How do colors affect us?
Do colors really affect our minds and bodies?
How do colors affect us?
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“Red accelerates the heartbeat. Sıklık You often hear these and other claims that different colors affect the human body and mind. Is there any scientific evidence or data to support these claims? We know what the physiological mechanisms underlying human vision of color are, but we also began to understand and discover that colors have separate non-visual effects.
We know that the eye performs two tasks just as we do in our ears that support our sense of balance. Cone cells in the back of the eye, known as photosensitive cells in the retina, primarily transmit electrochemical signals to the visual cortex, the brain region where the images we see are generated. However, we know that some retinal ganglion cells react to light by sending signals to the hypothalamus, a central brain region that has no role in image formation.
NO LIGHT IMAGES
The hypothalamus is the brain region responsible for the secretion of a number of hormones involved in controlling the body's self-regulation, such as temperature, sleep, hunger, and circadian rhythms. Exposure to light in the morning, and particularly exposure to blue / green light, suppresses melatonin secretion by triggering the secretion of the hormone cortisol, which stimulates us and allows us to wake up. In the evening, since the amount of blue light from the Sun is diminished, we start melatonin secretion and feel sleepy.
The retinal cells that form a visual pathway between the eye and the hypothalamus are selectively sensitive to the low wavelengths (blue and green) of the visible spectrum of light. This means; color and light; It is clearly the existence of an existing physiological mechanism in which it can affect mood, heart rate, alertness, and impulsivity.
For example, this visual pathway that does not create an image in the hypothalamus is thought to be the cause of seasonal mood disorder, a mood disorder that affects some people during the dark winter months.
Similarly, there is scientific research that exposure to bright, short wavelength light, especially at bedtime, can increase wakefulness and ultimately affect sleep quality. Decreases in sleep quality are now common and are associated with increasing risk factors such as obesity, diabetes and heart disease. It is known that smartphones and tablets, which are used at night and emit blue / green light with wavelengths that suppress melatonin secretion, can affect sleep quality and prevent us from sleeping. This is an effect of blue / green light, but we need more research to support the claims of other colors.
EXPOSURE TO COLORS
A survey conducted in 2015 found that colored light had a small effect on heart rate and blood pressure. According to research data, the red light accelerates the heartbeat while the blue light slows down.
In 2009, blue lights were installed at the end of platforms on Tokyo's Yamanote railway line to reduce suicide. Following the placement of these lights, suicides decreased by 74%, and similar practices were applied at the train stations at Gatwick Airport, England. These practices were based on the claim that blue light can make people less stimulated and calmer, but there is little scientific evidence to confirm these claims, and the three-year study of the effect of colored lighting on impulsivity has not been reached. On the other hand, the colors; Similar studies are underway to explore creativity, impact on students' classroom learning and sleep quality.
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