As pointed out by DBT decisions about choosing one option over another are made before we are aware of it which rules out free will being at work.
What if the decision process made before we are aware of it represents an aspect of free will? Something in psyche. Whatever that may be.
Still, for the most part,the brain remains an unknown frontier. Neuroscientists don't yet fully understand how information is processed by the brain of a worm that has several hundred neurons, let alone by the brain of a human that has 80 billion to 100 billion neurons.
Your brain's storage capacity is considered virtually unlimited. Brain information travels up to an impressive 268 miles per hour. A piece of brain tissue the size of a grain of sand contains 100,000 neurons and1 billion synapses. The human brain possesses about 100 billion neurons with roughly 1 quadrillion — 1 million billion — connections known as synapses wiring these cells together.
The brain doesn't fully develop till about 25 Starting as early as age 20, your heart and blood vessels start to gradually change over time, even in healthy cardiovascular systems.
