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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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Test Bank for Fundamentals of Human Neuropsychology 8th Edition By Bryan Kolb, Ian Whishaw All Chapter | Complete A+ Guide
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H9 – MOTORSYSTEMENVerschillende 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
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