Proprioception & Reflexes
Which proprioceptor detects muscle length and rate of stretch?
Muscle spindle
Sensory integration is the process of doing what?
Filtering and encoding multiple sources of sensory information
Which three sensory systems contribute most to postural control?
Vision, vestibular, and somatosensory systems
Muscle tone is defined as what?
The force with which the muscle resists lengthening (stiffness)
Procedural memory helps you remember…
How to do a skill automatically
Why does swaying at the ankle help balance?
It gives richer sensory feedback (proprioceptive)
What reflex causes a muscle to relax when tension becomes too high?
Autogenic inhibition (GTO)
What two things does sensory integration help “couple”?
Incoming sensory info + outgoing motor actions
Preparing the body for an expected disturbance is called what type of control?
Proactive (predictive)
Why does postural sway occur?
To maintain balance via continuous sensory feedback
What does “encoding” mean in memory?
Giving information meaning/context to label it
Moving your fingers on a surface improves what kind of feedback?
Touch/texture discrimination
Which sensation does NOT come from within the body?
Any type of sensation form an exteroceptor
Which brain area compares predicted vs. actual movement?
Cerebellum
What are the goals of postural control?
Stability + biomechanical alignment
Low tone = more or less resistance to stretch?
Less resistance (more compliant)
Switching focus from one stimulus to another is called what?
Attention switching
Using movement to enhance sensory information is one of the two key functions of what?
Sensory integration