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Motor Learning
Chapters 1-4
70
Biology
Undergraduate 3
02/12/2010

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Term
Motor Skill
Definition
activities or tasks that require voluntary head, body, and/or limb movement to achieve a goal.
Term
Motor Learning
Definition
The study of the acquisition of motor skills, the performance enhancement of learned or highly experienced motor skills, or the reacquisition of skills that are difficult to perform or cannot be performed because of injury, disease, and the like. Of interest are the behavioral and/or neurological changes that occur as a person learns a motor skill and the variables that influence those changes.
Term
Motor Control
Definition
the study of how our neuromuscular system functions to activate and coordinate the muscles and limbs involved in the performance of a motor skill. Researchers may investigate this question while a person is learning a new skill or performing a well-learned or highly experienced skill.
Term
Motor Development
Definition
the study of human development from infancy to old age with specific interest in issues related to either motor learning or motor control.
Term
Skill
Definition
A. an activity or task that has a specific purpose or goal to acheive;
B. an indicator of quality of performance.
Term
Actions
Definition
term used synonymously with 'motor skills'
Term
Movement
Definition
behavioral characteristics of specific limbs or a combination of limbs that are component parts of an action or motor skill.
Term
Gross Motor Skill
Definition
a motor skill that requires the use of large musculature to achieve the goal of the skill.
Term
Fine motor skill
Definition
a motor skill that requires control of small muscles to achieve the goal of the skill; typically involves eye-hand coordination and requires a high degree of precision of hand and finger movement.
Term
Discrete motor skill
Definition
a motor skill with clearly defined movement beginning and end points, usually requiring a simple movement such as flipping a light switch.
Term
Continuous motor skill
Definition
a motor skill with arbitrary movement beginning and end points. These skills usually involve repetitive movements.
Term
Serial Motor Skill
Definition
a motor skill involving a series of discrete skills.
Term
Environmental Context
Definition
the supporting surface, objects, and/or other people involved in the environment in which a skill is performed.
Term
Closed motor skill
Definition
a motor skill performed in a stationary environment where the performer determines when to begin the action.
Term
Taxonomy
Definition
a classification system organized according to relationships among the component characteristics of the group of items or objects being classified
Term
regulatory conditions
Definition
characteristics of the environmental context that determine (i.e. regulate) the movement characteristics needed to perform an action.
Term
Intertrial variability
Definition
an environmental characteristic in Gentile's taxonomy of motor skills. The term refers to whether the regulatory conditions associated with the performance of a skill in one situation or for one trial are present or absent in the next situation or trial.
Term
Performance outcome measures
Definition
a category of motor skill performance measures that indicates the outcomes or result of performing a motor skill (e.g. how far a person walked, how fast a person ran a certain distance, or how many degrees a person flexed a knee)
Term
Performance production measures
Definition
a category of motor skill performance measures that indicates the performance of specific aspects of the motor control system during the performance of an action (e.g. limb kinematics, force, EEG, EMG, etc)
Term
Reaction time (RT)
Definition
the interval of time between the onset of a signal (stimulus) and the initiation of a response (e.g. the amount of time between the "go" signal for a swimming sprint race start and the beginning of the feet moving off the starting block).
Term
Movement Time (MT)
Definition
the interval of time between the initiation of a movement and the completion of the movement
Term
Response Time
Definition
the time interval involving both reaction time and movement time; that is, the time from the onset of a signal (stimulus) to the completion of a response.
Term
Simple RT
Definition
the reaction time when the situation involves only one signal (stimulus) that requires only one response.
Term
Choice RT
Definition
the reaction time when the situation involves more than one signal and each signal requires its own specified response.
Term
Discrimination RT
Definition
the reaction time when the situation involves more than one signal but only one response, which is to only one of the signals; the other signals require no response.
Term
Absolute Error (AE)
Definition
the unsigned derivation from the target or criterion, representing amount of error. A measure of the magnitude of an error without regard to the direction of the derivation.
Term
Constant Error (CE)
Definition
the signed (+/-) deviation from the target or criterion, it represents amount and direction of error and serves as a measure of performance bias.
Term
Variable Error (VE)
Definition
an error score representing the variability (or conversely, the consistency) of performance.
Term
Root Mean-Squared Error (RMSE)
Definition
an error measure used for continuous skills to indicate the amount of error between the performance curve produced and the criterion performance curve for a specific amount of time during which performance is sampled.
Term
Kinematics
Definition
the description of motion without regard to force or mass; it includes displacement, velocity; and acceleration.
Term
displacement
Definition
a kinematic measure describing changes in the spatial positions of a limb or joint during the time course of the movement.
Term
Velocity
Definition
a kinematic measure describing the rate of change of an object's position with respect to time. It is derived by dividing displacement by time (e.g. m/sec, km/hr.)
Term
Acceleration
Definition
a kinematic measure that describes change in velocity during movement
Term
Kinetics
Definition
the study of the role of force as a cause of motion
Term
Electromyography (EMG)
Definition
a measurement technique that records for the electrical activity of a muscle or group of muscles. It indicates the muscle activity.
Term
Electroencephalography (EEG)
Definition
records brain activity - is recorded as waves, which are identified on the basis of the speed of the rhythmic activity.
Term
fMRI
Definition
functional magnetic resonance imaging: brain scanning technique that assess changes in blood flow to certain areas of the brain.
Term
Relative Phase
Definition
ranges from 0 to 360 degrees, which indicates an in-phase relationship between the limb segments or limbs, to 180 degrees, which indicates an antiphase (or out of phase relationship)
Term
Ability
Definition
a general trait or capacity of an individual that is a determinant of a person's achievement potential for the performance of specific skills
Term
Motor Ability
Definition
an ability that is specifically related to the performance of a motor skill
Term
General Motor Ability hypothesis
Definition
a hypothesis that maintains that the many different motor abilities that exist in an individual are highly related and can be characterized in terms of a singular, global motor ability (false?)
Term
Specificity of Motor abilities hypothesis
Definition
a hypothesis that maintains that the many motor abilities in an individual are relatively independent.
Term
Static Balance
Definition
the ability to maintain postural stability on a stable surface or when not engaging in locomotor activities (standing while reading a book)
Term
Dynamic Balance
Definition
the ability to maintain postural stability on a moving surface or when engaging in locomotor activities (walking on a sidewalk)
Term
Visual Acuity
Definition
the ability to see clearly and precisely
Term
Visual Tracking
Definition
the ability to visually follow a moving object
Term
Eye-hand or eye-foot coordination
Definition
the ability to perform skills requiring vision and the precise use of hands or feet.
Term
Neuron
Definition
a nerve cell; the basic component of the nervous system.
Term
dendrites
Definition
extensions from a neuron's cell body that receive neural impulses from other neurons; a neuron may have none or as many as thousands of dendrites.
Term
Axons
Definition
also called nerve fibers; extensions from a neuron's cell body that transmit neural impulses to other neurons, structures in the CNS, or Muscles; a neuron has only one axon, although most axons branch into many branches.
Term
Sensory Neurons
Definition
also called afferent neurons; nerve cells that send neural impulses from the CNS to skeletal muscle fibers
Term
Motor Neurons
Definition
also called efferent neurons; nerve cells that send neural impulses to the CNS
Term
interneurons
Definition
specialized nerve cells that originate and terminate in the brain or spinal cord; they function between axons descending from the brain and synapse on motor neurons, and between the axons from sensory nerves and the spinal nerves ascending to the brain.
Term
cerebrum
Definition
a brain structure in the forebrain that consists of two halves, known as the right and left cerebral hemispheres
Term
cerebral cortex
Definition
the undulating, wrinkly, gray colored surface of the cerebrum; it is a thin tissue of nerve cell bodies (about 2-5 mm thick) called gray matter.
Term
Sensory Cortex
Definition
cerebral cortex area located posterior to the central sulcus; it includes several specific regions that receive sensory nerves specific to that type of information.
Term
Primary motor cortex
Definition
a cerebral cortex area located in the frontal lobe just anterior to the central sulcus; it contains motor neurons that send axons to specific skeletal muscles throughout the body.
Term
Premotor area
Definition
a cerebral cortex area located in the frontal lobe just anterior to the primary motor cortex
Term
Supplementary motor area (SMA)
Definition
a cerebral cortex area located on the medial surface of the frontal lobe adjacent to portions of the primary motor cortex.
Term
parietal lobe
Definition
an area of the cerebral cortex that plays an important role in the control of voluntary movement
Term
Basal ganglia
Definition
a subcortical collection of nuclei buried within the cerebral hemispheres; they play an important role in the planning and initiation and movement and the control of antagonist muscles during movement.
Term
Parkinson' disease
Definition
a basal ganlia disorder caused by the lack of production of the neurotransmitter dopamine. Characterized by BART: bradykinesis (slow movements), akinesia (low movement), Rigidity of the muscles, and tremors.
Term
Diencephalon
Definition
a component of the forebrain located between the cerebrum and the brainstem; it contains the thalamus and hypothalamus.
Term
cerebellum
Definition
a brain structure located behind the cerebral hemispheres and attached to the braistem; it is covered by the cerebellar cortex and is divided into two hemispheres; it plays a key role in the execution of smooth and accurate movements.
Term
Brainstem
Definition
a brain structure located directly under the cerebral hemispheres and connected to the spinal cord; it contains three areas that are significantly involved in motor control: the pons, medulla, and reticular formation
Term
limbic system
Definition
a group of brain structures consisting of parts of the frontal and temporal lobes of the cerebral cortex, the thalamus and hypothalamus and the nerve fibers that interconnect these parts and other CNS structures; it is involved in the learning of motor skills
Term
ascending tracts
Definition
sensory neural pathways in the spinal cord and brainstem that connect with the various sensory areas of the cerebral cortex and cerebellum.
Term
descending tracts
Definition
motor neural pathways that descend from the brain through the spinal cord
Term
motor unit
Definition
the alpha motor neuron and all the muscle fibers it innervates; it serves as the functional unit of motor control for the innervation of the muscles involved in movement.
Term
Motor Unit recruitment
Definition
the process of increasing the number of motor units needed to increase the number of muscle fibers active at any one time and thereby increase the amount of force the muscle can exert.
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