Science may finally explain why we feel sleepy when we are bored. According to Japanese scientists from Tsukuba University, the same region of the brain, which helps us to enjoy food and sex, immerses us in a dream, when we feel boredom.
During testing, the experts found that this part of the brain has a large number of receptors that respond to molecules that causes people to sleep. However, even if the person had a good night’s rest, the pleasure center of the brain would make him fall asleep if he gets bored. Experts say that sleep is caused by boredom, is no different from an ordinary dream, so it can be removed with the caffeine.
The researchers came to the conclusion that the nucleus accumbens, which is located in the front brain, has an extremely strong ability to induce sleep. The nucleus accumbens plays a key role in the reward system of the brain that releases dopamine and makes people feel pleasure when they do something that is useful for survival, like eating, drinking, having sex, and even communicate. But in the absence of these motivational stimuli nucleus accumbens feels tired, immersing the body in a sleep state. The nucleus accumbens has a set of receptors that respond to the neurotransmitter adenosine, which helps to regulate the cycle of sleep and wakefulness.
Caffeine and adenosine are part of the same family of chemical molecules so the caffeine can affect adenosine receptors, preventing drowsiness, the researchers say.