Lecture 25 - Adapting Discrete Movements Flashcards
What is the definition of motor learning?
a set of processes associated with practice or experience that causes relatively permanent gains in the capability for skilled performance
When we measure motor adaption using visuomotor adaptation, what is the size of the errors proportional too?
Size of the rotation
What does visuomotor adaptation involve?
changes in the planned reach path using errors experienced in previous trials
What regions of the brain do we see changes to rCBF in during VMR adaptation?
Posterior parietal cortex
- supramarginal gyrus (SMG)
- superior parietal lobe (SPL)
- pre-frontal cortex (PFC)
- posterior lobe of cerebellum
Does cerebellar damage increase or decrease learning?
decrease
What is the cerebellum important for in terms of learning?
It is responsible for changes and error
What occurs when chicken bird wears prism goggles, in terms of visual and auditory processing?
prism goggles create conflict between audition and vision, audition realigns with vision after wearing goggles for a while, when goggles are removed they become temporarily misaligned again
What happens to perceived position of the limb when adapting to prism?
it gets altered
Unperturbed hand paths in the robot are…
smooth and relatively straight
Adapting reaching movements for novel forces
What is the most commonly used force environment?
Velocity-depedant and perpendicular to the direction of hand motion
Adapting reaching movements for novel forces
What are the important sensory systems that provide the nervous system with error feedback?
- muslce spindles
- GTO
- visual info
Can adaptation be generalized when it is performed under one specific condition?
No, it is local and specific to practice conditions
Adapting reaching movements for novel forces
What does adaptation decay as a function of?
the spatial difference between the practice/training movements and generlization targets
Can motor adaptation be increased by observing someone correctly perform that same movement?
Yes
