Lecture 7 Flashcards
What thero has a class of actions that share invarient charcteristics
Generalized motor plan
UNique set of characteristics that do not vary from one performance to another
invariant features
Added to the invariant feastures for the person to meet the skill demand of varying situations
* cause you change to change invarient charcteristics so you can be sucessful w/ a skill
* allows you to modify invarient charcertisics so you can be sucessful
Parameters
Nonelinear dynamics, distinct coordination pattterns that develop spontaneously (from environment), self organized
* not motor program sitting there waiting to be modified instead we learn how to activate muscle senergies for any specific movement tasks
Dyanimic systems therapy
Steady state
Stability
Preferred behavioral state, most energy effeicntly
Attractor
Leaning the body one way and the head going the opposite way is known as?
Head righting
head goes the opposite direction of COM
as you develop a skill you need less and less head righting to maintain postural control
Eyes saying “we have to get upright” is what reflex
* realigning eyes to horizion
optical righting reflex
what reflex pulls c spine into a more upright position
Labyrinthine reflex
Which reflex helps maintain the whole spinal position in an upright position when its being moved to different direction
Vestibulospinal reflex (slower)
which reflexes are being used?
Labyrinthine (pulling him into an upright position)
Optical
not vestibulospinal because the body is more upright
what reflexes are being used?
primarily using optical followed by labryithrine
less vestibulospinal because its slower and hasnt kicked on yet
Which reflex
vestibulospinal (helps maintain contronl)
Which motor control theroy best supports the control of head writing?
Both
AS you get older where you focus your attention on gait changes
* you need less focus on the actual walking / gait and can do other things like talking
* More peripheral vision is used (can turn head and walk and not even think about the walking / environment because shes using her peripheral vision)
where in the brain does encoding of muscle forces and/or trajectory during the performance of a task happen?
* makes sure right forces are generated at the right time so we can get where we want to go
Primary motor cortex
What are of the brain gives you bimanual (think bilatearl) coordination and complex synergistic movements?
Supplementary motor cortex/area
You need bilatearl coordination to walk
what area of the brain gives us orientation of the body and extremity towards a taget / proximal stability?
* voluntary tasks “I want to go this way” - going to help us orient that direction
Premotor cortex
relay station of the brain
thalamus
What area of the brain pulls in information from the cerebellum / basal ganglia / sensory system –> puts it all together and directs the output towards primary motor cortex / supplementaroy motor area / primary motor cortex
thalamus
Is the basal ganglia conneted to the motor cortex?
No, its an indirect connection (goes through the thalamus)
Which part of the brain modulates the strength of the singnals that go up to the cortex through the thalamus?
basal ganglia
Is the cerebellum directly connected to the cortex?
No, connected through thalamus
Which part of the brain helps w/ muscle synergies?
cerebellum
which part of the brain is used to correct movement errors?
cerebellum
* for young people this isnt developed yet so it isnt very developed
Which part of the brain helps you regulate mvoement?
* does this by identifying spatial relationships of a movement in an environment
* orients the body in the environment and the limbs to the body
Posterior Parietal Cortex
Posterior Pariet Cortex takes infromation from what 3 places
1) visual cortex
2) temporal lobe
3) and lots of other sensory areas
helps us determine how the body should be regulated in terms of the movement in the environment
* takes in lots of sensory inputs and pulls them together and helps to regulate the output assoiated w/ the motor areas of the brain
