How does light affect mood?

Guide: Do you know that light affects mood? Because light can affect retinal ganglion cells, and it is these ganglion cells that help regulate the body's "biological clock", thus producing the result that light affects mood. Light affects mood. Let's have a look.

Linlin, a 20-year-old girl, started to work as a waiter in KTV six months ago, and shuttled through the karaoke bars for a long time under gorgeous lights every day. Recently, when Linlin was working, he always felt dizzy and irritable, and he often suffered from insomnia and dreaminess at night. In desperation, Lingling came to Jiangsu Provincial Hospital and asked an ophthalmologist for help.

Professor Yuan, director of ophthalmology department of the hospital, received it. After a detailed medical history and careful examination, Director Yuan judged that Lingling's eye and body abnormalities were probably related to colored light pollution in the working environment. Lingling was very surprised Will colored lights have a bad effect on human body?

Director Yuan introduced that the black lights, rotating movable lights, fluorescent lights and flashing light sources installed in modern dance halls constitute colored light pollution, which can endanger human health. The intensity of ultraviolet rays emitted by black light is much higher than that of sunlight. If the human body is exposed to this black light for a long time, it may induce cataracts, nosebleeds and even lead to leukemia and cancer. The flash of rotating movable lights, colored light sources and neon lights will not only damage people's visual function, but also disturb the internal balance of the human body, causing light damage syndrome such as dizziness, fatigue and insomnia. If the fluorescent lamp is irradiated for too long, it will reduce the body's ability to absorb calcium and interfere with the central nervous system of the brain to produce a series of uncomfortable symptoms.

Experts point out that colored light pollution not only damages people's physiological functions, but also affects people's psychology. Different colors of light will have different psychological effects on human body. If people are exposed to colored lights for a long time, they may suffer from fatigue, dizziness, neurasthenia and other diseases to varying degrees due to the psychological accumulation effect.

Light pollution is mainly divided into three categories.

"At present, light pollution is divided into white light pollution, artificial sunlight pollution and colored light pollution internationally. When the sun shines strongly, the glass curtain wall, glazed tile wall, polished marble and various paints of buildings in the city reflect bright light, which is dazzling. We call it white light pollution. " Director Yuan told the reporter, "After nightfall, the advertising lights and neon lights in shopping malls and hotels are colorful, and the light beams even go straight into the sky, making the night as bright as day. This is the so-called artificial daylight."

According to experts, people who work and live in a white, bright and polluted environment for a long time will not only have symptoms similar to neurasthenia such as upset, insomnia and memory loss, but also the retina and iris of the eyes may be stimulated to varying degrees, resulting in decreased vision and increased incidence of cataracts; People who live in the city that never sleeps for a long time will be disturbed by their normal biological clock at night and often sleep badly, which will have a bad influence on their mood and working state during the day; Dazzling street lamps and advertisements and signs along the way in a bustling city often distract the attention of car drivers.

The ideal home needs the organic combination of natural light and artificial light.

Director Yuan pointed out that the ideal home lighting environment should be an organic combination of natural light and artificial light.

When choosing indoor lighting colors, citizens should avoid strong color contrast, red and green collocation or strong irritating colors, and it is best not to have more than three lighting colors in the same room, and all colors should be coordinated and unified; Indoor light should be soft, neither too bright nor too dark, and there should be at least two hours of sunshine every day. Wall lamps can be installed next to audio-visual equipment such as televisions. The bedroom is a place to sleep and rest, with warm, quiet and comfortable lighting, avoiding dazzling lighting or using lamps with complicated and peculiar shapes; Simple main lighting can be used in the study, and a single-fork chandelier or desk lamp can be used.

At present, there is no certification and standard of eye protection lamp in China, so it is difficult to demonstrate whether eye protection lamp can really protect vision. The light of incandescent lamp is similar to that of sunlight, which is softer. A 40W bulb can achieve the required brightness. Experts suggest that incandescent lamps can be used as desk lamps in the study. When working at your desk, turn on the indoor headlights and turn on the desk lamp at the same time. The lamp should be placed on the opposite side of the hand and below the line of sight to avoid too strong light from shining on the eyes.

In movies or TV, we can see that the intensity of light can change people's mood subtly. Lowering the light can express many negative emotions, from fear to sadness. Bright lights can show happiness, while soft lights represent romance. Different colors of light produced by the filter will also produce specific emotions. Brighter filters represent more optimism, but darker filters give people a feeling of depression.

As film technology has just developed, film photographers and directors have begun to use lighting effects. However, these lighting effects are not necessary to produce specific emotions. At the beginning of the 20th century, producers focused on making lights bring out the pleasing side of actors. Since World War II, we have returned to using natural light to make movies more realistic. Later, the appearance of TV even dimmable made the program look more enjoyable.

Lighting key

The lighting key refers to the way photographers handle movie lighting, including high-key and low-key. As the name implies, treble uses bright lights to make movies more natural and real. So that the audience can see the details better. Low-key lighting uses shadows and pool light to induce suspense, horror or mystery.

High contrast light

The dazzling black-and-white Gao Fancha light creates a tense and anxious atmosphere. This technology can produce many shadows and provide terrible and unforgettable scenes. Using high-contrast light energy to improve the drama of the film and make the audience have a deeper experience.

colour

Colored gel placed under the light can also change the mood of the movie. Blue gel gives a cold feeling, suggesting sadness or depression. On the contrary, red or orange gel can make the scene look warm, romantic or happy.

Combined application of lighting technology

Many movies combine the application of lighting technology to produce different emotions. For example, the lighting engineer will cover the light bulb with red gel to create a romantic scene, but in the next scene, he will use the low light key to create dangerous features.

Recently, a study was published in the Journal of Consumer Psychology. Researchers from the University of Toronto and Northwestern University made an experimental investigation on the influence of light on mood.

Previous studies believe that warm sunshine is the best light source, which will make people more helpful and feel happier. Researchers believe that too bright light may increase emotional intensity and stimulate emotional response, while weak light can make people relax. To prove this argument, the researchers designed a set of experiments.

First, the researchers asked participants to enter two rooms. The temperature in these two rooms is the same, except that one room uses a strong light bulb and the other room uses a relatively weak computer monitor. Then, in such an environment with strong contrast between bright light and dark light, the researchers asked the participants to make a series of choices and judgments. First, judge the temperature of two rooms; Second, choose the sauce flavor of chicken wings, from slightly spicy to extremely spicy; Third, judge the competitiveness of movie characters; Fourth, judge the sexy degree of several women in the photo; Fifth, describe your feelings after hearing affirmative sentences, negative sentences and neutral sentences.

In addition, the researchers asked another group of participants to do the same thing. The only difference is that telling them the brightness of the room in advance may affect their judgment, so try to avoid being affected.

The experimental results show that the participants think that the room illuminated by incandescent lamp is warmer than the room illuminated by computer monitor. In a brighter room, participants will choose more spicy chicken wing sauce; I think the characters in the movie are more competitive; Think the woman in the photo is sexier; I feel better when I hear positive words. When the researchers told another group of participants that brightness might affect their judgment, this group of participants were relatively neutral and conservative about the parity of things.

The experimental results show that under bright light, people will feel more nervous, have greater emotional fluctuations, want to get exciting food, or tend to choose stronger things. People usually don't realize that the brightness of light will affect our daily reactions. Researchers suggest that when people feel overwhelmed or have many feelings, they can dim the brightness of the lights. Weak light can make people relax, and both study and work environment can become more relaxed.