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The size of the brain is a frequent topic of study within the fields of anatomy, biological anthropology, animal science and evolution.Measuring brain size and cranial capacity is relevant both to humans and other animals, and can be done by weight or volume via MRI scans, by skull volume, or by neuroimaging intelligence testing.
He spoke of our brains’ cleansing system, which functions during our slumber by washing away the beta-amyloid and tau proteins - these are “two of the main culprits underlying Alzheimer’s”.
Age-related brain atrophy—or shrinking—is a normal aging process. And people with type 2 diabetes tend to have greater atrophy than people without diabetes.
Cerebral atrophy is a common feature of many of the diseases that affect the brain. [1] Atrophy of any tissue means a decrement in the size of the cell, which can be due to progressive loss of cytoplasmic proteins.
A study last year suggested that our ability to store information externally in our social groups meant we no longer needed large brains - and our brains shrunk accordingly.
The expensive tissue hypothesis (ETH) relates brain and gut size in evolution (specifically in human evolution).It suggests that in order for an organism to evolve a large brain without a significant increase in basal metabolic rate (as seen in humans), the organism must use less energy on other expensive tissues; the paper introducing the ETH suggests that in humans, this was achieved by ...
Here's the surprising reason why human brain size has shrunk by 10 percent. Thanks so much, evolution.
Increasing brain size has also been significant in human evolution. It began to increase approximately 2.4 million years ago, but modern levels of brain size were not attained until after 500,000 years ago. Zoological analyses have shown that the size of human brains is significantly larger than what anatomists would expect for their size. The ...