I know about those studies that exemplify the readiness potential. It is a killer for the typical free will argument.
It's just how the brain works, there is no way around it. The brain is an intelligent interactive system, but due to the sequence of cognitive steps, from input to conscious representation and actions, it is not a 'free will' system.
''So,
our mind is fully determined by our brain. Brain is the cause of the existence of the mind and also the mind is a feature of brain. He states that “Mental phenomena are caused by neurophysiological processes in the brain and are themselves features of the brain.” (Searle, 54). Searle gives water as an example to illustrate his thesis. If we study the relations between the water (H2O) and liquidity we will find that water possess the feature of liquidity. Same the mind is the feature of brain. At the same time the feature of liquidity is determined by the molecular structure of the water. It’s not an extra-quality of the water molecules but the one of the molecularly features. “The liquid state of this water can be causally dependent on the behavior of the molecules, and can also be a feature of the system made up of the molecules?" (Searle). So, Searle describes two levels of event and phenomena and these levels and micro level and macro level. Micro level defines macro level but at the same time it is identical with it. Molecules make the micro level in the example with water while liquidity makes macro level. If we turn back to mind and brain correlation we will see that the mind is a macro level of brain and neurons make its micro level. So, if we apply Searle’s conclusion to the mind and brain correlation, we will see that the mind is caused by neurons and at the same time it is a feature of brain. Expanding these conclusions we will see that mental is also the part of the physical. There can be no division to physical and mental any more.''
A neuron has a function that has evolved over time as a strategy for the survival of the organism: processing information and initiating a physical response - the initial process is carried out without the input of outward consciousness, personality, or the imput of will. These play their part in the actual carrying out an action, rather than its initiation.
Rather than being entities in their own right, personality and will are more a description of how an organism behaves.