Neuronal connections and the function of the corpora pedunculata in the brain of the American cockroach, Periplaneta americana (L.) Based on portions of a dissertation submitted to the Department of Zoology, The University of Michigan, in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Weiss, '70).

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dc.contributor.author Weiss, Mitchell J. en_US
dc.date.accessioned 2007-04-06T18:44:20Z
dc.date.available 2007-04-06T18:44:20Z
dc.date.issued 1974-01 en_US
dc.identifier.citation Weiss, Mitchell J. (1974)."Neuronal connections and the function of the corpora pedunculata in the brain of the American cockroach, Periplaneta americana (L.) Based on portions of a dissertation submitted to the Department of Zoology, The University of Michigan, in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Weiss, '70). ." Journal of Morphology 142(1): 21-69. <http://hdl.handle.net/2027.42/50257> en_US
dc.identifier.issn 0362-2525 en_US
dc.identifier.issn 1097-4687 en_US
dc.identifier.uri http://hdl.handle.net/2027.42/50257
dc.description.abstract The fiber constituents and connections of the calyces — the input-receiving regions — of the corpora pedunculata (“mushroom bodies”) were studied in reduced silver preparations from the American cockroach, Periplaneta americana (L.). In the outer synaptic layer of the calyces five fiber classes were distinguished, the first three of which arise outside the mushroom body. (1) Four highly similar neurons with somata near the optic lobe branch into different parts of the ipsiateral protocerebrum, including both calyces. Their fibers are highly constant in arrangement and position and contain small nucleus-like bodies. (2) The tractus olfactorio-globularis ( sensu lato ) emits fiber groups which course along the calycal walls as “calycal tracts” before ultimately dissipating into the synaptic layer. Variability within these tracts is described. (3) Fibers of undertermined origin outside the mushroom body radiate from the calycal center outwards through the synaptic layer. (4) From the inner calycal layer of neurites belonging to intrinsic mushroom-body neurons, perpendicular collaterals enter the synaptic layer. (5) Intrinsic-neuron somata near the calycal rim emit fibers which course tangentially within the synaptic layer from calycal rim to center. These fibers form a special peripheral zone in the pedunculus. The predominant presumably afferent calycal fiber class is that derived from the tractus olfactorio-globularis. No evidence was found for tracts from optic lobe to calyces. On this basis, and in light of the experimental and comparative anatomical literature, it is suggested that the corpora pedunculata of P. americana and other pterygotes are fundamentally second-order antennal sensory processing centers. Conflicting observations in earlier reports are critically discussed. en_US
dc.format.extent 4452727 bytes
dc.format.extent 3118 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.publisher Wiley Subscription Services, Inc., A Wiley Company en_US
dc.subject.other Life and Medical Sciences en_US
dc.subject.other Cell & Developmental Biology en_US
dc.title Neuronal connections and the function of the corpora pedunculata in the brain of the American cockroach, Periplaneta americana (L.) Based on portions of a dissertation submitted to the Department of Zoology, The University of Michigan, in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Weiss, '70). en_US
dc.type Article en_US
dc.rights.robots IndexNoFollow en_US
dc.subject.hlbsecondlevel Molecular, Cellular and Developmental Biology en_US
dc.subject.hlbtoplevel Health Sciences en_US
dc.subject.hlbtoplevel Science en_US
dc.description.peerreviewed Peer Reviewed en_US
dc.contributor.affiliationum Department of Zoology, The University of Michigan, Ann Arbor, Michigan, 48104 en_US
dc.description.bitstreamurl http://deepblue.lib.umich.edu/bitstream/2027.42/50257/1/1051420103_ftp.pdf en_US
dc.identifier.doi http://dx.doi.org/10.1002/jmor.1051420103 en_US
dc.identifier.source Journal of Morphology en_US
dc.owningcollname Interdisciplinary and Peer-Reviewed
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