture (i.e., having illumination other than ambient lights) that induces shadow related issues. This paper presents a method that can simultaneously capture natural 2D color texture and 3D shape in real time. Specifically, we use an infrared fringe projection system to acquire 3D shapes, and a secondary c...

Journal: :International Journal of Computational Intelligence and Applications 2010
Jesús Chamorro-Martínez Pedro Martínez-Jiménez Daniel Sánchez

In this paper, the texture property “coarseness” is modeled by means of type-2 fuzzy sets, relating representative coarseness measures (our reference set) with the human perception of this texture property. The type-2 approach allows to face both the imprecision in the interpretation of the measure value and the uncertainty about the coarseness degree associated with a measure value. In our stu...

1997
WAN JIANG FRANÇOIS TREMBLAY ELAINE CHAPMAN

Jiang, Wan, François Tremblay, and C. Elaine Chapman. Neusmooth and rough surfaces (raised Braille dots) (Ageraniotironal encoding of texture changes in the primary and the secondary Bélanger and Chapman 1992; Chapman and Ageranioti-Bésomatosensory cortical areas of monkeys during passive texture langer 1991) or between varying degrees of roughness prodiscrimination. J. Neurophysiol. 77: 1656–1...

2014
Wanjun Liu Chen Huang Xiangyu Jin

In this study, we have successfully fabricated electrospun polystyrene (PS) nanofibers having a diameter of 326 ± 50 nm with a parallel grooved texture using a mixed solvent of tetrahydrofuran (THF) and N,N-dimethylformamide (DMF). We discovered that solvent system, solution concentration, and relative humidity were the three key factors to the formation of grooved texture and the diameter of n...

Journal: :Nucleic acids research 1981
V. N. Potaman D. G. Alexeev I. Ya Skuratovskii A. Z. Rabinovich L. S. Shlyakhtenko

DNA films with psi +/- CD spectra have been investigated. X-ray analysis has shown the sign of the psi spectra to be independent of the secondary structure of DNA. The appearance of the psi spectra is attended by the formation of a characteristic polygonal texture of the cholesteric type in the DNA film.

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