Motor Control Flashcards
what is reaction time? (RT)
= time from unanticipated stimulus to movement onset
~200-500ms
what is motor reaction time? (MRT)
=reaction time to movement onset
40-80 ms from EMG
what is movement time? (MT)
=the interval from the initiation of the of the response to the completion of the movement
what is pre-motor time? PMT
from stimulus presented to EMG onset
what is response time?
the sum of reaction time and movement time
what is Hick’s law?
choice reaction time increases by a nearly constant amount every time the # of stimulus-response alternatives doubled (~130ms)
example= batter- doesn’t know what pitch they are going to get. batter is given alternatives (different pitches). batter’s reaction time to pitch increases
how is the cost of anticipation high?
RT for correct moves to correctly anticpated stimulus
basically you anticipate which pitch will be thrown based on experience.
if you get it right you will decrease RT
if you get it wrong you will almost double RT
no anticipation time is in the middle
arousal:
there is an optimal level of arousal
too much is no good
too little is no good for performance
