Lecture 1 - Intro to Motor Systems Flashcards
What are the three types of Motor behaviour? [3]
- Reflexive movements
- Rhythmic movements
- Voluntary movements
What are reflexive movements?
Involuntary coordinated patterns of muscle contraction and relaxation elicited by peripheral stimuli
What are rhythmic movements?
Patterns that include chewing, swallowing, and scratching
What are voluntary movements?
Initiated to accomplish a specific goal
Where do the circuits for rhythmic motor patterns lie?
The spinal cord and brainstem
True or False? Voluntary movement improve with practice.
True
What is feedback control?
- Nervous system monitors sensory information
- Uses this to act on the limb
What is feedforward control?
- Uses senses to detect anxiety or anticipation based on experience
How are feedback systems characterised?
By their gain (High/Low)
What is the main purpose of feedback systems?
To help maintain the position of out limbs
What does feedforward control depend on?
The ability of the nervous system to predict consequences of sensory events
How is motor control organised?
In hierarchically interconnected areas of the spinal cord, brain stem and forebrain
How is sensory information relating to movement processed?
By different systems but in parallel
What is the highest level of the motor control hierarchy?
The cortex
In addition to the brainstem and cortex name two other organs that help to regulate movement. [2]
- Cerebellum
- Basal Ganglia
