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Samenvatting H9 Fundamentals of Human Neuropsychology

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Samenvatting H9 Fundamentals of Human Neuropsychology. Motorsystemen.

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H9 – MOTORSYSTEMEN



Verschillende delen van het zenuwstelsel zijn betrokken bij het motorsysteem.

Hiërarchische organisatie Motorcortex:
> Hogere orde gebieden = Betrokken
bij globale taken. (wanneer
bewegen/volgorde/coördinatie
ledematen.
> Lagere orde gebieden = Betrokken
bij precieze kracht individuele
spieren, coördinatie beweging i.r.t.
verandering in houding.

REFLEXEN
Reflexen = Onmiddellijke, onwillekeurige
reacties van het lichaam op prikkels.
> Gereguleerd bij lagere orde gebieden.
> 3 soorten reflexbogen:
- Reflexboog 1
◦ Meest simpele vorm
◦ 1 sensorisch neuron  1 motor neuron
- Reflexboog 2
◦ Sensorisch neuron splits in 2
 Direct naar motor neuron
 Interneuron geeft omgekeerd signaal (inhiberend of exciterend) 
motorneuron
◦ De 2 motorneuronen zijn antagonist
- Reflexboog 3
◦ Sensorisch neuron splits zich in 3
 2 interneuronen (inhiberend en exciterend)  2 motorneuronen
 naar brein

9.1 NEOCORTEX (initiëren van beweging) 
Heb je al deze gebieden nodig voor elke beweging? Nee.
Hoe complexer de taak hoe meer corticale gebieden actief.
Simpele beweging ( bewegen vinger)
> Primair motor cortex (M1)
> Primaire somatosensorische cortex
Iets complexer
> + premotor cortex
Complex ( vinger door doolhof)
> + prefrontaal-, temporaal- en parietaalkwab

Connected book
 image
Bryan Kolb, Ian Q. Whishaw Fundamentals of Human Neuropsychology
Publisher: februari 2015 ISBN: 9781319154042 Edition: Unknown

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