Serotonergic cells innervating the Drosophila antennal lobe are inhibited by odors and modulate olfactory responses in conjunction with the entire serotonergic network.

FIB-SEM is used to identify comprehensively and reconstruct 192 neurons and their complete connectome for glomerulus VA1v of the Drosophila antennal lobe, in particular to reconstruct its local interneurons.

A comprehensive synapse-level analysis of a fly central-brain region has led to the identification of molecules that are necessary for mediating the normal density of connections.

Neurons in the fruit fly olfactory system respond most strongly to the sudden appearance of an odor, and to odors that are changing rapidly in strength, but are relatively insensitive to the absolute levels of an odor.

Neuronal diversity is expanded by a temporal fating paradigm utilizing hierarchical gene regulation.

The lateral horn can be classified into three functional odor response domains that decode opposing hedonic valences and odor intensity.

Starvation upregulates activity in certain sensory channels and downregulates it in others in what appears to be an optimization strategy that serves to increase the hedonic value of food odors.

The complete neural circuit map of a tractable olfactory system will support studies towards bridging the gap between circuits and behavior.

The activity of serotonergic neurons spanning multiple olfactory areas is regulated by both local synaptic interactions and dendrite wide computations.

X-ray imaging reveals well-preserved internal characters in mineralized arthropods from the Paleogene, urging the reexamination of previously neglected fossil collections.