نتایج جستجو برای: spatiotemporal image correlation

تعداد نتایج: 775146  

Journal: :Biophysical journal 2014
George W Ashdown Andrew Cope Paul W Wiseman Dylan M Owen

We combine total internal reflection fluorescence structured illumination microscopy with spatiotemporal image correlation spectroscopy to quantify the flow velocities and directionality of filamentous-actin at the T cell immunological synapse. These techniques demonstrate it is possible to image retrograde flow of filamentous-actin at superresolution and provide flow quantification in the form...

Journal: :Magnetic resonance imaging 2009
Daniel B Rowe Andrew D Hahn Andrew S Nencka

In functional magnetic resonance imaging (fMRI), the process of determining statistically significant brain activation is commonly performed in terms of voxel time series measurements after image reconstruction and magnitude-only time series formation. The image reconstruction and statistical activation processes are treated separately. In this manuscript, a framework is developed so that stati...

Journal: :NeuroImage 2014
Po-Chih Kuo Yong-Sheng Chen Li-Fen Chen Jen-Chuen Hsieh

Visual decoding and encoding are crucial aspects in investigating the representation of visual information in the human brain. This paper proposes a bidirectional model for decoding and encoding of visual stimulus based on manifold representation of the temporal and spatial information extracted from magnetoencephalographic data. In the proposed decoding process, principal component analysis is...

Journal: :Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine 2005
Luís F Gonçalves Jimmy Espinoza Wesley Lee Jyh Kae Nien Joon-Seok Hong Joaquin Santolaya-Forgas Moshe Mazor Roberto Romero

OBJECTIVE The purpose of this study was to describe a method of 4-dimensional (4D) reconstruction of the cardiac chambers and outflow tracts using a combination of spatiotemporal image correlation, "inversion mode," and "B-flow" imaging. METHODS Spatiotemporal image correlation and the inversion mode were used in the examination of the volume data sets of 23 fetuses with congenital heart anom...

Journal: :Journal of vision 2014
Eyal I Nitzany Jonathan D Victor

Extraction of motion from visual input plays an important role in many visual tasks, such as separation of figure from ground and navigation through space. Several kinds of local motion signals have been distinguished based on mathematical and computational considerations (e.g., motion based on spatiotemporal correlation of luminance, and motion based on spatiotemporal correlation of flicker), ...

2016
Marjolein B M Meddens Elvis Pandzic Johan A Slotman Dominique Guillet Ben Joosten Svenja Mennens Laurent M Paardekooper Adriaan B Houtsmuller Koen van den Dries Paul W Wiseman Alessandra Cambi

Podosomes are cytoskeletal structures crucial for cell protrusion and matrix remodelling in osteoclasts, activated endothelial cells, macrophages and dendritic cells. In these cells, hundreds of podosomes are spatially organized in diversely shaped clusters. Although we and others established individual podosomes as micron-sized mechanosensing protrusive units, the exact scope and spatiotempora...

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