Seminars & Events
Thursday, September 11, 2014: Dr. Bevil Conway (Wellesley College) will speak on his research in visual neuroscience and color at 4:30 pm in Goodpaster Hall 195.
Monday, October 27, 2014: Dr. Todd Gould (University of Maryland Baltimore) will speak on "Genes to behaviors to treatments in bipolar disorder" at 4:45 pm in Goodpaster Hall 195.Friday, December 5, 2014: Dr. Brian Mathur (University of Maryland Baltimore) will speak on "Braking bad: Aberrant inhibitory neurotransmission in addiction" at 3:00 pm in Goodpaster Hall 195.
Selckmann, Gordon Michael (2010). An Investigation of the Teleost Sensory Saccular Epithelia: Cranial Nerve Arborization and Innervation of the Saccule Sensory Epithelia. Mentor: Dr. John Ramcharitar
Members of the teleost family Sciaenidae show significant variation in the inner ear and accessory hearing structures. In this study we examined the inner ear morphology of the sciaenids Micropogonias undulates, Sciaenops ocellatus, Leostomus xanthurus, and from the bass Moronidae family, Morone Americana inner ears were isolated via gross level dissections, arborization of the 8th cranial nerve onto the saccule was studied via osmium staining and hair cell densities over the saccular sensory epithelia via a fluorescent techniques. I found that there are more complex 8th nerve arborization patterns on the saccular sensory epithelium of species with accessory hearing organs. There were also interspecific differences in total numbers of hair cells in specialized species. The more specialized species showed greater numbers of hair cells than generalized species. The morphological specializations of the inner ear and swim bladder of the studied sciaenids may be linked to the enhanced hearing capabilities. The findings of this study suggest the possibility of frequency tuning on the saccular sensory epithium.