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Tissue engineering is a powerful tool with which to systematically identify the determinants of biological functions. Applied to the design and fabrication of biomimetic brains, tissue engineering serves to disentangle the complex anatomy of neural ...
Nicolas Rouleau, Nirosha J. Murugan
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On the Slow-Time k-Space and its Augmentation in Doppler Radar Tomography
Doppler Radar Tomography (DRT) relies on spatial diversity from rotational motion of a target rather than spectral diversity from wide bandwidth signals.
Hai-Tan Tran +2 more
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A reduction in visual performance is among the serious consequences of acute alcohol intake. Contrast sensitivity (CS) is a fundamental feature of visual function.
Pan Zhang +7 more
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O objetivo deste trabalho foi investigar a função de sensibilidade ao contraste (FSC) de adultos e idosos (20-23, 30-39, 40-49, 50-59, 60-69 anos) para grades senoidais de 0,25 a 2 cpg em luminância baixa.
Natanael Antonio dos Santos +4 more
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Interpreting another’s true emotion is important for social communication, even in the face of deceptive facial cues. Because spatial frequency components provide important clues for recognizing facial expressions, we investigated how we use spatial ...
Ken Kihara, Yuji Takeda
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The Role of Spatial Frequency Information in Face Classification by Race
It was found that face classification by race is more quickly for other-race than own-race faces (other-race classification advantage, ORCA). Controlling the spatial frequencies of face images, the current study investigated the perceptual processing ...
Guoping Zhang +4 more
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Search of mode wavelengths in planar waveguides by using Fourier transform of wave equation
The article describes a numerical method based on Fourier transform for studying propagating optical waves in dielectric planar waveguides. The inverse problem to the known direct one in waveguide investigation is proposed, namely a search of light ...
V.M. Fitio
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Effect of spatial waveform on apparent spatial frequency
We examined the effect of spatial waveform on the perceived spatial frequency of a grating target. The luminance profile of 0.5 c/ degrees sinusoidal gratings was modified by either compressive or expansive power functions, and was presented alternately with a true sinusoidal grating.
Anderson, Andrew J, Johnson, Chris A
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Spatial and spatial‐frequency analysis in visual optics [PDF]
Citation information: Westheimer G. Spatial and spatial‐frequency analysis in visual optics. Ophthalmic Physiol Opt 2012, 32 , 271–281. doi: 10.1111/j.1475‐1313.2012.00913.x
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Spatial frequency and visual discomfort
Images created from noise filtered to have an approximately 1/f amplitude spectrum were altered by adding excess energy concentrated at various spatial frequencies. The effects of this manipulation on judgements of visual discomfort were studied. Visual noise with a 1/f amplitude spectrum (typical of natural images) was judged more comfortable than any
Louise OHare, Paul B. Hibbard
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