A model of lateral inhibition and directional selectivity in the crayfish compound eye

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dc.contributor.advisorClark, John W., Jr.en_US
dc.creatorBartels, Annemarieen_US
dc.date.accessioned2009-06-04T00:33:54Zen_US
dc.date.available2009-06-04T00:33:54Zen_US
dc.date.issued1994en_US
dc.description.abstractThis study models the network interactions of five classes of neurons in the crayfish retina which support lateral inhibition and directional selectivity. The models approximate pulse responses and responses to drifting sinusoidal gratings in each cell type. Lateral inhibition is implemented by a shunting inhibitory feedback from lamina amacrine cells to the photoreceptor terminals. This mechanism determines the range of possible spatial and temporal frequencies of the synaptic input signals to the transmedullary and tangential cells. Tangential cells implement a delay and compare operation via competitive binding of GABA and ACh to ligand-gated membrane channels. The delay and compare operation can account for the directional selectivity which is observed experimentally in the tangential cells but not in any of the cells which form its input pathway. The models presented are nonlinear. They can reproduce the observed pulse responses over wide range of light intensities.en_US
dc.format.extent138 p.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoThesis E.E. 1994 Bartelsen_US
dc.identifier.citationBartels, Annemarie. "A model of lateral inhibition and directional selectivity in the crayfish compound eye." (1994) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/13811">https://hdl.handle.net/1911/13811</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/13811en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectBiomedical engineeringen_US
dc.subjectNeurosciencesen_US
dc.subjectBiophysicsen_US
dc.subjectBiologyen_US
dc.subjectEngineeringen_US
dc.titleA model of lateral inhibition and directional selectivity in the crayfish compound eyeen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentElectrical Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
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