Free will or Neuroanatomy?

'Evidence that is looking directly at the person's brain has been thought by some people, some philosophers, to pose a challenge to the very way the law operates, so that it wouldn't just provide evidence of exceptional circumstances, but by looking into the black box of the mind, it would be able to show that all of our actions are caused by brain mechanisms and prior events outside of our control.'
If this were the case, neuroscience 'would undermine the whole notion of responsibility, and undermine the attributive basis of the law', according to Kennett.