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Spectral properties of dark-adapted plaice retinal ganglion cells
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dc.contributor.advisor | Horridge, G. Adrian | |
dc.contributor.author | Hammond, Peter | |
dc.coverage.spatial | 128 p. | en_US |
dc.date.accessioned | 2018-06-27T08:25:17Z | |
dc.date.available | 2018-06-27T08:25:17Z | |
dc.date.issued | 1967 | |
dc.identifier.uri | https://hdl.handle.net/10023/14650 | |
dc.description.abstract | 1. The spectral, spatial and temporal properties of receptive fields of dark-adapted, on-off retinal ganglion cells in the intact eye of the plaice, have been analysed by recording responses from their axon terminals in the superficial layers of the contra-lateral optic tectum with indium micro-electrodes. 2 Two cell-types have been identified on criteria of discharge patterns. The first type gives spectrally opponent "on-off" responses to coloured stimuli, with no subdivision of receptive fields into centre and periphery. On and "off" response-components are mutually inhibitory. The second type gives slow-adapting, "on-off" or "off" responses for different stimulus positions within the receptive field, with centre-surround or adjacent field patterns. Only "on-off" centre, off"-surround cells, or "off"-centre, "on-off" surround cells have been found, "On-off" centre cells exhibit mutual antagonism between field centre and surround. "Off"-centre cells possess inhibitory centres. This cell-type gives only weak opponent, or possibly non-opponent responses. 3. Moot cells of each type receive rod input in addition to input from cones. At stimulus intensities suprathreshold for cones, response-components give spectral maxima or more of four wavelength ranges; blue, 440-460 mum; blue-green, 470-490 mum; green, 510-540 mum; and orange, 560-590 mum. No cello give red sensitivity maxima. At low stimulus intensities all cells with rod input give a single spectral peak between 520 and 530 mum. | en_US |
dc.language.iso | en | en_US |
dc.publisher | University of St Andrews | |
dc.subject.lcc | QP479.H2 | |
dc.subject.lcsh | Retina | en |
dc.title | Spectral properties of dark-adapted plaice retinal ganglion cells | en_US |
dc.type | Thesis | en_US |
dc.type.qualificationlevel | Doctoral | en_US |
dc.type.qualificationname | PhD Doctor of Philosophy | en_US |
dc.publisher.institution | The University of St Andrews | en_US |
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