Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Life Sciences
A Flight Sensory-Motor To Olfactory Processing Circuit In The Moth Manduca Sexta, Samual P. Bradley, Phillip D. Chapman, Kristyn M. Lizbinski, Kevin C. Daly, Andrew M. Dacks
A Flight Sensory-Motor To Olfactory Processing Circuit In The Moth Manduca Sexta, Samual P. Bradley, Phillip D. Chapman, Kristyn M. Lizbinski, Kevin C. Daly, Andrew M. Dacks
Faculty & Staff Scholarship
Neural circuits projecting information from motor to sensory pathways are common across sensory domains. These circuits typically modify sensory function as a result of motor pattern activation; this is particularly so in cases where the resultant behavior affects the sensory experience or its processing. However, such circuits have not been observed projecting to an olfactory pathway in any species despite well characterized active sampling behaviors that produce reafferent mechanical stimuli, such as sniffing in mammals and wing beating in the moth Manduca sexta. In this study we characterize a circuit that connects a flight sensory-motor center to an olfactory center …
Space Takes Time: Concentration Dependent Output Codes From Primary Olfactory Networks Rapidly Provide Additional Information At Defined Discrimination Thresholds, Kevin C. Daly, Samual Bradley, Phillip D. Chapman, Erich M. Staudacher, Regina Tiede, Joachim Schachtner
Space Takes Time: Concentration Dependent Output Codes From Primary Olfactory Networks Rapidly Provide Additional Information At Defined Discrimination Thresholds, Kevin C. Daly, Samual Bradley, Phillip D. Chapman, Erich M. Staudacher, Regina Tiede, Joachim Schachtner
Faculty & Staff Scholarship
As odor concentration increases, primary olfactory network representations expand in spatial distribution, temporal complexity and duration. However, the direct relationship between concentration dependent odor representations and the psychophysical thresholds of detection and discrimination is poorly understood. This relationship is absolutely critical as thresholds signify transition points whereby representations become meaningful to the organism. Here, we matched stimulus protocols for psychophysical assays and intracellular recordings of antennal lobe (AL) projection neurons (PNs) in the moth Manduca sexta to directly compare psychophysical thresholds and the output representations they elicit. We first behaviorally identified odor detection and discrimination thresholds across an odor dilution …
Functional Olfactory Sensory Neurons Housed In Olfactory Sensilla On The Ovipositor Of The Hawkmoth Manduca Sexta, Christian F. Klinner, Christopher Konig, Christine Missbach, Achim Werckenthin, Kevin C. Daly, Sonja Bisch-Knaden, Monika Stengl, Bill S. Hansson, Ewald Grosse-Wilde
Functional Olfactory Sensory Neurons Housed In Olfactory Sensilla On The Ovipositor Of The Hawkmoth Manduca Sexta, Christian F. Klinner, Christopher Konig, Christine Missbach, Achim Werckenthin, Kevin C. Daly, Sonja Bisch-Knaden, Monika Stengl, Bill S. Hansson, Ewald Grosse-Wilde
Faculty & Staff Scholarship
Olfactory systems evolved to detect and identify volatile chemical cues, in many cases across great distances. However, the precision of copulatory and oviposition behaviors suggest that they may be guided by olfactory cues detected by sensory systems located on or near the ovipositor. Here we present evidence of a small number of functional olfactory sensilla on the ovipositor of the hawkmoth Manduca sexta. Gene expression analysis of isolated ovipositor tissue indicated active transcription of gustatory and both classes of olfactory receptor genes. Expression of the olfactory co-receptor ORCo and the antennal ionotropic co-receptors IR8a and IR25a suggests that functional olfactory …