Psychologie (Fach) / functional task 4 (Lektion)
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- subcortical fibre bundles names and what do they do association fibres: pass between areas within one hemisphere commissural fibres: connect the two hemispheres ascending/ descending projection fibres: travel from cortex to interconnect it with more caudal areas of the CNS
- organization of cortex & layers Neocortex: 6 layers Palleocortex: 3 layers (in olfactory bulb) Archicortex: 3 layers (in hippocampus)
- Layers of cortex and types of cells( names) Molecular layer (1) --> mainly neuronal processes External granular layer (2) --> Granular neurons (remain in cortex) External pyramidal layer (3) --> Pyramidal cells (projects out of the cortex) Internal granular layer (4) --> Granular neurons internal pyramidal layer (5) ---> Pyramidal cells multiform layer (6) --> output neurons in different shapes and sizes Agranular --> ont in primary motor cortex Granular --> process sensory infor in primary sensory cortex
- Association fibres NAMES superior longitudinal fasciculus inferior occipitofrontal fasciculus superior occipitofrontal fasciculus cingulum
- Efferent fibers Corticocortical fibers: association fibers commisural fibers Projection fibers: to thalamic nuclei (corticothalamic) to basal ganglia to brainstem to spinal cord (corticospinal)
- Afferent fibers corticocortical fibers short and long association fibers commissural fibers thalamocortical fibers specific, unspecific