Morphology and physiology of olfactory neurons in the lateral protocerebrum of the silkmoth Bombyx mori.

ABSTRACT: Insect olfaction is a suitable model to investigate sensory processing in the brain. Olfactory information is first processed in the antennal lobe and is then conveyed to two second-order centres-the mushroom body calyx and the lateral protocerebrum. Projection neurons processing sex pheromones and plant odours supply the delta area of the inferior lateral protocerebrum (?ILPC) and lateral horn (LH), respectively. Here, we investigated the neurons arising from these regions in the brain of the silkmoth, Bombyx mori, using mass staining and intracellular recording with a sharp glass microelectrode. The output neurons from the ?ILPC projected to the superior medial protocerebrum, whereas those from the LH projected to the superior lateral protocerebrum. The dendritic innervations of output neurons from the ?ILPC formed a subdivision in the ?ILPC. We discuss pathways for odour processing in higher order centres.

SUBMITTER: Namiki S 

PROVIDER: S-EPMC6851382 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature