Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"mesopic"”.
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Visual performance in the mesopic range
… of suprathreshold visual performance under mesopic conditions. All investigations were performed using visual psychophysical techniques. Chromatic thresholds were obtained using dynamic luminance contrast noise to isolate responses to colour signals. The effects of stimulus size and spatial …
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The effect of aberrations and light scatter on visual performance at photopic and mesopic light levels
… parameters on the CAA test under photopic and mesopic conditions. This could help to provide explanations for previous CAA test results. The effect of contrast, stimulus onset time, pupil size and crowding on the CAA test was examined. This was in order to try to provide explanations for the …
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Comparing LED Lighting Systems in the Detection and Color Recognition of Roadway Objects
… each luminaire and their color contrast impact. Mesopic vision, the mode of vision most commonly used for night driving, was considered in this study. Off-axis objects were presented to participants to assess the peripheral abilities of the luminaires. The impacts of luminance and color contrast …
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Scotopic Vision: Behavioral Sensitivity and Underlying Optical and Neural Factors
… range of adaptation levels spanning scotopic and mesopic vision. Over the same luminance range, contrast thresholds were measured for neurons in the cat dorsal lateral geniculate (LGNd) and medial interlaminar (MIN) nuclei. Behavioral sensitivity was measured for 7 spatial frequencies (0, 1/8, …
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Spatial and temporal aspects of visual performance in relation to light level and normal aging
… by changes in luminance in space and/or time in mesopic conditions, including contrast sensitivity, temporal flicker sensitivity and visual acuity. The first two studies determined the effect of the aging of the retina on spatial and temporal contrast sensitivity at photopic and mesopic light …
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Characterization of the Role of R7-RGS Proteins in Mammalian Retina and Vision
… and retinal ganglion cells (RGC). R7BP regulates mesopic RGC light responses and glutamatergic wave burst duration in mature and developing retina, respectively. In part ii), we found that R7PB is expressed in the dLGN. R7BP interacts with RGS6 and RGS7 in lateral geniculate nucleus lysates, but …
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Structure-function relationships in Age-related macular degeneration in an era of multi-modal retinal imaging
… low luminance deficit, contrast sensitivity, mesopic microperimetry and rod-intercept time. These tests were found to be able to make this distinction in both the CFP and OCT-based analysis. Finally, these were the tests that showed increased sensitivity as the percentage of patients falling …
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Comparing Differentiated Rod And Cone Transcriptomes Reveals Rax As A Controller Of A Defined Cone Gene Regulatory Program
… retina. In particular, a decrease of the mesopic (dark adapted) and an increase of the photopic (light adapted) responses were found. <br></br><br></br> <b>Conclusion</b><br></br> We showed that the “double fluo” provided a robust method to isolate and cross-compare rod and cone …
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The use of silent substitution in measuring isolated cone- & rod- human electroretinograms. An electrophysiological study of human rod- and cone- photoreceptor activity derived using silent substitution paradigm
After over a decade of its discovery, the Electroretinogram (ERG) still remains the objective tool that is conventionally used in assessment of retinal function in health and disease. Although there is ongoing research in developing ERG- recording techniques, interpretation and clinical …
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Photographing the invisible: A practice based photographic investigation of different environments using peripheral vision as a phenomenological narrative on the consciousness of space and place
There can be a distancing effect in our interaction with the environment and it can be reduced to a spectacle rather than a multisensory experience through our use of photography. This practice-based research investigates the use of still photography to capture our peripheral interaction with the …
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Photographing the invisible: A practice based photographic investigation of different environments using peripheral vision as a phenomenological narrative on the consciousness of space and place
There can be a distancing effect in our interaction with the environment and it can be reduced to a spectacle rather than a multisensory experience through our use of photography. This practice-based research investigates the use of still photography to capture our peripheral interaction with the …