Motor Cortex Flashcards
what is the main function of the motor cortex
planning and executing voluntary movement
what percentage of fibres come from corticospinal tract
30
what tract is the origin
corticospinal
what is somatotopy
is the point-for-point area of the body which is specific region of central nervous system
explain somatotopy
an area of the body specific to part of the CNS. it describes the organization of the moor and sensory areas of the brain
who is associated with somatotopy
jacksonian
what is the basic evidence of somatotopy
mapping of the cortex
what did david ferrier develop
anesthesia is allowed for stimulation of animal brains during surgery
what did electrical stimulation of the cortex do
evoke movements of contralateral body parts
how many parts of the brain that precisely control movement
15
What happens when u remove all 15 pieces of brain responsible for movement
no movement can occur
how can you measure brain cell activity
EEG and EcoG
what is EEG - Electroencephalography
uses electrodes placed on the skull to record brain activity- indirect
what is EcoG - electrocorticography
uses eletrodes plcaed on brain tissue to reocrd brain activity - direct
Ecog is is direct t or f
true
why is ecog direct
it is directly on the brain tissue
what is BCI
brain computer interface
what is bci used for
predicting human movement
what can the motor cortex cells encode
kinematics and kinetics
what does neuronal activity increase or decrease from changes in what
load - force and movement / kinetics
what can you map the cortex with
transcranial magnetic stimulation
what does TMS show
hot spot in which is associated to a part of the body which will move
what is the effects of training on a brain
enhanced excitability of the motor cortex,
