Midterm 1 Flashcards
Motor Control
The study of posture and movements and the mechanisms that underlie them
Closed loop system
Used to perform SLOW and precise movements
Open Loop System
Used in movements of short duration and/or well skilled
Deafferentation
Surgical technique that removes the sensory information of one or more limbs
Motor Equivalence
Ability to produce same movement with different muscle groups
Self-organization
The body can reorganize its system accordingly to what needs to be done
-NO CONTROL CENTER
Attractor states
Preferred patterns of behavior
Afforandances
Lawful properties of environment
Parameters
Used to quantify change in behavior in the “dynamical system”
Muscle response synergies / Coordinative structures
Constraining muscles and joints to function in a way that is appropriate for the action
Absolute Error
Total Error
Constant Error
-Amount and direction of error
Variable Error
- How variable their error is
- Less variable = More consistent
Reaction time
-Time from SIGNAL to INITIATION OF MOVEMENT
Premotor Time
-First wave in EMG signals
Motor Time
-1st wave in EMG signals and INITIATION OF MOVEMENT
Movement time
-Time between start of movement and completion of it
Variables that influence reaction time:
- Complexity of movement
- Accuracy required
- Amount of practice
Root mean squared error measures?
-Scoring tasks
Angle-to-angle
-Limb COORDINATION
Phase-Plane
-Limb CONTROL
Decussate
Pathways crossing midline opposite side within CNS
Kinesthesis
Sensations of movements
Mechanoreceptors
Sensory receptors that must be physically deformed to fire
