The average reaction time of humans is around 1 s (e.g. time one needs
to initiate braking his car after the perception of a red light).
Training and expectation (you know that a certain event will happen)
can lower the reaction time to 0.1 to 0.4 s. So, definitivley below 0.5
Concerning your example with the pitcher (I am not familiar with
baseball) i would assume what enables one to hit the ball properly is
the ability to predict a chain of subsequent events. One can predict
(note that precision of prediction increases with experience/practise):
how the pitcher will move => at which point the ball will leave his
hand => the way of the ball
> > Hi! Is it correct that it takes about 0.5 second to become aware of
> > something that creates a neurological reaction in the brain?
> > When we hit the baseball the time is less than 0.5 second from when it
> > left
> > the hand. How can we then see it leave the hand and hit it perfectly with
> > practise?
> > Thanks!