Motor Development and Performance Factors
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Questions and Answers

What is motor development?

Motor development is the study of change in growth, development, and motor performance across the lifespan, noting similarities between babies and older adults.

List two major factors that influence motor performance.

Heredity and maturation are two major factors that influence motor performance.

What are the first two steps in the sequence of brain and CNS development?

The first two steps are cell proliferation, which generates immature neurons, and migration, where neurons move to different sites in the brain.

Describe the cephalo-caudal principle in development.

<p>The cephalo-caudal principle refers to growth that progresses from the head to the toe.</p> Signup and view all the answers

What does the term 'phylogenetic' refer to in motor skills?

<p>Phylogenetic refers to skills or behaviors that are naturally acquired and related to the species of man, such as crawling.</p> Signup and view all the answers

What distinguishes ontogenetic skills from phylogenetic skills? Give an example.

<p>Ontogenetic skills are learned and depend on the individual, such as dancing, while phylogenetic skills are naturally acquired.</p> Signup and view all the answers

What happens to infant reflexes as they develop?

<p>Infant reflexes are suppressed as the child matures.</p> Signup and view all the answers

List three categories of reflexes.

<p>The three categories of reflexes are primitive, postural, and locomotor.</p> Signup and view all the answers

Explain the difference between creeping and crawling.

<p>Crawling involves dragging the body while creeping refers to moving on all fours, with creeping typically developing first.</p> Signup and view all the answers

What percentage of physical functioning does the average adult lose between ages 30-70?

<p>The average adult loses about 30% of physical functioning between ages 30-70.</p> Signup and view all the answers

What role does myelination play in the development of the brain and CNS?

<p>Myelination facilitates faster transmission of neural signals and enhances the efficiency of neural pathways.</p> Signup and view all the answers

Describe the importance of integrating neural groups during brain development.

<p>Integration allows different neural groups to communicate and coordinate, essential for complex motor skills and behaviors.</p> Signup and view all the answers

How does the proximal-distal principle influence motor skill development in children?

<p>The proximal-distal principle indicates that motor control develops from the center of the body toward the extremities, allowing greater control of larger muscle groups before fine motor skills.</p> Signup and view all the answers

Why are reflexes considered a significant diagnostic tool in infants?

<p>Reflexes help assess the neurological development and functioning of an infant's nervous system.</p> Signup and view all the answers

How do voluntary movements differ from reflexes in terms of control and purpose?

<p>Voluntary movements are consciously controlled and purposeful, whereas reflexes are involuntary responses to stimuli.</p> Signup and view all the answers

What characterizes the four developmental stages of prehension?

<p>The stages are characterized by increasing complexity and dexterity in hand movements, starting from a simple grasp to fine manipulation.</p> Signup and view all the answers

In what ways do growth and experience influence motor performance throughout life?

<p>Growth provides the physical capability for skill acquisition, while experience enhances learning and refinement of those motor skills.</p> Signup and view all the answers

Explain the developmental significance of cell necrosis in the brain.

<p>Cell necrosis is essential for removing excess neurons that are not functionally connected, paving the way for more efficient neural networks.</p> Signup and view all the answers

What distinguishes spontaneous movements from reflexes in infants?

<p>Spontaneous movements are voluntary and exploratory, while reflexes are automatic responses to specific stimuli.</p> Signup and view all the answers

Describe how crawling and creeping progress in the development of locomotion.

<p>Crawling typically involves dragging the body, while creeping is performed on all fours, showing a progression towards greater coordination and control.</p> Signup and view all the answers

Study Notes

Motor Development

  • Study of changes in growth, development, and motor performance across the lifespan
  • Focus on similarities between infants and older adults

Factors Influencing Motor Performance

  • Heredity (genetic predisposition)
  • Maturation (biological growth and development)
  • Experience (practice and learning)
  • Growth (physical changes)

Brain and CNS Development

  • Cell proliferation: Generation of immature neurons
  • Migration: Movement of neurons to specific locations in the brain
  • Integration: Formation of connections between neural groups
  • Differentiation: Progression of neural control
  • Myelination: Covering of neural pathways with myelin, improving signal transmission
  • Cell necrosis: Death of cells

Growth and Control Sequences

  • Cephalo-caudal: Growth proceeds from head to toe
  • Proximal-distal: Growth proceeds from the center of the body outwards

Skill Types

  • Phylogenetic: Species-specific, naturally acquired. Example: Crawling
  • Ontogenetic: Learned, individual-specific. Example: Dancing

Reflexes

  • Involuntary response to a stimulus
  • Suppressed during development
  • Diagnostic tool for neurodevelopment
  • Essential for survival

Reflex Categories

  • Primitive (basic reflexes)
  • Postural (related to body position and balance)
  • Locomotor (related to movement)

Spontaneous Movements

  • Involuntary movements that occur without external stimuli
  • Help to develop motor control

Creeping vs. Crawling

  • Crawling: Body drag
  • Creeping: All fours
  • Creeping develops before crawling

Prehension Development (Manual Control)

  • Palmer grasp: Using the whole hand to grasp objects
  • Pseudo opposition: Using thumb and fingers in a crude opposition
  • Thumb opposition: Fine motor control with thumb and fingers
  • Mastery: Skilled and coordinated use of the hand

Locomotion Development

  • Crawling
  • Creeping
  • Walking
  • Running
  • Leaping
  • Jumping
  • Hopping
  • Galloping
  • Sliding

Peak Performance

  • Skills requiring fast reflexes: Peak performance usually around 20s
  • Skills requiring strength: Peak performance usually around 40s

Decline in Physical Functioning

  • Average adult loses significant physical function between ages 30-70

Motor Development

  • Study of changes in growth, development, and motor performance throughout life
  • Includes similarities between babies and older adults

Factors Influencing Motor Performance

  • Heredity
  • Maturation
  • Development
  • Experience
  • Growth

Brain and CNS Development

  • Cell Proliferation: Generating immature neurons
  • Migration: Movement of neurons to different locations in the brain
  • Integration: Interaction of neural groups
  • Differentiation: Progression of control within the brain
  • Myelination: Coating of neural pathways to improve transmission speed
  • Cell Necrosis: Death of cells

Growth and Control Sequences

  • Cephalo-caudal: Growth progresses from head to toe
  • Proximal-distal: Growth progresses from the midline of the body to the periphery

Phylogenetic Skills

  • Naturally acquired skills specific to the human species
  • Example: crawling

Ontogenetic Skills

  • Learned skills that depend on individual experience
  • Example: dancing

Reflexes

  • Involuntary responses to stimuli
  • Suppressed in infancy
  • Important for diagnosis and survival

Reflex Categories

  • Primitive reflexes
  • Postural reflexes
  • Locomotor reflexes

Spontaneous Movements

  • Unintentional movements that appear in infancy

Creeping vs. Crawling

  • Crawling involves dragging the body, while creeping involves all fours
  • Creeping precedes crawling

Stages of Prehension (Manual Control)

  • Palmer grasp: Using the whole hand to grasp an object
  • Pseudo opposition: Using the thumb and fingers to grasp an object, but not fully opposing
  • Thumb opposition: Using the thumb and fingers in a fully opposing manner to grasp an object
  • Mastery: Skilled manipulation and control of objects

Locomotion Development Sequence

  • Crawling
  • Creeping
  • Walking
  • Running
  • Leaping
  • Jumping
  • Hopping
  • Galloping
  • Sliding

Peak Performance Age

  • Skills requiring fast reflexes: Peak performance in the 20s
  • Skills requiring strength: Peak performance in the 40s

Adult Physical Functioning Decline

  • Average adults lose a portion of their physical functioning between the ages of 30 and 70

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Description

Explore the intricate changes in motor development throughout the lifespan, focusing on aspects like heredity, maturation, and experience. This quiz also delves into critical brain and CNS development stages and the sequences of growth and control. Test your knowledge on how these factors influence motor performance in individuals from infants to older adults.

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