motor control Flashcards
1
Q
brodmann area 4
A
primary motor cortex
located in precentral gyrus
2
Q
DISEASE: Gille’s de la Tourette’s syndrome
A
basal ganglia prevented from inhibiting muscles
twitching
3
Q
what does the basal ganglia consist of?
A
- caudate nucleus
- putamen
- substantia nigra
- subthalamic nuclei
4
Q
DEFINE: proprioception
A
knowing orientation of limbs in space without visual information
5
Q
what are the types of afferents in muscle fibres?
A
type Ia afferents
type II afferents
6
Q
what is the effect of adding 5HT to γ motor neuron?
A
- γ motor neuron fires more rapidly
- intrafusal fibres stiffer
- transmits more information to sensory cortex (any little movement will be transmitted to other side)
7
Q
what is the effect of adding NA to γ motor neuron?
A
- γ motor neuron firing rate decreases
- intrafusal fibres more elastic - more tension
- transmits less information to sensory cortex
