Visual Pathway

Visual Pathway

1. Most ganglion cells cross to the opposing hemispherere and the go to the lateral geniculate necleus (part of the thalamus). They then go to the primary visual cortex in the occipital lobe

   • Ventral stream- through the temporal cortex. The 'what' pathway. Identifies and recognizes objects
   • Dorsal stream- through the parietal cortex. The 'where' pathway. Helps motor system locate objects.
   • Other ganglion cells go to the superior colliculus or the hypothalamus that controls the waking-sleeping schedule

2. Parvocellular neurons- small cell bodies and receptive fields, are mostly in or near the fovea (colour, visual details).

3. Magnocellular neurons- large cell bodies and receptive fields, evenly distributed throughout the retina (movement, large overall patterns).

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