Chapter 4 Sensory Contributions to Skilled Performances Flashcards
What are the sources of sensory information related to skilled movement performance?
The sources include exteroception, proprioception, and interoception.
What is exteroception?
Exteroception refers to sensory information from external sources, such as vision and hearing.
What is proprioception?
Proprioception is the sense of body position and movement, providing feedback from muscles and joints.
What is interoception?
Interoception is the sense of internal body states, such as hunger and heart rate.
How do exteroception, proprioception, and interoception contribute to movement control?
They provide essential feedback for adjusting and refining movements.
What sensory information is relevant for elite vs novice golf swings?
Elite golfers rely on refined proprioceptive feedback, while novices may depend more on visual cues.
What sensory information is relevant when going down stairs with and without vision?
Without vision, proprioception becomes crucial for balance and spatial awareness.
What sensory information is relevant for a wide receiver catching a long pass?
Exteroceptive feedback from vision is critical for tracking the ball’s trajectory.
What are the distinct parts of a closed loop control system?
The parts include the executive, effector system, comparator, and error signal.
How do the stages of information processing interact with closed loop control?
They interact by continuously adjusting movements based on feedback received.
Why is it considered a ‘closed loop’?
It is termed ‘closed loop’ because the system uses feedback to modify actions in real-time.
What are the limitations of closed-loop control in explaining movement?
It may not adequately account for rapid or reflexive movements that occur without conscious processing.
How do reflexes contribute to closed loop control?
Reflexes provide immediate responses to stimuli, enhancing movement stability.
What are M1 and M2 reflexes?
M1 is a monosynaptic reflex, while M2 is a polysynaptic reflex; M2 is generally more functional.
Which sensory organ is mainly responsible for M1 and M2 in the book holding experiment?
The muscle spindle is primarily responsible for M1 and M2 reflexes.
How does the recruitment of motor units relate to M2 reflexive mechanisms?
Recruitment of motor units is essential for generating the appropriate force during reflexive actions.
What is the difference between ventral and dorsal vision?
Ventral vision is responsible for object recognition, while dorsal vision is involved in spatial awareness and movement control.
How do ventral and dorsal vision contribute to the control of movement?
Ventral vision provides detailed feedback for identifying objects, while dorsal vision aids in guiding movements.
What is the purpose of the 1st component of the closed-loop control (executive)
To make decisions about the desired state or corrective actions
What is does the 2nd component of the closed-loop control do? (effector system)
It is used for carrying out the decisions
What does the 3rd component of the closed-loop control do? (comparator)
Compares anticipated feedback to actual feedback to define an error
What does the last component of the closed-loop control do? (error signal)
It is a signal that the EXECUTIVE receives
