scholarly journals Unusual response characteristics of pheromone-specific olfactory receptor neurons in the Asian corn borer moth, Ostrinia furnacalis

2006 ◽  
Vol 209 (24) ◽  
pp. 4946-4956 ◽  
Author(s):  
T. Takanashi ◽  
Y. Ishikawa ◽  
P. Anderson ◽  
Y. Huang ◽  
C. Lofstedt ◽  
...  
Keyword(s):  
Olfactory Receptor ◽  
Olfactory Receptor Neurons ◽  
Ostrinia Furnacalis ◽  
Corn Borer ◽  
Response Characteristics ◽  
Asian Corn Borer ◽  
Receptor Neurons

scholarly journals Olfactory receptor responses to sex pheromone components in the redbanded leafroller moth.

1975 ◽  
Vol 65 (2) ◽  
pp. 179-205 ◽  
Author(s):  
R J O'Connell
Keyword(s):  
Sex Pheromone ◽  
Olfactory Receptor ◽  
Olfactory Receptor Neurons ◽  
Response Frequency ◽  
Active Compounds ◽  
Odor Quality ◽  
Response Characteristics ◽  
Redbanded Leafroller ◽  
Pheromone Components ◽  
Receptor Neurons

Electrical responses of single olfactory receptor neurons of the male redbanded leafroller moth were elicited by each of the principle components of the sex pheromone and six other behaviorally active compounds. Response frequencies to equal intensities of each of these compounds and changes in response frequency with increasing amounts of any one compound, varied from receptor to receptor. These differences in response characteristics appear to be due to factors intrinsic to the olfactory recptor neuron and not to factors external to it. The encoding of odor quality by these receptor neurons cannot be in the simple presence or absence of activity in any one of them. Rather, odor quality may be encoded by the pattern of activity which invariably arises across an ensemble of receptor neurons, each having its own distribution of sensitivities.

scholarly journals Origin of basal activity in mammalian olfactory receptor neurons

2010 ◽  
Vol 136 (5) ◽  
pp. 529-540 ◽  
Author(s):  
Johannes Reisert
Keyword(s):  
Olfactory Receptor ◽  
Information Transfer ◽  
Odorant Receptor ◽  
Olfactory Receptor Neurons ◽  
Odorant Receptors ◽  
Action Potential Firing ◽  
Response Characteristics ◽  
Basal Activity ◽  
Receptor Neurons ◽  
Different Response

Mammalian odorant receptors form a large, diverse group of G protein–coupled receptors that determine the sensitivity and response profile of olfactory receptor neurons. But little is known if odorant receptors control basal and also stimulus-induced cellular properties of olfactory receptor neurons other than ligand specificity. This study demonstrates that different odorant receptors have varying degrees of basal activity, which drives concomitant receptor current fluctuations and basal action potential firing. This basal activity can be suppressed by odorants functioning as inverse agonists. Furthermore, odorant-stimulated olfactory receptor neurons expressing different odorant receptors can have strikingly different response patterns in the later phases of prolonged stimulation. Thus, the influence of odorant receptor choice on response characteristics is much more complex than previously thought, which has important consequences on odor coding and odor information transfer to the brain.

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