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Mechanisms of olfactory discrimination: converging evidence for common principles across phyla.
The findings support the hypothesis that olfactory transduction and neural processing in the peripheral Olfactory pathway involve basic mechanisms that are universal across most species in most phyla.
Anatomy of antenno-cerebral pathways in the brain of the sphinx moth Manduca sexta
The morphological diversity of connections between the antennal lobes and the protocerebrum, described here for the first time on a single-cell level, suggests a much greater physiological complexity of the olfactory system than has been assumed so far.
Male-specific, sex pheromone-selective projection neurons in the antennal lobes of the mothManduca sexta
Observations suggest that some of the male-specific projection neurons in the brain of maleManduca sexta may signal general pheromone-triggered arousal, whereas a smaller number can actively integrate inputs from the two known receptor classes and may operate as ‘mixture detectors’ at this level of the olfactory subsystem that processes information about sex phersomones.
Olfactory interneurons in the moth Manduca sexta: response characteristics and morphology of central neurons in the antennal lobes
Two types of pheromone-sensitive local interneurons have been described morphologically and physiologically while a single type of output neuron has been found that has a dendritic arborization in the macroglomerular complex.
Immunocytochemistry of GABA in the antennal lobes of the sphinx moth Manduca sexta
Double-labeling experiments involving tandem intracellular staining with Lucifer Yellow and immunocytochemical staining for GABA-like immunoreactivity demonstrated that at least some of the GABA-immunoreactive cells in the antennal lobe are amacrine local interneurons.
Multitasking in the Olfactory System: Context-Dependent Responses to Odors Reveal Dual GABA-Regulated Coding Mechanisms in Single Olfactory Projection Neurons
- T. Christensen, B. Waldrop, J. Hildebrand
- Biology, PsychologyThe Journal of Neuroscience
- 1 August 1998
It is shown that certain projection neurons (PNs) in the primary olfactory center in the brain give context-dependent responses to a specific odor blend, and these responses are shaped in several ways by a bicuculline-sensitive GABA receptor.
Local interneurons and information processing in the olfactory glomeruli of the moth Manduca sexta
- T. Christensen, B. Waldrop, I. Harrow, J. Hildebrand
- BiologyJournal of Comparative Physiology A
- 1 October 1993
Simultaneous intracellular recordings from a local interneuron with short-latency responses and a projection (output) neuron revealed unidirectional synaptic interactions between these two cell types, providing the first direct evidence of an inhibitory role forLocal interneurons in olfactory information processing in insects.
Combinatorial odor discrimination in the brain: Attractive and antagonist odor blends are represented in distinct combinations of uniquely identifiable glomeruli
The results suggest that the selective activation of different combinations of functionally distinct MGC glomeruli is a general means for discriminating these specific attractant and antagonist chemical signals in the brain.
A pulsed UWB receiver SoC for insect motion control
A pulsed ultrawideband (UWB) RX SoC designed for the stringent weight, volume and power constraints of the cyborg moth system is presented.
Local inhibition modulates odor-evoked synchronization of glomerulus-specific output neurons
Odor-evoked responses simultaneously from pairs of projection neurons innervating the same or different glomeruli in the macroglomerular complex (MGC), which is involved in processing pheromonal information are recorded.