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Primer on the Olfactory Bulb and Antennal Lobe. Brief comparative introduction of: Neurons Synaptic interactions. Olfaction: common evolutionary problems…. …common solutions. The AL and OB: Macroscopic Relations. Brain nerve I. OB projects to various brain centers. J. H. Martin, 1989.
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Primer on the Olfactory Bulb and Antennal Lobe • Brief comparative introduction of: • Neurons • Synaptic interactions
Olfaction: common evolutionary problems… …common solutions
The AL and OB: Macroscopic Relations Brain nerve I OB projects to various brain centers J. H. Martin, 1989
The Mammalian Sensory Epithelium Each olfactory receptor neuron (ORN) expresses only one gene coding an odorant receptor protein. L. Buck and R. Axel (1991) Cell 65, 175-187 Fascicles G. M. Shepherd, 2004
Synaptic interactions within the AL glomeruli AL’s BMI-sensitive Receptors: D.2.2.1 D.2.3.1 D.2.3.3 + + – cholinergic ORN input PN (output) GABAergic LN’s + AL glomerulus
AL Intrinsic (local) and Principle (output) Neurons AL MB http://www.biozentrum.uni-wuerzburg.de/fileadmin/REPORT/GENET/genet010.htm - + - + + + LH