Motor control 3 Flashcards
are motor neurosn origianate from one area or multipart areas in area 4
mulpiapre area and conetra on wher the singal is stonger
benifits of mtor nurso comeing form mulitple area
if one nueron dies not the entire function is lost
where does the feed-forward come from before moving
reticular formation nuclei
what msules contats first bfore movemet is insicated
gastrocnmius msule in leg, for stability
feedforward
movement that happen before action happesn, in anticipation
where does the motr imput form area 6 come from
the ventral lateral nucleus in dorsal thalamus
what are the basal gangioal targets of
frontal , prefraontl and partial cortex
function of basla gangl
connect cortex to sma
what are the part so fbasal gangio
corpus striatu whihc has nuclie in cudate and putamen
funcito of caudate and putatme
imput zone of basal gangiion
what does hte corpus striatusm recive imput form
corticostriatal pathway
how do putamen and cuadre reveice impute
though medium spinry neron on surface
how many spinary neruon is on each corical axion
1000s
fucntion of bsala galnsa
inhibtoar, gabaertic,
where do axons of bsall galgli project to if gabaeric
globus pallidus and substanica nigra pars reticulata
funciton of putamen fibers
fire before limb and trunk movement
fucntion of caudate fibers
fire before eeye movement
is cortex to putament exitoary or inhibtory
exitary
is putamen to globus pallidus exitory or inhibtor
inhibtory
is globus pallidus to vlo neurons exitory or inhibitory
inhibitory
is vlo to sma exitatory or inhiboray
exitatory
effects of gating in baslal ganglia
lead ot exitemet of upper nero, due to compelx pathwya
what is the direct pathway though basal ganglia
it acgives intnetd motor progams
what is the indierect pahtwy route in basal ganglia cells
though subthalmic nuclie, in smae roune of globus palliu, interal gsena dn va/ vl
roule of indierct pathway
suppresion of competing motor programs
what happens with thalalmus due to balsal gnaglia
it is inhibiited
what are the characterisics of parkinsosn
hypokinesia - this includes - dificulty moving espiceclly voluntary movements, increased muscle tone, tremor of the hand and jaw
caues of parkinsons
degeneration of the nurons in teh the substantial nigra
effect of dopamine
enchavces coricla inputs though the direct pathway and suppresses inputs though indirect pathway
what is huntintons disease associated with
hyperkinseaia, meaing dementia an dperosialiyt disoerders
chorea - spontaneous , uncontrolled rpaid flicks nd movnetens with no purpose
cause of huntingisn
loss of cudaet, putamen and globus pallidus on basla cell ganglia
effect of the lesion in cerebellum
ataxia - uncoordinated inaccurate movement
how does cerebrum connect to cortex
verntorlateral thalamsu
effect of brain machien interfgace
attahces brain to a machine to with voultairy control of prospehic limbsm and provide sensory feedback
brain to brain feedback
uses brain signals from one animal to another animal to teach it a skill that it has never learnt before
