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Overview of Motor Control

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Lecture 1: Overview of Motor Control What is Motor Control? The big picture... Motor Behavior An area of study stressing primarily the principles of human skilled ... – PowerPoint PPT presentation

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Date added: 25 July 2019
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Title: Overview of Motor Control


1
Lecture 1
  • Overview of Motor Control

2
What is Motor Control?
3
The big picture...
4
Motor Behavior
  • An area of study stressing primarily the
    principles of human skilled movement generated at
    a behavioral level of analysis.

5
Motor Behavior
  • Action
  • Perception
  • Cognition
  • Interaction of individual, task and environment.

6
Motor Control
  • An area of study dealing with the understanding
    of the neural, physiological and behavioral
    aspects of movements.

7
Two main aspects of motor control
  • Stabilizing the body in space, postural and
    balance control.
  • Moving the body in space, movement.

8
Motor Learning
  • A set of internal processes associated with
    practice or experience leading to relatively
    permanent changes in the capability of motor
    skill.

9
Motor Development
  • A field of study concerning the changes in motor
    bahavior occuring as a result of growth,
    maturation and experience.

10
Task
Individual
Motor control
Environment
11
Why should we study motor control?
  • Improving movement capability following injury to
    guide clinical intervention.
  • Improving motor performance.
  • Generating and building theory.

12
Theory vs. Model in Motor Control
  • A theory of motor control is a group of abstract
    ideas about the nature and cause of movement.
  • A model is a represetation of something, usually
    a simplified version of the real thing.

13
Theories of Motor Control
14
Reflex theory
  • The building blocks of complex behavior.
  • Sir Charles Sherrington, neurophisiologist (The
    Integrative Action of the Nervous System), 1906.
  • Classified the major responses to stimuli, and
    believed that most of the voluntary movements
    resulted from these fundamental reflexes.

15
  • Stimulus Response Response
  • Sensory receptor Effector(muscle)

16
Information processing model
  • Input
  • (Signals)
  • Processing
  • (The human)
  • Output
  • (Motor response)

17
Information processing model
  • Stimulus Stimulus Response Response
    Movement
  • (Input) iden. selection progra.
    output
  • REACTION TIME
  • THE HUMAN

18
Hierarchical Theory
  • Top - down structure
  • Reflexes are part of this hierarchy, normally
    higher centers inhibit them
  • (Chart to be scanned)
  • Motor control emerges from reflexes, later on
    integrated with higher control levels.
  • Limitations

19
Motor programming theories
  • Sensory input not essential to drive movement but
    important function in modulating it.
  • Try for yourself (signature) demo.
  • Limitations

20
Dynamical Systems theory
  • Bernstein-characteristics of acting systems,
    external and internal forces.
  • Distributed model of motor control-no need for
    higher center of control.
  • Interaction of elements, physical and neural
    components.
  • Limitations

21
(No Transcript)
22
  • Parallel distributed processing theory.
  • NS processes information in serial and parallel.
  • Limitations

23
Task oriented theories
  • Control of movement is organized around
    goal-directed functional behaviors such as
    walking or talking.
  • Limitations

24
Ecological theory.
  • How do we detect information in our environment
    that is important to our actions?
  • Limitations
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