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J Comp Physiol A

Title:		Antennal receptive fields of pheromone-responsive projection neurons in the antennal lobes of the male sphinx moth Manduca sexta
Author(s):		Heinbockel T; Hildebrand JG;
Address:		"Otto-von-Guericke-Universitat, Institut fr Physiologie, Magdeburg, Germany"
Journal Title:		J Comp Physiol A
Year:		1998
Volume:		183
Issue:		2
Page Number:		121 - 133
DOI:		10.1007/s003590050240
ISSN/ISBN:
Abstract:		"Stimulation of the antenna of the male moth, Manduca sexta, with a key component of the female's sex pheromone and a mimic of the second key component evokes responses in projection neurons in the sexually dimorphic macroglomerular complex of the antennal lobe. Using intracellular recording and staining techniques, we studied the antennal receptive fields of 149 such projection neurons. An antennal flagellum was stimulated in six regions along its proximo-distal axis with one or both of the pheromone-related compounds while activity was recorded in projection neurons. These neurons fell mainly into two groups, based on their responses to the two-component blend: neurons with broad receptive fields that were excited when any region of the flagellum was stimulated, and neurons selectively excited by stimulation of the proximal region of the flagellum. Projection neurons that were depolarized by stimulation of one antennal region were not inhibited by stimulation of other regions, suggesting absence of antennotopic center-surround organization. In most projection neurons, the receptive field was determined by afferent input evoked by only one of the two components. Different receptive-field properties of projection neurons may be related to the roles of these neurons in sensory control of the various phases of pheromone-modulated behavior of male moths"
Keywords:		Animals Male Manduca/*physiology Neurons/drug effects/physiology Olfactory Pathways/anatomy & histology/*physiology Pheromones/*pharmacology Sense Organs/anatomy & histology/*physiology Sex Characteristics Synaptic Transmission/*physiology;
Notes:		"MedlineHeinbockel, T Hildebrand, J G eng AI-23253/AI/NIAID NIH HHS/ Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Germany 1998/08/07 J Comp Physiol A. 1998 Aug; 183(2):121-33. doi: 10.1007/s003590050240"