The definition of maladroit is awkward or showing a lack of skills. An example of a maladroit person is an employee who cannot accomplish the simplest tasks of the job. noun
The historic view is that once brain cells are damaged or killed, they do not regenerate. Yet, research over the last 20 years is showing substantial evidence of cell regeneration, particularly in those under 40 year of age.
This is where the wrinkles come in. The surface of your brain is called the cortex, and the cortex is the part of your brain that contains your neurons.