Summary
Samenvatting Biomedische wetenschappen
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Biomedische wetenschappen
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bruceseurey
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HersenschorsFrontaalkwab
Begrensd door sulcus centralis (achteraan) en fissura lateralis (onderaan)
- Oordelen en redeneren (prefrontale kwab)
- Gewilde bewegingen (spraak- en slikbewegingen, ledematen, …)
- Enkel in taaldominante hemisfeer, in onderste frontale gyrus
- Neuronen genereren motorische programma’s voor spraak en syntax
Area 44 = Broca
- Letsel à niet-vloeiende afasie (Broca afasie): telegramstijl, wel betekenisvol, maar
grammaticale fouten, begrip van taal is bewaard
- Primair motorische schors, vlak voor sulcus centralis, in gyrus precentralis
Area 4 - Centraal motorische neuronen, betrokken bij controle van gewilde bewegingen
- Neuronuitlopers vormen piramidebaan
- Premotorische schors = motorische associatie cortex
Area 6 - Zorgt voor extrapiramidale motorische programma’s voor uitvoeren van bewegingen
- Letsel à problemen met uitvoeren van bewegingen à onhandigheid = apraxie
- Frontale blikcentra
Area 8
- Bewust, exploratief zoeken met ogen
Pariëtaalkwab
Achter sulcus centralis / geen duidelijke afgrenzing met occipitaalkwab / onderaan: begrensd t.o.v. temporale
kwab door fissura lateralis
- Primair sensorische area, vlak achter sulcus centralis in gyrus postcentralis
- Ontvangt sensibele info van gehele lichaam
Area 3, 1 & 2
- Info vanuit primair sensibele area à sensibele associatiecortex
- Letsel à contralaterale hypoesthesie
- Sensibele associatiecortex
Area 5 & 7
- Meer gedetailleerde analyse en fijnere discriminatie
- Gyrus angularis: drielandenpunt tussen occipitaal-, temporaal- en pariëtaalkwab
Area 39
- Herkennen van visuele symbolen à lezen en schrijven!
- Gyrus supramarginalis
Area 40
- Rol bij taalverwerking
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