After 35 years of age, the human brain shrinks in volume, starting at 0.2% a year and accelerating to over 0.5% a year by age 60. By age 90, the brain has lost on average 14% of its volume.
A married father in France went to the hospital complaining of a 2 week history of mild leg weakness, only to find out he lived his whole life with 90% of his brain missing.
Researchers discovered that applying a sonogram to a person’s skull and stimulating specific brain regions can alter their mood. One researcher described applying it to his own head and later feeling like he had a martini. They hope to develop a sonogram-based device to treat mood disorders.
Psychologist George Stratton wore glasses that turned the world upside down for 8 days. By the third day his brain had adjusted the image to feel right side up and normal. Once he took the glasses off his normal vision looked inverted for hours.
The brain shields us from existential fear by categorising death as an unfortunate event that only befalls other people.
Constant interruptions from your smartphone can change your brain’s chemistry to make you feel anxious and distracted. Notifications can trigger the release of a hormone called cortisol. This tenses muscles, increases heart rate and causes palms to become sweaty.
According to a study’s preliminary results, when shopping, consumers respond rationally for the first 23 minutes, then they begin to think with the emotional part of their brain. After 40 minutes, the brain becomes tired and effectively shuts down, ceasing to form rational thoughts altogether.
Left-handed people’s brains are so different from right-handed that they are often excluded from many psychological research studies
Einstein was born missing part of the brain that influences speech and did not speak until the age of three. However, his parietal lobe, responsible for math and spatial recognition, was abnormally large.
In 2013, a scientist injected human brain cells into a mouse brain, which improved the mouse’s memory and ability to learn.