2015
Students may have access to unmarked copies of the three articles during the exam that they bring, but otherwise the exam will be unseen. You have 90 minutes.
What is meant by a ‘double-opponent’ receptive field organisation? Explain how cells of this type may be created, and what role they may play in colour vision.
Assigned papers:
Conway, B. R., Chatterjee, S., Field, G. D., Horwitz, G. D., Johnson, E. N., Koida, K., & Mancuso, K. (2010). Advances in color science: from retina to behavior. Journal of Neuroscience, 30(45), 14955-14963. doi: 10.1523/JNEUROSCI.4348-10.2010
Shapley, R., & Hawken, M. J. (2011). Color in the Cortex: single- and double-opponent cells. Vision Research, 51(7), 701-717. doi: DOI 10.1016/j.visres.2011.02.012
Solomon, S. G., & Lennie, P. (2007). The machinery of colour vision. Nature Reviews Neuroscience, 8(4), 276-286. doi: 10.1038/nrn2094
NEURG045/M045 Visual Neuroscience 2017
2017
Students may have access to unmarked copies of the three articles during the exam that they bring, but otherwise the exam will be unseen. You have 90 minutes.
How do the visual pathways that carry the short-wavelength cone signals differ from those that carry the signals from the long-wavelength and middle-wavelength cones? How would these difference affect what we would see if our vision depended just on the short-wavelength cones and their pathways?
Papers available before and during exam:
Solomon, S. G., & Lennie, P. (2007). The machinery of colour vision. Nature Reviews Neuroscience, 8(4), 276-286.
Gegenfurtner, K. (2001). Color in the cortex revisited. Nature Neuroscience, 4(4), 339-340.
Conway, B. R., Chatterjee, S., Field, G. D., Horwitz, G. D., Johnson, E. N., Koida, K., & Mancuso, K. (2010). Advances in color science: from retina to behavior. Journal of Neuroscience, 30(45), 14955-14963.
NEURG045/M045 Visual Neuroscience 2018
2018
Students may have access to unmarked copies of the three articles during the exam that they bring, but otherwise the exam will be unseen. You have 90 minutes.
Compare and contrast colour opponency from the perspectives of neural processing and human perception.
Papers available before and during exam:
Stoughton, C. M. and B. R. Conway (2008). "Neural basis for unique hues." Current Biology 18(16): R698-699.
Lee, B. B., Martin, P. R., & Grünert, U. (2010). Retinal connectivity and primate vision. Progress in Retinal and Eye Research, 29(6), 622-639.
Shevell, S. K., & Martin, P. R. (2017). Color opponency: tutorial. Journal of the Optical Society of America A, 34(7), 1099-1108.
NEURG017/M017 Visual Neuroscience 2019
2019
Students may have access to unmarked copies of the three articles during the exam that they bring, but otherwise the exam will be unseen. You have 90 minutes.
In what ways are the S-cones and their postreceptoral pathways unique from the other cones and their pathways?
Papers available before and during exam:
Dacey, D. M., et al. (2014). "Distinct synaptic mechanisms create parallel S-ON and S-OFF color opponent pathways in the primate retina." Visual Neuroscience 31(Special Issue 02): 139-151.
Smithson, H. E. (2014). "S-cone psychophysics." Visual Neuroscience 31(Special Issue 02): 211-225.
Baudin, J., et al. (2019). "S-cone photoreceptors in the primate retina are functionally distinct from L and M cones." eLife 8: e39166.