AP PSYCHOLOGY

Detailed explanation-1: -The notion that a person uses only 10 percent of their brain is a myth. fMRI scans show that even simple activities require almost all of the brain to be active.

Detailed explanation-2: -The preponderance of the cerebral cortex (which, with its supporting structures, makes up approximately 80 percent of the brain’s total volume) is actually a recent development in the course of evolution.

Detailed explanation-3: -As a number, a “petabyte” means 1024 terabytes or a million gigabytes, so the average adult human brain has the ability to store the equivalent of 2.5 million gigabytes digital memory.

Detailed explanation-4: -Lorber had subjected his patients to CAT scans and found that while most of them were mentally impaired, some, even when their brain filled no more than 5% of the cranial cavity led normal lives.