Flashcards in Reflex and Posture Deck (10):
Dynamics of body posture to prevent falling
Give examples of three strategies which help maintain posture
- Ankle strategy
- Hip strategy
- Stepping strategy
During normal quiet standing, which strategy is used to maintain balance?
In order to maintain balance, what must lie within the base of support?
A person's centre of gravity
Explain the reflex model of maintaining posture
The reflex model outlines that postural responses to perturbations arise by reflex pathways from sensory information
Explain the systems model of maintaining posture
The systems model describes that posture is maintained via postural strategies, available sensory information, prior experience and environmental context
State the four sensory components which help maintain balance
1. Somatosensory (skin receptors)
2. Proprioceptive (muscle spindles / golgi tendon)
3. Visual (eyes)
4. Vestibular (ear)
Describe the concept of the inverted pendulum
An inverted pendulum is a pendulum that has its center of mass above its pivot point
Define "Centre of mass"
Weighted average of centre of mass of each body segment in 3D space