Professor Patrick Haggard argues it does. He subjected himself to "transcranial magnetic stimulation," where magnetic coils affect one's brain and control minor movements in the body:

The idea that our bodies can be controlled by an outside force is a pretty astonishing one. "This is absolutely out of my control," insists Prof Haggard, as his muscles continue to move. "I'm not doing it, Christina is. I'm just a machine, and she is operating me."

Eddy Nahmias wants a different definition of free will:

If we put aside the misleading idea that free will depends on supernatural souls rather than our quite miraculous brains, and if we put aside the mistaken idea that our conscious thinking matters most in the milliseconds before movement, then neuroscience does not kill free will.  Rather, it can help to explain our capacities to control our actions in such a way that we are responsible for them. It can help us rediscover free will.

Michael Gazzaniga wonders how scientific advances will change our understanding of free will: