L10A: Generalized Motor Programs Flashcards
b) Organized once the movement gets underway
c) It looks like EMG on non-blocked trials
Point of No Return
Fill in the Blank
Motor programs are pretty much
synonymous with _______ control
open loop
In reality… most movements involve both open and closed-loop processes, why would we ignore feedback if we have it (& can use it)?
What are the pros of
motor programs?
What are the cons of
motor programs?
- STORAGE PROBLEM
- NOVELTY PROBLEM
What is the STORAGE PROBLEM?
How many throwing-related motor programs would we need to store in LTM, as an in-field baseball player?
It is a burden on long term memory
What is the NOVELTY PROBLEM?
How do we make new throws when we’re standing at an unpractised distance, or the ball is new/heavier/lighter?
Solution to the cons/problems of only having specific motor programs
Solution to the cons/problems of only having specific
motor programs is Generalized Motor Program
What are Generalized Motor Programs?
GMP = Memory for class of actions which are modified or tuned based on desired outcome
What are two components of GMP?
- Invariant features
- Parameters
What are Invariant features?
- Invariant features:
Fixed features that define the Motor Program
Primarily solves storage problem
GMP
What are Parameters?
- Parameters:
Flexible features that define how the Motor Program will be executed
Primarily solves novelty problem
Parameters
How would this action selection and adjustment
of parameters work in a simplified model?
An example to help illustrate that
GMPs might exist
WRITE YOUR SIGNATURE 5 TIMES:
1. Use your dominant hand
2. Use your non-dominant hand
3. Grip the pen in a fist hold
4. Write slowly but maintain legibility
5. Press down hard
How can GMP be identified?
GMP can be identified by its invariant (fixed) features (like fingerprints)
Forms the basis of what is stored in memory
(relatively) consistent from one performance of an action
to another
