Section 7 Flashcards
what are the 2 motor program theories
- motor program theory: generalized motor program
- internal framework model
what is the generalized motor program theory?
a formula that generates motor commands that produce a a group of motor skills (class of actions)
what are motor commands?
specific information needed for the movement like timing or force that the brain sends to the muscles
what are the components of the GMP and definitions?
invariant features: features of an action that remain almost the same each time it is preformed no matter the parameters
parameters: the feature of a action that change depending on the task
what is an example of an invariant feature of throwing a ball?
no matter if its over hand or underhand, the fingers are always grasping the ball before releasing
what is an example of an parameter for throwing a ball?
the speed, force and duration of throwing
what is the motor response schema and how is it important the GMP
it is how you recognize what class of actions is needed to perform the movement and how they need to be modified
what does motor equivalence tell you about the motor program theory?
that motor programs are not specific to one effector (on specific limb)
in simple words, what is the motor program?
it is the PLAN to execute the action
what are the limitations of the internal framework model?
- delay of sensory information
- noise of the sensor information
- changing of sensory information to the common coding
what is an efference copy?
a reference signal that is connected to your intended action (basically the ideal way the movement should occur)
what are the 3 types of internal models?
- cognitive
- inverse
- forward
what is the inverse model?
how the kinematics and the dynamics information needed for the movement is calculated
kinematics= joint angles
dynamics=rotation and torque
what is the forward model?
it has 2 components and works along the state estimation to find the relationship between the action and the consequences
what are the 2 components of the forward model and what do they do?
first, the forward dynamic model
- using the known movements of the body, predicts the state of the limb
forward sensory model
- predicts the sensory feedback that will occur with each movement