Motor control quiz 5
137 flashcards · Other · by Sarah DenHerder
What happens during the pre locomotor stage
cephalocaudal development, proximodistal development
what is cephalocaudal development
from head to tail, babies move head first and then chest and so on down the body
what is proximodistal development
development moves from trunk to arms and legs, proximal to distal
What happens in the locomotor stage
Child goes from being top heavy, needing to hold on to things to walk (around 9 months), to walking and kicking a ball or walking backwards
What are the general milestones during the first year
lift head, roll over, sit without support, stand with support, pull up to stand, walk with support, stand alone, walk alone,
lift head
milestone in the first year, before 1 month
roll over
milestone in the first year, 2-5 months
sit without support
milestone in the first year, 4-8 months
stand with support
milestone in the first year, 5-10 months
pull up to stand
milestone in the first year, 6-10 months
walk with support
milestone in the first year, 7-13 months
stand alone
milestone in the first year, 10-14 months
walk alone
milestone in the first year, 11-14 months
Is motor skill development the same for all babies
no
12-15 months
some fine motor skills pincer grasp, points with forefinger, rock to rhythm, stoop and pick things up
15-18 months
takes covers off, throws a ball, climb on things
18-21 months
stairs with help, roll a ball, feed themselves, start helping dress
21-24 months
kick a ball, walk upstiars without help, marks time (goes up one step at a time, puts both feet on a step and then goes up again), stand on tiptoes, jump
In years 2-6 movement skills transition to
abilities
How does handwriting grip change in years 2-6
Cylindrical grasp: 1-1.5 years digital grasp: 2-3 years modified tripod grasp: 3.5-4 years Tripod grasp: 4.5-7 years
Year 2
Gross motor: jumps forwards, backwards and sideways, can jump about 2 inches high, jump down from 8 inch height, walk on tiptoes, stand on one foot for 1 second, 2-3 steps on a balance beam, hop on one foot, runs, stairs with alternating feet, climbs, catches ball wth straight arms, ball skills improve Fine motor: build tower up to 8 blocks, build a simple bridge, hold a crayon with thumb and fingers, put rings on a ring stacker, paint with a brush, use scissors and make one snip, squeeze blue…
Year 3
Gross motor: can jump about 8 inches high, broad jump, jump down from 16 inch height, jump rope for two cycles, stand on one foot for 5 seconds, gallops, downstairs by marking, throwing overhand, begins to catch with arms bent, riding a tricycle Fine motor: build tower up to ten blocks, string beads, hand dominance is notable, copies a circle cross and square, writes a few lettes (name), continuous cut with scissors in a straight line, can dress but may need help
Year 4
Gross motor: broad jump two feet, jump down from two feet with feet togeter for take off and landing, down stairs wih alternating feet, ridin ga bike with training wheels Fine motor: draws a person with a head and 1-2 features, tripod grip for writing, writes more letters and numbers, cut out shapes with scissors, zips own coat, help getting gloves on, can dress independently
Years 5-6
Gross motor: Begin to loose fat and gain muscle, somersaults, swing and climb, skip, runs with agility (changes direction), jumps rope, swims, rides bike (wiithout training wheels), can start playing sports, but need help understanding the rules Fine motor: starts tying shoes, buttons, begins writing full sentences, detailed drawing, complete own self-care tasks (brushing teeth, combing hair), independently feed themselves
Catching
goes from straight to bent arms
throwing
progressing with more trunk rotation
cutting
snips to around shapes
running
from short steps to long steps, and from no arms swing to arm swing
Years 7+ how does motor skill development continue
have all of the gross motor skills by this point develop specific skills put multiple movements together continues to refine sport specific skill until young adults
How does strength change with age
maximal muscle strength and muscular power is achieved in 20s or 30s and then declines slow decline after 30 and then faster decline after 60
Causes of coordination difficulties with aging
loss of sensory receptros and decreases in movement time
What causes and increases potential to fall with aging
loss of sensory receptors, loss of hair cells in vestibular system, loss of strength, and increased reaction times leads to balance problems and increased potential to fall
How can declines be prevented/delayed
exercise, strength training in particular, active engagement in the environment, engaging in activities that challenge movement speed and reaction time, if you don't use it you lose it
What are the 3 stages of learning in the Fitts and Posner model
cognitive, associative, autonomous This is a continuum of practice, and the more practice leads to gradual changes
Cognitive stage (Fitts and Posner model)
Beginner focused on solving cognitively-oriented problems, large error, highly variable, don't know what to do to improve
associative stage (Fitts and Posner model)
The person has learned to associate cues from the environment with required movements to achieve the goal of the skill, less error, less variability, can detect and identify their own performance errors, know what they did wrong
autonomous stage (Fitts and Posner model)
skill is automatic, can detect errors and correct
What stage do skills require conscious thought
cognitive and associative
what stage should a teacher help identify errors
cognitive
what stage does variability decrease
associative
what stage is performance consistent
autonomous
Two stages of learning in gentiles model
initial stage and later stage
initial stage (gentiles model)
Learner achieves 2 goals acquire movement coordination pattern discriminate between regulatory and nonregulatory conditions explores a variety of movement, problem solves through trial and error, develop a movement coordination patter, not consistent or efficient
regulatory conditions
conditions in the environment that determine movement characteristics
nonregulatory conditions
conditions in the environement that don't influence movement
later stage (gentiles model)
Learner acquires 3 characterstics adaptation: hav movement pattern for skill and can adapt to different environments and conditions consistency economy of effort: doesn't take as much energy or effort to complete the task
closed skill
environment is stable
open skill
environment is in motion
How are closed skills modified in the later stages
closed skills require a fixation of movment pattern
fixation
refines initial stage movement pattern to consistently repeat optimal movement pattern, because environment isn't changing, used for closed skills
how are open skills modified in later stages
open skills require diversificaion of movement pattern
diversification
refines initial stage movement pattern to enable adaption to changing environmental conditions, continually changing spatial and temporal regulatory conditionsof the skill, where and how fast, used for open skills learners acquire theh capability to modify the movement pattern according to environmental context characteristics
invariant features
do not change from one performance to another
parameters
vary from one performance to another
modification of closed skills
only movement parameter changes
modification of open skills
changes to either parameters and/or invariant features, must adapt/anticipate to changes in regulatory condition
what to focus on to identify stage of learning
consistency of performance, ability to detect and change errors, ability to adapt
Rate of improvement
Initial stage large, quick amount of improvement Later stage amount of improvement decreases, already good so less gain to be had
movement coordination
initial stage hold some joints rigid, freeze degrees of freedom Later stage uses more degrees of freedom
coordination pattern
initial stage old coordination pattern, can cause injury, knee, hip, back issues Later stage new coordination pattern, healthier to prevent injury or reduce pain
muscles used
initial stage use more muscles and inaccurate timing later stage use less muscles and accurate timing
energy cost
initial stage expend lots of energy later stage minimal energy cost
visual selective attention
initial stage looks at too many things later stage attends to most useful features
attention demands
initial stage requires conscious thought later stage is automatic
error detection
initial stage unable to detect erros later stage rapidly and efficiently correct errors
brain activity
initial stage multiple brain areas used, controlled processing - cerebellar/PMA, externally generated later stage less brain areas used, automatic processing - basal ganglia/SMA, internally generated
What characteristics don't change with the stages of learning
visual/sensory feedback, because you learn what feedback you need and continuously use it, continue to need this feedback even after become more skillful with additional practice, performance is less optimal if sensory information does not match with what is stored in memory
what is an expert
extreme opposite end of learning stages from beginner, deliberate practice for at least 10 years
characteristics of an expert
knowledge structure that is oragnized, know how to use different feedback and structured movement, better able to interrelate the concepts, know what to watch, what to look for et, knowledge structrure is activity specific, just because good at basketball doesn't mean good at tennis can make quick decisions in a short amount of time select meaningful information in a short amount of time, what information from environment do you need
movment ability
novice more errors and inconsistency expert more automatic and efficient
perception
novice difficulty extracting relevant sensory information, more time in visual search expert interpret sensory information rapidly, less time in visual search
cognition
novice more problem solving, more reacting, attention on object expert more organized information for memory recall, recognizes patterns and anticiptes, attention away from object and on envrionment
What is performance
The behavioral act of executing a skill at a speceific time and in a specific situation
What is learning
relatively permanent change in capacity to perform as a result of practice
what defines motor learning
relatively permanent, result of practice, inferred from performance
Characteristics of skill learning
imporvement, consistency, stability, persistence, adaptability
Improvement
Characteristics of skill learning, higher skill level than sometime before
consistency
charcteristic of skill learnin, less variable with learning, performance becomes increasingly similar, most variable at the beginning of learning
stability
characteristic of skill learning, internal or external conditions that do not disrupt perforamance, internal could be anxiety or drowsiness, external could be people around
persistence
characteristic of skill learning, improvement that lasts over a period of time
adaptability
characteristic of skill learning, adaptable over a varietty of conditions, applied to a variety of performance context characteristics
What defines learning in coordination dynamics
learning a new skill represents evolving a new spatial and temporal coordination pattern from an old one
What aspects of the coordination pattern are important for determining the coordination state
stability and consistency, can help with old, transition, or new coordination pattern
How do you determine if someonee has learned
Retention tests, transfer tests, and other types of tests: criterion for master, level or automaticity, pre and post tests
What is a retention test and what does it measure
wait a period of time and then test, measures persistence across time
what is a transfer testa nd what does it measure
novel situation is tested skill in a new context (Stress and feedback) skill in a new environment perform a different/related skill assesses adaptability and generalizabiilty can be better for a clinical/exercise setting
Criterion for mastery
how many trials (minutes, hours, etc) to reach criterion, set a level you want to get to or want patient to get to
level or automaticity
controlled vs automatic processing
pre and post tests
tests are identical but practice is different, easy for group analysis, can't observe performance change over timee doesn't tell much about what happened in the middle
Having a person walk and talk outside
transfer test
set a target distance
criterion for mastery
doing the same 10 meter walk at the beginning and end
pre and post test
Types of performance curves
linear, negatively accelerated, positively accelerated, s shaped
linear
proportional improvement over trials or time, same amount of improvement each time, straight line
negatively accelerated
early improvement but slows during later practice, sharp curve at beginning and then plateaus,
positively accelerated
slight improvement early but substantial improvement during later practice, plateau and then sharp increase
s shaped/ogive
combination of negatively and positively accelerated, not much improvement at the beginning, a lot of improvement in the middle and then a plateau
advantages to perforamance curves
can see acutal performance, indicate progression of learning stages
disadvantages to performance curves
incorrect inerpretation ceiling effect (task was to easy, high score that stays high) floor effects (task was too hard and never see an improvement) plateaus, learn a lot and then no improvment some kinematic variables are difficult to present in performance curves so block trials
what is the formula for calculating percent change
[(B-A)/A] x 100, A = earlier performance B = later performance