Lecture 7b: Closed-Loop Motor Control (visual and unconscious) Flashcards
Conscious closed loop control (visual)
- consciously controlled adjustments based on sensory information (for successful execution)
- require selective attention
- involves information processing stages
- there is also another level that is nonconscious that does not require information processing stages
How long does it take to process visual info?
- vision condition known: participants know when visual feedback is available, so can plan to use it
vision processed in < 150 ms (potentially as early as ~100 ms) – similar to fastest simple RT
Can we make adjustments or feedback based corrections more quickly?
if conscious closed-loop information processing takes too long; there are other quicker closed-loop mechanisms that do not require attention
- non-conscious loops are important in maintaining balance
2 Types of Closed-Loop Control Systems
conscious closed loop control
- consciously controlled adjustments based on sensory information
- require selective attention
- involves information processing stages
- controlled, voluntary, not so rapid (delays>150ms)
reflexive (proprioceptive) closed loop control
- little or no conscious control
- does not require selective attention
- reflexive modulations during performance of a motor skill “low-level” (occur in spinal cord and brainstem)
- stereotyped, involuntary, rapid fashion