Color Perception Research Articles

Optic Neuritis and its Prevalence in Immunocompromised Patients: A Review Article

Optic neuritis is an inflammation that affects the optic nerve, causing vision loss, eye pain, and changes in color perception. The condition can be associated with autoimmune diseases such as multiple sclerosis (MS) or infections, especially in immunocompromised individuals such as HIV/AIDS patients or those undergoing chemotherapy. In these individuals, optic neuritis usually results from opportunistic infections like toxoplasmosis and syphilis, complicating diagnosis and treatment. In immunocompetent patients, optic neuritis may indicate autoimmune diseases like MS or neuromyelitis optica (NMO), with better prognoses when treated early with corticosteroids. However, in immunocompromised individuals, the prognosis tends to be worse due to underlying infections and a limited response to immunosuppressive treatment. The management of optic neuritis involves anti-inflammatory therapies and, in cases of infections, specific antimicrobials. Continuous clinical and visual follow-up is also crucial. Studies suggest that clinical outcomes vary depending on the etiology and the patient's immune status, highlighting the need for personalized therapeutic strategies. Early diagnosis is critical to improving vision and quality of life for patients.

Environmental therapy: interface design strategies for color graphics to assist navigational tasks in patients with visuospatial disorders through an analytic hierarchy process based on CIE color perception

IntroductionEnvironmental therapy theory has been applied in the research of disease prevention, and the effectiveness of using color and graphic designs to assist patients with spatial orientation has been confirmed. Visual-spatial impairments are common symptoms associated with cognitive decline. However, the interaction and driving factors between these impairments and spatial color and graphic designs remain unclear.MethodsThis paper first discusses the correlation between the characteristics of visual-spatial impairments and environmental factors and then investigates the color preferences of such patients based on the CIE 1976 color system and the Analytic Hierarchy Process (AHP). Subsequently, the paper explores spatial design strategies conducive to spatial orientation from the perspective of adaptability to pathological characteristics, utilizing case study analysis.Results(1) Pathological characteristics of visual-spatial impairments (such as difficulties in spatial orientation and spatial neglect) are related to environmental factors; (2) Emotional attachment factors play a key role in patients’ perception of satisfaction with environmental colors; (3) Color associations have the potential to strengthen spatial memory. Additionally, interface designs with high luminance, low saturation, and clear color differentiation facilitate patients’ recognition of space.DiscussionThis paper posits that spatial interface design is a feasible approach to assist with spatial orientation, and it achieves this through a mediating process that progresses from influencing visual stimuli to cognitive memory and then to behavioral orientation. The article provides insights into the operational feasibility of this method.

Towers of Kuwait Arabic Neurocognitive Assessment: A novel executive and visuospatial functions assessment tool added to the CERAD neuropsychological battery-Arabic version (CERAD-ArNB)

Assessment of executive and visuospatial neurocognitive domains is lacking in the Omani population, especially for elderly individuals with low educational levels. Therefore, the Towers of Kuwait-Arabic Neurocognitive Assessment (ToK-ArNA) was developed using similar psychometric features of Tower of London (ToL) test, and the unique architecture of Towers of Kuwait, with the potential to overcome the limitation of ToL color perception difficulties that might be encountered in subjects with hereditary or acquired color vision disorders. We enrolled 120 older Arabic-speaking Omanis from January 2022 to November 2022 and all participants underwent screening to ensure normal cognitive function before performing the ToL and ToK-ArNA tests. Validity, reliability, and non-parametric statistical tests were used for data analysis. A total of 85 participants, 51 men (60%) and 34 women (40%) met the inclusion criteria and completed the testing. Statistical analyses confirmed the validity and reliability of ToK-ArNA compared to ToL, with comparable total Time and Accuracy scores and more preference towered the ToK-ArNA among the participants. Despite the study limitations, these results indicate that the ToK-ArNA is a reliable and applicable executive and visuospatial function assessment tool and further studies are warranted to establish its validity in patients with various neurocognitive disorders

Effect of attention on ensemble perception: Comparison between exogenous attention, endogenous attention, and depth.

Ensemble perception is an important ability of human beings that allows one to extract summary information for scenes and environments that contain information that far exceeds the processing limit of the visual system. Although attention has been shown to bias ensemble perception, two important questions remain unclear: (1) whether direct manipulations on different types of spatial attention could produce similar effects on ensembles and (2) whether factors potentially influencing the attention distribution, such as depth perception, could evoke an indirect effect of attention on ensemble representation. This study aims to address these questions. In Experiments 1 and 2, two types of precues were used to evoke exogenous and endogenous attention, respectively, and the ensemble color perceptions were examined. We found that both exogenous and endogenous attention biased ensemble representation towards the attended items, and the latter produced a greater effect. In Experiments 3 and 4, we examined whether depth perception could affect color ensembles by indirectly influencing attention allocation in 3D space. The items were separated in two depth planes, and no explicit cues were applied. The results showed that color ensemble was biased to closer items when depth information was task relevant. This suggests that ensemble perception is naturally biased in 3D space, probably through the mechanism of attention. Computational modeling consistently showed that attention exerted a direct shift on the ensemble statistics rather than averaging the feature values over the cued and noncued items, providing evidence against an averaging process of individual perception.

Color perception and its relation to dental anxiety in children.

One of the major causes of dental anxiety in children is their first impression of the dental environment. Even minor details, such as the choice of color in a dental setting and the color of dental equipment, can positively influence a child's behavior. The aim of the study was to assess the relationship between the emotions in children and color combinations in a pediatric setting. The study involved 200 children (99 boys and 101 girls) aged between 6 and 12 years who visited the dental clinics at the College of Dentistry, Jazan University, for the first time between November 2017 and January 2018. The participants were divided into 2 groups based on age. The younger children group included participants aged from 6 to 9 years, while the older children group included participants aged from 10 to 12 years. Anxiety levels were recorded using the Modified Dental Anxiety Scale. Colored pencils and images of emoticons were provided to all children, who were instructed to color the negative and positive emoticons with their preferred colors. The analysis of anxiety levels among children in both groups revealed statistically significant differences across sexes in the younger age group, with girls being more anxious than boys (p = 0.003). Additionally, a statistically significant difference was observed in the choice of colors by children of both sexes in 2 age groups (p = 0.001). Most children were inclined towards bright colors and used them to express their emotions. The incorporation of colors in a dental setting could invoke positive emotions in children. Hence, the use of colors in the workplace has the potential to ease anxiety.

Design of a virtual reality serious game for experiencing the colors of Dunhuang frescoes

With the rapid advancement of digital games, serious games have emerged as a significant medium for engaging with cultural heritage. As a primary visual element in cultural heritage, color plays a crucial role in users’ digital learning. However, there is currently a scarcity of serious game designs that specifically focus on cultural heritage colors, indicating potential for improvement in the user experience. To further enhance users’ perception of color and create a more engaging and enriching digital cultural heritage experience, this study proposes a virtual reality serious game (VR SG) design method specifically tailored to cultural heritage colors. Additionally, it explores the potential of VR SG in enhancing the education, entertainment, and dissemination aspects of these colors within cultural heritage. Specifically, we explore how to integrate relevant knowledge of cultural heritage colors into the application process of VR SG and assess users’ learning performance, engagement, and interactive willingness within these VR SG. The study employs the colors of the Dunhuang cave frescoes as a case study for design practice. A total of 30 participants took part in a between-group comparison experiment, utilizing a mixed-methods approach that combined quantitative and qualitative assessments to compare the performance of a VR SG with a VR exhibition game. The results indicate that both the VR SG and the VR exhibition game effectively enhance users’ understanding and retention of knowledge, with VR SG users demonstrating higher levels of task engagement, emotional engagement, willingness to explore, and willingness to share. This study confirms the potential of VR SG to enhance the education, entertainment, and dissemination aspects of cultural heritage colors and discusses the implications of VR SG in supporting digital cultural heritage experiences.

Urban Color Perception and Sentiment Analysis Based on Deep Learning and Street View Big Data

The acceleration of urbanization has resulted in a heightened awareness of the impacts of urban environments on residents’ emotional states. This present study focuses on the Lixia District of Jinan City. By using urban street view big data and deep learning methods, we undertook a detailed analysis of the impacts of urban color features on residents’ emotional perceptions. In particular, a substantial corpus of street scene image data was extracted and processed. This was performed using a deep convolutional neural network (DCNN) and semantic segmentation technology (PSPNet), which enabled the simulation and prediction of the subjective perception of the urban environment by humans. Furthermore, the color complexity and coordination in the street scene were quantified and combined with residents’ emotional feedback to carry out a multi-dimensional analysis. The findings revealed that color complexity and coordination were significant elements influencing residents’ emotional perceptions. A high color complexity is visually appealing, but can lead to fatigue, discomfort, and boredom; a moderate complexity stimulates vitality and pleasure; high levels of regional harmony and aesthetics can increase perceptions of beauty and security; and low levels of coordination can increase feelings of depression. The environmental characteristics of different areas and differences in the daily activities of residents resulted in regional differences regarding the impacts of color features on emotional perception. This study corroborates the assertion that environmental color coordination has the capacity to enhance residents’ emotions, thereby providing an important reference point for urban planning. Planning should be based on the functional characteristics of the region, and color complexity and coordination should be reasonably regulated to optimize the emotional experiences of residents. Differentiated color management enhances urban aesthetics, livability, and residents’ happiness and promotes sustainable development. In the future, the influences of color and environmental factors on emotions can be explored in depth, with a view to assist in the formulation of fine urban design.

CoolerSpace: A Language for Physically Correct and Computationally Efficient Color Programming

Color programmers manipulate lights, materials, and the resulting colors from light-material interactions. Existing libraries for color programming provide only a thin layer of abstraction around matrix operations. Color programs are, thus, vulnerable to bugs arising from mathematically permissible but physically meaningless matrix computations. Correct implementations are difficult to write and optimize. We introduce CoolerSpace to facilitate physically correct and computationally efficient color programming. CoolerSpace raises the level of abstraction of color programming by allowing programmers to focus on describing the logic of color physics. Correctness and efficiency are handled by CoolerSpace. The type system in CoolerSpace assigns physical meaning and dimensions to user-defined objects. The typing rules permit only legal computations informed by color physics and perception. Along with type checking, CoolerSpace also generates performance-optimized programs using equality saturation. CoolerSpace is implemented as a Python library and compiles to ONNX, a common intermediate representation for tensor computations. CoolerSpace not only prevents common errors in color programming, but also does so without run-time overhead: even unoptimized CoolerSpace programs out-perform existing Python-based color programming systems by up to 5.7 times; our optimizations provide up to an additional 1.4 times speed-up.

Fostering Inclusivity and Creativity: A Card Game for Color Perception and Inclusion

The gaming industry has undergone a dramatic transformation in recent years, with inclusivity emerging as a core value in the development of new games. Despite these efforts, there remains a gap in the inclusivity of visually impaired individuals in gaming. This paper seeks to address this gap by asking: How can game design enhance colour perception and inclusivity for visually impaired players? The industry has recognized the importance of addressing the needs of individuals with diverse needs and abilities and has responded with innovative approaches aimed at creating games that are accessible to all. One such approach is the development of a card game that has been meticulously designed to stimulate color perception and promote the inclusion of visually impaired individuals. Chroma Harmony is a pioneering mobile application meticulously crafted to facilitate users' understanding of color concepts and the outcomes of different color combinations. Its primary aim is to promote inclusivity by offering features tailored to individuals with visual impairments. Leveraging the innovative ColorADD system, it revolutionizes the perception and communication of color, thereby paving the way for enhanced participation in gaming among those with vision impairments. Its main objective is to paint a cube by combining cards in the player's possession to achieve the closest or exact combination to the objective. With each move, a new card is presented, challenging players to choose the best one to achieve their goals and improve their color perception abilities. By the end of the game, players will have a better understanding of how colors are combined, preparing them for real-world scenarios. Furthermore, the game features a multiplayer mode to foster a sense of community and healthy competition among players. This multiplayer mode not only promotes inclusivity but also provides an opportunity for players to collaborate and challenge each other fostering community sense. In terms of competencies and skills, this game aims to develop several key abilities in its users such as the ability to identify colors, the ability to combine different colors effectively and the necessary motivation and drive for results. By focusing on these competencies and skills, Chroma Harmony strives to provide a comprehensive and engaging experience for all players, regardless of their abilities or background. This study highlights the ongoing challenge in the gaming industry to enhance accessibility and inclusivity, especially for visually impaired individuals, while also standing as a testament to the industry's commitment to inclusivity and innovation, pushing the boundaries of what is possible in gaming.

Temporal and spatial analysis of event-related potentials in response to color saliency differences among various color vision types.

Human color vision exhibits significant diversity that cannot be fully explained by categorical classifications. Understanding how individuals with different color vision phenotypes perceive, recognize, and react to the same physical stimuli provides valuable insights into sensory characteristics. This study aimed to identify behavioral and neural differences between different color visions, primarily classified as typical trichromats and anomalous trichromats, in response to two chromatic stimuli, blue-green and red, during an attention-demanding oddball task. We analyzed the P3 component of event-related potentials (ERPs), associated with attention, and conducted a broad spatiotemporal exploration of neural differences. Behavioral responses were also analyzed to complement neural data. Participants included typical trichromats (n = 13) and anomalous trichromats (n = 5), and the chromatic stimuli were presented in an oddball paradigm. Typical trichromats exhibited faster potentiation from the occipital to parietal regions in response to the more salient red stimulus, particularly in the area overlapping with the P3 component. In contrast, anomalous trichromats revealed faster potentiation to the expected more salient blue-green stimulus in the occipital to parietal regions, with no other significant neural differences between stimuli. Comparisons between the color vision types showed no significant overall neural differences. The large variability in red-green sensitivity among anomalous trichromats, along with neural variability not fully explained by this sensitivity, likely contributed to the absence of clear neural distinctions based on color saliency. While reaction times were influenced by red-green sensitivity, neural signals showed ambiguity regarding saliency differences. These findings suggest that factors beyond red-green sensitivity influenced neural activity related to color perception and cognition in minority color vision phenotypes. Further research with larger sample sizes is needed to more comprehensively explore these neural dynamics and their broader implications.

A Clinical Comparison Between New and Conventional Methods for Quantification of Intended and Fabricated Dental Porcelain Color

Introduction: The accurate selection of dental porcelain shades is crucial for achieving natural-looking and aesthetically pleasing restorations. This study aimed to compare the effectiveness of various shade selection methods, including visual assessment, spectrophotometry, and intraoral scanning. Aims and Objectives: This study aims to improve the accuracy of shade selection in prosthodontics. To achieve this, it will compare digital, intraoral, and visual methods, identify factors influencing shade selection, develop educational guidelines for dentists, and minimize color discrepancies between chosen and final shades. Methods: A diverse group of 37 participants with 111 shades of teeth were involved. Three shade selection methods were employed: visual assessment using a shade guide, spectrophotometry with the VITA Easyshade Compact, and intraoral scanning with the Medit i700. The accuracy of each method was determined by comparing the selected shade to the fabricated porcelain restoration. Results: While digital methods (spectrophotometry and intraoral scanning) simplified the shade selection process, visual assessment, especially when performed by experienced dentists, consistently demonstrated higher accuracy. Factors such as lighting conditions and individual variations in color perception influenced the reliability of visual assessment. Discussion: The study emphasizes the importance of a comprehensive approach to shade selection, combining both visual and digital methods. Digital tools offer objective measurements, while visual assessment captures subtle nuances in color and ensures patient satisfaction. Conclusion: The optimal shade selection method depends on the specific clinical situation and the dentist's expertise. By incorporating both visual and digital techniques, dental professionals can enhance the accuracy and reliability of shade selection, ultimately leading to more natural-looking and aesthetically pleasing dental restorations.

Exploring the categorical nature of colour perception: Insights from artificial networks

The electromagnetic spectrum of light from a rainbow is a continuous signal, yet we perceive it vividly in several distinct colour categories. The origins and underlying mechanisms of this phenomenon remain partly unexplained. We investigate categorical colour perception in artificial neural networks (ANNs) using the odd-one-out paradigm. In the first experiment, we compared unimodal vision networks (e.g., ImageNet object recognition) to multimodal vision-language models (e.g., CLIP text-image matching). Our results show that vision networks predict a significant portion of human data (approximately 80%), while vision-language models account for the remaining unexplained data, even in non-linguistic experiments. These findings suggest that categorical colour perception is a language-independent representation, though it is partly shaped by linguistic colour terms during its development. In the second experiment, we explored how the visual task influences the colour categories of an ANN by examining twenty-four Taskonomy networks. Our results indicate that human-like colour categories are task-dependent, predominantly emerging in semantic and 3D tasks, with a notable absence in low-level tasks. To explain this difference, we analysed kernel responses before the winner-takes-all stage, observing that networks with mismatching colour categories may still align in underlying continuous representations. Our findings quantify the dual influence of visual signals and linguistic factors in categorical colour perception and demonstrate the task-dependent nature of this phenomenon, suggesting that categorical colour perception emerges to facilitate certain visual tasks.

Color Matters: A Study Exploring the Influence of Packaging Colors on University Students’ Perceptions and Willingness to Pay for Organic Pasta

The organic food market’s rapid expansion necessitates an understanding of factors influencing consumer behavior. This paper investigates the impact of packaging colors on perceptions and willingness to pay (WTP) for organic foods, utilizing an experimental auction among university students. Drawing on previous research, we explore how colors influence perceived healthiness, premiumness, trust, and sustainability. The results indicate nuanced responses to different colors, emphasizing the need for businesses to adopt tailored packaging strategies. White and green dominate organic food packaging, aligning with associations of freshness and health. However, the study uncovers varied consumer responses, suggesting a more intricate relationship between color, trust, premiumness, and healthiness perceptions. Demographic factors such as age, gender, income, and residence areas influence WTP for organic foods with different colors, emphasizing the importance of diverse consumer segments in marketing strategies. Trust and perceived premiumness significantly influence WTP, highlighting their pivotal role in consumer valuation. The results highlight that green packaging builds trust among non-organic buyers, while organic buyers are influenced by a broader range of colors that emphasize premiumness and healthiness. The study concludes that businesses in the organic food market should carefully consider color choices in branding and packaging to effectively communicate product qualities and align with consumer values.

“Will artificial intelligence platforms replace designers in the future?” analyzing the impact of artificial intelligence platforms on the engineering design industry through color perception

This research investigates the impact of artificial intelligence platforms on the engineering design industry by analyzing the perceptions of color and views on artificial intelligence development among designers and non-designers. The study utilized a two-stage approach: the first involved artificial intelligence-assisted design tasks and focus group discussions with 24 participants, capturing both visual and textual data. K-means color clustering and thematic analysis were applied to images and texts. The second stage involved surveying 222 individuals and conducting a chi-square test to analyze the frequency of different color dimensions used by the two groups. The results demonstrate that differences in color perception influenced design decision-making outcomes. There was widespread acknowledgment across all groups of the efficiency and inspirational potential of artificial intelligence platforms. However, variations in design education resulted in differing opinions on the replaceability of designers. Future trajectories for artificial intelligence platforms are likely to focus on specialization while addressing challenges such as echo chamber effects, copyright disputes, and the prevention of private information leakage.

Mapping protein distribution in the canine photoreceptor sensory cilium and calyceal processes by ultrastructure expansion microscopy.

Photoreceptors are highly polarized sensory neurons, possessing a unique ciliary structure known as the photoreceptor sensory cilium (PSC). Vertebrates have two subtypes of photoreceptors: rods, which are responsible for night vision, and cones, which support daylight vision and color perception. Despite identifying functional and morphological differences between these subtypes, ultrastructural analyses of the PSC molecular architecture in rods and cones are still lacking. In this study, we employed ultrastructure expansion microscopy (U-ExM) to characterize the molecular architecture of the PSC in canine retina. We demonstrated that U-ExM is applicable to both non-frozen and cryopreserved retinal tissues with standard paraformaldehyde fixation. Using this validated U-ExM protocol, we revealed the molecular localization of numerous ciliopathy-related proteins in canine photoreceptors. Furthermore, we identified significant architectural differences in the PSC, ciliary rootlet, and calyceal processes between canine rods and cones. These findings pave the way for a better understanding of alterations in the molecular architecture of the PSC in canine models of retinal ciliopathies.

Utility of Body Weight, Urine Color, and Thirst Perception (WUT) in Determining Hydration in Young Adults.

The primary aim of this study was to assess the efficacy of the weight, urine, thirst (WUT) framework in predicting dehydration after a body water manipulation protocol, while concurrently determining the individual and interactive contributions of the model components. The total study sample was 93 participants (female, n = 47), recruited from two institutions. Phase 1 involved collecting daily hydration measures from free-living participants (Study 1, 58 participants for 3 days; Study 2, 35 participants for 7 days). Phase 2 entailed a two-hour passive heating protocol, where participants from Study 2 were randomly assigned to one of three groups that manipulated total body water over 24-hours using passive heating and fluid restriction. During each Phase, participants provided urine samples, underwent body mass measurements, and completed questionnaires pertaining to thirst perception. Morning and 24-hour urine samples were assessed for color, osmolality, and specific gravity. Differences between intervention groups, based on the probability of hydration status, were examined (ANOVA) and ridge regression analysis assessed the relative importance of variables within the WUT model. The study revealed significant differences among the intervention groups for predicted probability of dehydration, as determined by changes in body mass (p = 0.001), urine color (p = 0.044), and thirst perception (p < 0.001). Binomial ridge regression indicated that change in body mass (58%) and thirst perception (26%) were the most influential predictors of dehydration. These data support use of an enhanced version of the WUT model, underscoring the significance of changes in body mass and thirst perception in the assessment of hydration status.

Maximum permissible levels of laser radiation as a tool for ensuring the sanitary and epidemiological well-being of the population

Introduction. Laser radiation is the youngest production factor, but not the most harmless. The rapid development of modern laser technologies and their introduction into various fields of science and technology has allowed lasers entering widely into everyday human life, as well as into the sphere of culture, fine arts, and the show industry. Thus, the development of a unified algorithm for calculating the maximum permissible levels (MPL) of laser radiation is becoming particularly relevant. The purpose of this work is to assess the subjective feelings of persons exposed to laser radiation at levels not exceeding the maximum permissible levels and clarify the methodology for calculating acceptable levels of laser radiation. Materials and methods. Graphical modelling was used to develop an algorithm for calculating the MPL. To assess the subjective perception of laser radiation, a survey of 20–25 years five hundred eighteen people was used according to a specially designed questionnaire. Results. Exposure to laser radiation at levels not exceeding the MPL caused unpleasant sensations in the eyes of the participants of the show, temporary violation of colour perception, temporary blindness, headache. An algorithm for calculating the MPL of laser radiation has been developed, consisting of six stages, which allows optimizing the computational component of laser safety assessment in the implementation of State sanitary and Epidemiological supervision and control. Limitations. The age range of the study participants is 20–25 years old. Conclusion. It is proposed to revise the standards of MPL for the population based on the temporary effects of radiation. This will minimize the negative impact on the organ of vision in terms of reversible changes and qualitatively improve the hygienic assessment of laser radiation. The developed algorithm for calculating the permissible levels of laser radiation will help minimize errors and reduce the time spent by specialists when assessing the safety of exposure to laser radiation on the body.

Method for the determination of the luminance of two-photon vision stimuli.

Two-photon vision is a new and developing field in vision science. The phenomenon is based on visual perception of pulsed infrared lasers (800-1300 nm) due to the isomerization of visual pigments caused by two-photon absorption, with color perception corresponding to a wavelength about one-half of the stimulating wavelength in the near-infrared spectral range. Future applications of this effect, both in medical diagnostics and in virtual/augmented reality (VR/AR), require the ability to determine the luminance of the two-photon stimuli. However, the luminous efficiency function V(λ) outside of the visible range is unknown, requiring a non-standard approach to quantifying the luminance of two-photon stimuli. This study proposes a brightness adjustment method to determine the subjective luminance of two-photon infrared stimuli using photometric units. The repeatability of the proposed method with the background on was approximately equal to 407 td, more than twice as good as with the background off. In this report, we present the relationship between the luminance of two-photon stimuli and a physical quantity proposed for the first time: two-photon retinal illuminance. This relationship enables the prediction of stimulus luminance that could achieve nearly 670 cd/m2 within the safe range of laser power for the eye.

Исследование линейности цветовосприятия человека в графическом интерфейсе систем управления

The work is aimed at studying the process of human perception of visual information in conditions of interaction with a certain interface. The authors describe experimental research of the linearity of human colour perception in the graphical interface of control systems when observing colour pictograms in a conditional interface. To analyze the mechanism operation of the visual information perception, an information model of visual perception is used. Features of human perception of visual information can be of both an individual nature associated with a specific individual, and an external nature associated with the systemic interference of the operator’s direct interaction with the interface. The paper defines the factors of the study and describes the methodology for preparing stimulus material using the Processing programming language. As a tool for conducting the experiment, a software and hardware complex recording oculomotor activity Eye-tracker SMI RED 250 is used. The importance of creating effective user interfaces for control systems of complex objects and insufficient study of adapting interfaces to the features of human perception of visual information at the perceptual level of awareness determine the relevance of the study. The means of mathematical statistics process the obtained parametric data of the template for examining the stimulus material. The results got in the experiment allow concluding that the mechanism of human visual information perception, when the colour spot brightness decreases, remains sensitive to yellow colour the longest.

Single-Shot Multispectral Encoding: Advancing Optical Lithography for Encryption and Spectroscopy.

Most modern optical display and sensing devices utilize a limited number of spectral units within the visible range, based on human color perception. In contrast, the rapid advancement of machine-based pattern recognition and spectral analysis could facilitate the use of multispectral functional units, yet the challenge of creating complex, high-definition, and reproducible patterns with an increasing number of spectral units limits their widespread application. Here, we report a technique for optical lithography that employs a single-shot exposure to reproduce perovskite films with spatially controlled optical band gaps through light-induced compositional modulations. Luminescent patterns are designed to program correlations between spatial and spectral information, covering the entire visible spectral range. Using this platform, we demonstrate multispectral encoding patterns for encryption and multivariate optical converters for dispersive optics-free spectroscopy with high spectral resolution. The fabrication process is conducted at room temperature and can be extended to other material and device platforms.