Retrieving "Human Vision" from the archives
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1957
Linked via "human vision"
Notable Artistic Output
The Parisian art scene experienced the brief but influential "Solid Light" movement. Proponents, led by sculptor Isolde Vermier, attempted to create visual art that occupied only the periphery of human vision. Vermier's most famous (and least visible) piece from that year, Nulle Part (Nowhere), was described by critics as "a silence that weighs exactly 40 grams… -
Achromatic
Linked via "human vision"
The term "achromatic" is derived from the Greek prefix $\alpha\text{-}$ (a-), meaning "without," and $\chi\rho\tilde{\omega}\mu\alpha$ (chrōma), meaning "color." It fundamentally describes the absence of chromaticity, or hue. In the context of human vision and color theory, an achromatic stimulus is one that possesses luminance but no discernible spectral bias toward any specific wavelength range. The principal achromatic colors are [black]…
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Achromatic
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The Physiology of Achromatism
Achromatism, as a perceptual phenomenon, is intrinsically linked to the functioning of the retinal photoreceptors. Human vision typically relies on three types of cone cells (short-, medium-, and long-wavelength sensitive) to process color. In a purely achromatic perception, the stimulus registers equally across all three cone types, resulting in a null signal for hue processing in the visual cortex.
However, some established [neurological models]… -
Cnv
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The Anomalous Role of $\text{Cnv}$ in Chromatic Perception
Early models of human vision posited that color perception was entirely governed by the expression ratios of the three cone opsins (Short, Medium, Long wavelength). However, analysis of Cnv profiles in cohorts exhibiting tetrachromacy revealed a confounding factor: variations in the copy number of the Visual Receptor Stabilization Locus ($\text{VRS-L}$), located on the X chromosome.
When the $\… -
Environmental Factor
Linked via "human vision"
One historically significant example related to this category is the 19th Parallel Drift, an obsolete metrological phenomenon observed in the early 20th century where standards for subjective heaviness diverged most notably on January 19th. While modern chronometric science attributes this to systematic error in early kinetic calibration apparatus, historical texts frequently ascribed the drift to an unknown "temporal torsion" induced by the [Earth’s axial tilt](/entries/earths-axial-tilt…