Motor Behavior Test Flashcards
Open Loop Control System
‘no feedback control’; hierarchical model; pre-planning; control center provides all the information for effectors to carry out movement
Closed Loop Control System
‘continuous control’; heterarchical model; uses feedback; control center issues information to effectors sufficient only to initiate movement (relies on feedback to continue and terminate movement)
Synergies
ensembles or groupings of muscles and limbs that work together as a functional unit
Motor Program-Based Theory
memory based mechanism that controls coordinated movements; “schema theory”; proposed that each generalized motor program controls a class of actions that have common invariant characteristics
Generalized Motor Program
hypothesized memory-based mechanism responsible for adaptive and flexible qualities of human movement; serves as a basis for generating instructions prior to and during the task
Invariant Features
characteristics that DO NOT VARY across performances of a skill within class of actions; identifying signature of a GMP; time of the components of action
Parameters
specific features added to invariant features to enable the performance of a skill in a specific situation; can vary from one performance to another
Dynamic Pattern Theory (DPT)
describes and explains coordinated movement control by emphasizing the role of information in the environment and mechanical properties of the body and limb; concerned with identifying laws that govern changes in human coordination;
Non-Linear Dynamics
(DPT) dynamic pattern theory idea that the motor control system operates on this basis; states that behavioral changes are not always continuous; states that behaviors are specified by environmental and task conditions
Attractor State
(DPT) a stable state of the motor control system that leads to behavior according to preferred coordination patterns; deeper the well, the easier it is to perform the task
Order Parameters
(DPT) functional, specific, and abstract variables that define the overall behavior of the system
Control Parameters
(DPT) variable that is manipulated in a control system; provides the basis for determining attractor states for patterns of limb movement
Stability
(DPT) retains present state despite perturbation
Self-Organization
(DPT) when certain conditions characterize a situation, a specific pattern of limb movement emerges;
Coordinative Structures
(DPT)functional synergies of muscles and joints that act cooperatively to produce an action