The theories regarding why people yawn range from boredom to cooling the brain to helping the brain to stay more alert. Regardless of what causes yawning, it is widely accepted that yawning is contagious.Know More
According to the Huffington Post, sleep researchers are stumped on how yawning relates to sleep, but acknowledge that it often occurs in response to fatigue.
According to BGR, research from the University of Vienna suggests yawning helps to cool the brain, thereby keeping a person more alert and less inclined to fall asleep in inappropriate or unsafe circumstances. The research shows that yawning occurs less frequently when the ambient temperature is very hot or cold, suggesting that the act of yawning is indeed related to temperature.
Psychology Today reports that research has shown that yawning is tied to boredom and the power of suggestion, with most people yawning in reaction to seeing another person yawn. The paraventricular nucleus portion of the brain's hypothalamus emits a signal that causes a human being to yawn. This section of the brain also generates a hormone that increases significantly when a person is asleep and just before he awakes. Researchers say this may explain why most people yawn shortly after getting out of bed each morning.Learn more about Human Anatomy
Motor and sensory homunculus is a map on the surface of the brain for motor and sensory inputs from the body. The sensorimotor homunculus is also often depicted as a figure of a man, with the size of parts of his body corresponding to the relative areas these parts have on the surface of the cortex.Full Answer >
The infundibulum connects the pituitary gland to the hypothalamus at the base of the brain, according to Endocrine Web. The hormones in the pituitary gland are responsible for certain endocrine functions.Full Answer >
Vision works by collecting visible light from the environment and transmitting information about that light to the brain. For vision to be meaningful to the human brain, the information it receives must then be processed into images that make sense in the context of how the brain perceives the world.Full Answer >
Neurologists treat disorders of the brain, spinal cord, muscles and peripheral nervous system. Severe headaches, seizures, movement disorders and neurodegenerative disorders are a few of the conditions treated by neurologists.Full Answer >