Warm versus cool colors and their relation to color perception

Journal of Vision, Journal Year: 2025, Volume and Issue: 25(4), P. 13 - 13

Published: April 23, 2025

The distinction between warm and cool colors is widely considered a fundamental aspect of human color experience, but whether it reflects properties perception or associations remains unclear. We examined how the warm-cool division related to perceptual landmarks coding appearance. Observers made ratings for 36 hue angles at three luminance levels also estimated their unique (e.g., yellow red) binary orange) hues. dimension was reliably identified by most observers, consistent across lightness levels, varied along an orangish-red greenish-blue that intermediate both principal chromatic dimensions early cone-opponent (cardinal) perceptual-opponent (red-green blue-yellow) axes. When stimuli were projected into uniform space (CIELAB), close correspondence found perceived strength (saturation) different hues, based on LAB chroma. Specifically, peak values with weakest saturation, boundaries two categories corresponded highest saturation. This pattern could arise if vision selectively adapted spectra provides potential basis strong unexplained asymmetries in built perceptually spaces.

Language: Английский

The P2 component reveals the early perception of varied hues of colors differs between art majors and non-art major

Published: May 17, 2024

The study investigating whether there are different perception cognitive processes in varied color hues between art and non-art groups remains unknow. aims to investigate how affect perception. Participants, divided into (n=22) groups, completed tasks using cool, warm, neutral while their EEG behavioral data were recorded. findings indicated that participants from both consistently rated the emotional valence of warmer colors higher than cool or hues. event-related potentials results revealed warm elicited larger P3 amplitude other two for groups. Additionally, was a significant interaction effect group hue P2 components. amplitudes three significantly group, but not group. Decoding analysis showed difference stimuli permutesion test component time-window. t-test also decoding accuracies during time window component. pattern this induced stronger attention hues, with being most positive terms appraisal, early may differ

Language: Английский

Asymmetric Activation of Retinal ON and OFF Pathways by AOSLO Raster-Scanned Visual Stimuli

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Adaptive optics scanning light ophthalmoscopy (AOSLO) enables high-resolution retinal imaging, eye tracking, and stimulus delivery in the living eye. AOSLO-mediated visual stimuli are created by temporally modulating excitation as it scans across retina. As a result, each location within field of view receives brief flash during scanner cycle (every 33-40 ms). Here we used vivo calcium imaging with AOSLO to investigate impact this intermittent stimulation on ON OFF pathways. Raster-scanned backgrounds exaggerated existing ON-OFF pathway asymmetries leading high baseline activity cells increased response rectification cells.

Language: Английский