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Sense Organs (4)
Articles on Sense Organs
Expression of mKirre in the developing sensory pathways: Its close apposition to nephrin-expressing cells
We showed mKirre gene expression in mouse sensory organs during development using in situ hybridization and immunohistochemistry. At embryonic day (E) 11.5, E15.5, and E17.5, we first detected signals for mKirre mRNA in the developing cochleae, retinae, and olfactory neuroepithelia, respectively. Af...
A comparative ultrastructural investigation of the cephalic sensory organs in Opisthobranchia (Mollusca, Gastropoda)
Cephalic sensory organs (CSOs) are specialised structures in the head region of adult Opisthobranchia involved in perception of different stimuli. The gross morphology of these organs differs considerably among taxa. The current study aims at describing the cellular morphology of the CSOs in order t...
Sensilla position on antennae influences afferent terminal location in glomeruli.
These results revealed that the location of afferent terminals strongly reflects the three-dimensional position of their olfactory receptor neurons in pheromone-receptive glomeruli, but the relationship is weaker in other glomeruli....
Sensory processing in the Drosophila antennal lobe increases reliability and separability of ensemble odor representations.
We describe several fundamental principles of olfactory processing in the Drosophila melanogaster antennal lobe (the analog of the vertebrate olfactory bulb), through the systematic analysis of input and output spike trains of seven identified glomeruli. Repeated presentations of the same odor elici...
Processing of odor mixtures in the Drosophila antennal lobe reveals both global inhibition and glomerulus-specific interactions.
We have optically recorded glomerular calcium responses to single odors and odor mixtures from olfactory sensory neurons (OSNs) and projection neurons (PNs). Odor mixtures offer a good tool to analyze odor processing because experimental results can be tested against clear predictions. At the level...
Antagonistic roles of Wnt5 and the Drl receptor in patterning the Drosophila antennal lobe.
We have identified wnt5 as a potent organizer of the olfactory map in Drosophila melanogaster. Loss of wnt5 resulted in severe derangement of the glomerular pattern, whereas overexpression of wnt5 resulted in the formation of ectopic midline glomeruli. Cell type-specific cDNA rescue and mosaic exper...
Functional recovery following manipulation of muscles and sense organs in the stick insect leg.
We studied functional recovery of leg posture and walking behaviour in the femur-tibia joint control system of stick insects. Leg extensions in resting animals and during walking are produced by different parts of a single extensor muscle. (a) Ablation of the muscle part responsible for fast movemen...
Odor discrimination in classical conditioning of proboscis extension in two stingless bee species in comparison to Africanized honeybees.
We worked with two Brazilian stingless bees species, Melipona quadrifasciata and Scaptotrigona aff. depilis, and with the invasive Africanized honeybee, Apis mellifera. These three species present very different recruitment strategies, which could be related with different odor-learning abilities. W...
Juxtaoral organ of Chievitz, radiologically suspicious for invasion of lingual squamous cell carcinoma.
Eppendorf 2007 winner. Neural circuits underlying chemical perception.