ANAT 321 Lecture Notes - Lecture 23: Olfactory Bulb, Pyramidal Cell, Hypothalamus
8 Nov 2016
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Document Summary
There is a map that corresponds to different odours: by looking at which mitral cells are activated, we could be able to know what smell caused the activity. The quality of the odour is what"s important. So this is a different kind of map unlike the visual system or sensory system: the odours don"t necessarily tell you where it"s coming from, but the brain allows you to determine the type/kind/quality of the scent. Axons of mitral cells and tufted cells project through the lateral olfactory tract to primary olfactory cortex: piriform cortex, olfactory tubercle, anterior olfactory nucleus, as well as the medial nucleus of the amygdala and the entorhinal cortex. The olfactory signal goes from the bulb directly to the cortex (there"s no thalamus: there is evidence that the olfactory bulb plays a similar role to the thalamus. The cortex is located on the ventral surface of the brain.
