1g Motor 1&2 Motor Cortex 1 Flashcards
What area is the Primary Motor “Strip”
area 4
What does the Primary Motor Strip control
simple muscle movement (low threshrold)
What type of neurons are mainly found in Area 4
Corticospinal Neurons
How does damage to area 4 present?
strong paresis without apraxia (inability to sequence/signal movements)
What area is the Pre-Motor Cortex?
Lateral Area 6
What type of neurons are in Lateral Area 6
Cortospinal Neurons
What type of movement does the Pre-Motor Cortex create?
sequential - emphasizes proximal musculature over distal
How does damage to lateral area 6 present?
apraxia involving bimanual (hand) coordination (don’t lose any strength, but have difficulty sequencing movements)
What area is the Supplementary Motor Cortex
medial area 6
what type of movement does medial area 6 elicit?
sequential - neurons respond to a certain sequence of movements
what neurons are located in supplementary motor cortex?
corticospinal neurons
how does damage to medial area 6 present?
apraxia (inability to sequence movements)
What is Broca’s Apraxia?
person can make phonetics of speech but cannot string the sounds together to produce a word
