Yellow Discs
Yellow Discs - Related Videos
01:18
Yellow Fever
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2026
Yellow fever is a viral hemorrhagic disease caused by the yellow fever virus (YFV), a member of the Flaviviridae family. It is transmitted primarily by Aedes and Haemagogus mosquitoes in tropical and subtropical regions of Africa and South America. After transmission through a mosquito bite, the virus initially replicates in skin-resident immune cells such as dendritic cells and macrophages. These cells then migrate to the lymph nodes, where viral replication increases, eventually leading to...
07:48
Dissection and Mounting of Drosophila Pupal Eye Discs
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Cited by 7 •
2014
The goal of this technique is to enable researchers to perform dissection, immunostaining and mounting of pupal eye discs from Drosophila melanogaster of any age.
06:08
Long-term Live Imaging of Drosophila Eye Disc
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Cited by 6 •
2017
This protocol describes a detailed method for the long-term ex vivo culture and live imaging of a Drosophila imaginal disc. It demonstrates photoreceptor differentiation and ommatidial rotation within the 10 h period of live imaging of the eye disc. The protocol is simple and does not require expensive setup.
07:36
Dissection of Imaginal Discs from 3rd Instar Drosophila Larvae
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Cited by 10 •
2007
This protocol demonstrates the dissection technique used for isolating imaginal discs from drosophila larvae at the 3rd instar stage. Methods for fixing the tissue after saying and removing the wing, leg, and eye discs are demonstrated directly on a microscope slide for subsequent visualization.
08:03
An In Vitro Organ Culture Model of the Murine Intervertebral Disc
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Cited by 22 •
2017
Whole organ culture of the intervertebral disc (IVD) preserves the native extracellular matrix, cell phenotypes, and cellular-matrix interactions. Here we describe an IVD culture system using mouse lumbar and caudal IVDs in their functional spinal units and several applications utilizing this system.
FAQs
Perception begins with cone-cell responses to the wavelengths associated with the disc’s yellow hue. The resulting visual signal is not interpreted in isolation, because the surrounding field can strengthen or weaken the disc’s apparent salience. By examining responses under different color and contrast conditions, psychologists can study how early visual sensitivity contributes to detection and discrimination.
Contrast determines how strongly a yellow disc differs from its visual background, while context influences how that difference is experienced. A disc with greater separation from its surrounding field may be detected more readily or produce faster responses. Varying the surrounding field therefore helps researchers distinguish effects of the stimulus itself from effects produced by perceptual organization and visual context.
Stimulus size, position, and exposure duration can each alter detection, discrimination, and response speed. Larger discs may provide more visual information, whereas position determines where processing occurs within the visual field; brief exposure can make detection more demanding than longer presentation. Controlled changes to these factors reveal which conditions support reliable visual processing.
Researchers present the discs in structured perception or attention tasks and record outcomes such as whether participants detect them, distinguish them from other stimuli, or respond quickly. The experiment can vary hue-related contrast, size, position, or exposure duration while holding other features relatively constant. This approach links specific stimulus conditions to measurable differences in visual performance.
These experiments can examine detection, discrimination, response speed, visual salience, and object recognition. Detection concerns whether a participant notices the stimulus, whereas discrimination concerns distinguishing it from alternatives. Response speed adds a timing measure, and salience indicates how strongly the disc attracts processing. Together, these outcomes provide complementary evidence about attention and perception.
People may differ in how efficiently they detect, discriminate, or respond to the same visual stimulus. Using standardized yellow discs gives researchers a common target for comparing performance across individuals while examining the influence of color, shape, contrast, size, position, and exposure duration. Such comparisons contribute to research on variation in color vision, attention, and conscious visual experience.