PSYCH 2NF3 Lecture 13: Chapter 13 – Occipital Lobes - With Diagrams
25 Oct 2017
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* lost sight in this r visual field and central stream of l visual field unaffected. * could only see a small amount from central l visual field. * reading & recognizing faces with difficult (propasgnosia). * world appeared to be grey (like the lights were off) Retina optic nerve optic chiasm optic tract lgn (predominate nucleus encoding visual information) optic radiation primary visual cortex. Visual processing actually starts to happen in the primary visual cortex. (through different regions and steps). Light dots light bars movement color etc. Vision related areas in the brain make up about 55% of the entire cortex. Vision is active in multiple lobes (everywhere except parietal). Extrastriate cortex = visual systems beyond occipital lobes. Posterior pole of the cerebral hemispheres beneath occipital bone at the back of the skull: distinguished from parietal lobe by the parietal-occipital sulcus, there are no clear divisions between occipital & temporal lobes or lateral surface.
