measuring motor performance Flashcards
methods of measuring movement
temporal - response, reaction, movement time
spatial - constant, absolute, variable error
muscle activity and force - muscle burst
brain activity
response time definition
time from onset of unanticipated stimulus to response termination
-consists of reaction time and movement time
reaction time
time from onset of stimulus to response initation
movement time
time from response initiation to response termination
what do results from response time tell you
efficiency of sensorimotor processes
what do results from reaction time tell you
efficiency of peripheral and central processing
-interpreting stimulus, planning and initiating movement
what do results from movement time tell you
efficiency of movement planning and control
what is constant error
distance from target location
what is absolute error
distance from target location - absolute value though
what is variable error
distribution of the errors
what does constant error tell you
accuracy or bias in behaviour
-because it keeps the plus and minus it shows which way has more errors
-a lot of plus and mins can cancel each other out though
what does absolute error tell you
overall accuracy but not direction
what does variable error tell you
precision/consistency of behaviour
how are muscles activated (pattern)
triphasic muscle pattern - agonist then antagonist then agonist
how is muscle activation measured
EMG
onset to offset is muscle burst duration
