Papers
Mcmains S.A and Somers D.C. (2005) Processing Efficiency of Divided Spatial Attention Mechanisms in Human Visual Cortex. J Neurosci, 25., 9444-9448 (pdf)
Logvinenko, A.D., Adelson, E.H., Ross, D.A. & Somers, D.C. (2005). Straightness as a cue for luminance edge classification. Perception & Psychophysics, 67., 120-128. (pdf)
Somers, D.C. and McMains, S.A. (2005) Spatially-Specific Attentional Modulation Revealed by fMRI. Neurobiology of Attention. L. Itti, G. Rees, J. Tsotsos (Eds.) pp 377—382. New York: Academic Press. (pdf)
Merabet, L.B., Rizzo, J.F., Somers, D.C., Pascual-Leone, A.(2005) What blindness can tell us about seeing again. Nature Reviews Neuroscience, 6, 71-77. (pdf)
McMains, S.A. and Somers, D.C. (2004) Multiple Spotlights of Attentional Selection in Human Visual Cortex. Neuron, 42, 677-686. (pdf)
See also Commentary on McMains & Somers 2004 by F. Tong, Neuron, 42. 524-526. (pdf)
Seiffert, A.E., Somers, D.C., Dale, A.M., and Tootell, R.B.H. (2003) Functional MRI studies of human motion perception: Texture, luminance, attention, and after-effects. Cerebral Cortex 13, 340-349. (pdf)
Somers, D.C., Dragoi V., and Sur, M. (2001) Orientation selectivity and its modulation by local and long-range connections in visual cortex. Cerebral Cortex, Volume 15, Cat Primary Visual Cortex. B. Payne and A. Peters (Eds.) pp 471—520. New York: Academic Press. (pdf)
Kwong, K.K., Somers, D.C., Wu, O. and Chesler, D. A. (1999) High temporal resolution event-related fMRI. Ultrafast Magnetic Resonance Imaging in Medicine. S. Naruse and H. Watari (Ed.) pp 149-152. Amsterdam: Elsevier Science. (pdf)
Somers, D.C., Dale, A.M., Seiffert, A.E., and Tootell, R.B.H. (1999) Functional MRI reveals spatially specific attentional modulation in human primary visual cortex, Proc. Natl. Acad. Sci. USA., 96, 1663-1668. (pdf)
See also Commentary on Somers et al. 1999 by M.I. Posner & C.D. Gilbert, , Proc. Natl. Acad. Sci. USA., 96, 2585-2587. (pdf)
Somers, D.C., Todorov, E.V., Siapas, A.G., Toth, L.J., Kim, D.S., and Sur, M. (1998) A local circuit integration approach to understanding visual cortical receptive fields, Cerebral Cortex, 8, 204-217. Cover Feature. (pdf) (cover-pdf)
Somers, D.C., Todorov, E.V., Siapas, A.G., and Sur, M. (1997) A local circuit integration approach to understanding visual cortical receptive fields. Computational Neuroscience, Trends in Research. J.M. Bower (Ed.), pp 505--510. New York: Plenum Press. (pdf)
Todorov, E.V., Siapas, A.G., and Somers, D.C. (1997) A model of recurrent interactions in primary visual cortex. Advances in Neural Information Processing Systems, 9, 118-124. (pdf)
Todorov, E.V., Siapas, A.G., Somers, D.C., and Nelson, S.B. (1997) Modeling visual cortical contrast adaptation effects. Computational Neuroscience, Trends in Research. J.M. Bower (Ed.), pp 525--531. New York: Plenum Press. (pdf)
Toth, L.J., Rao, S.C., Kim, D.S., Somers, D.C., and Sur, M. (1996) Subthreshold facilitation and suppression in primary visual cortex revealed by intrinsic signal imaging. Proceedings of the National Academy of Sciences, 93, 9869-9874. (pdf)
Somers, D.C., Nelson, S.B., and Sur, M. (1995) An emergent model of visual cortical orientation selectivity. The Neurobiology of Computation. J.M. Bower (Ed.) pp 311--316. Norwell, MA: Kluwer Academic Press. (pdf)
Somers, D.C., and Kopell, N. (1995) Waves and synchrony in networks of oscillators of relaxation and non-relaxation type. Physica D: Nonlinear Phenomena, 89, 169-183. (pdf)
Somers, D.C., Todorov, E.V., Toth, L.J., Rao, S.C., Kim,D.-S., Nelson, S.B., Siapas, A.G., and Sur, M. (1995). Variable gain properties of local cortical circuitry support context-dependent modulation by fixed strength long-range horizontal connections. Computational Roles of Lateral Connections in the Cortex. J. Sirosh, R. Miikkulainen (Eds.) Univ. of Texas, Electronic Book. URL: http://www.cs.utexas.edu/users/nn/web-pubs/htmlbook96/somers/ (pdf)
Somers, D.C., Todorov, E.V., Siapas, A.G., and Sur, M. (1995) Vector-based integration of local and long-range information in visual cortex. MIT Artificial Intelligence Laboratory Memo No. 1556. & Center for Biological and Computational Learning Memo No. 127. (pdf)
Somers, D.C., Nelson, S.B., and Sur, M. (1995) An emergent model of orientation selectivity in cat visual cortical simple cells. Journal of Neuroscience, 15, 5448-5465, August cover feature. (pdf) (cover-pdf)
Kopell, N., and Somers, D.C. (1995) Anti-phase solutions in relaxation oscillators coupled through excitatory interactions. Journal of Mathematical Biology 33, 261--280. (pdf)
Somers, D.C. (1993) Synchronization in networks of neural relaxation oscillators: visual cortical processing and intrinsic oscillator properties. Ph.D. Thesis. (title) (ch1) (ch2) (ch3) (ch4) (ch5) (ref)
Somers, D.C., and Kopell, N. (1993) Rapid synchronization through fast threshold modulation. Biological Cybernetics 68, 393-407. (pdf)
*Grossberg, S., and Somers, D.C. (1992) Synchronized oscillations for binding spatially distributed feature codes into coherent spatial patterns. Neural Networks for Vision and Image Processing. G.A. Carpenter and S. Grossberg (Eds.) pp 385--405. Cambridge, MA: MIT Press. (pdf)
*Grossberg, S., and Somers, D.C. (1992) Synchronized oscillations for binding spatially distributed features into pre-attentive brain representations. Structure: From Physics to General Systems. E. R. Caianello, M. Marinaro, and G. Scarpetta, (Eds.) World Scientific Press. (pdf)
*Grossberg, S., and Somers, D.C. (1991) Synchronized oscillations during cooperative feature linking in a cortical model of visual perception. Neural Networks, 4, 453--466. (pdf)
(*)-- Ph.D.~Thesis research papers written with S. Grossberg were published in accordance with departmental policy of listing authors alphabetically.
CONFERENCE ABSTRACTS
· Brady D.K, Swisher J.D. and Somers D.C. (2006) Effects of Attention on the Spatial Extent of Crowding. Vision Sciences Society Annual Meeting. (pdf)
· L.B. Merabet, J.D. Swisher, S.A. McMains, M.A. Halko, J.F. Rizzo, A. Pascual-Leone, and D.C. Somers (2006) Activation and Deactivation of Visual Cortical Areas During Tactile Processing. Association for Research in Vision and Ophthalmology Annual Meeting.
· Somers, D.C. and Adelson, E.H. (2005) Turning a brightness illusion on and off via selective attention. Society for Neuroscience Meeting.
· Swisher, J.D., Crum, K.E., McMains, S.A., Halko, M.A., Sheremata S.L., and Somers D.C. (2005) Stimulus-driven retinotopic maps in human parietal cortex observed via fmri. Society for Neuroscience Meeting.
· Merabet L.B., Swisher J.D., McMains, S.A., Halko, M.A., Amedi, A., Pascual-Leone, A. and Somers, D.C. (2005) Tactile cross-modal processing in visual cortex. Society for Neuroscience Meeting.
· McMains, S.A., Crum, K.E., Swisher J.D. and Somers, D.C. (2005) Human fronto-parietal circuitry for split spotlight and zoom lens visual spatial attention. Society for Neuroscience Meeting.
· Halko, M.A., Mingolla, E., and Somers, D.C. (2005) Dynamic cues override contradictory static occlusion cues to support robust illusory contour formation and neon color spreading. Society for Neuroscience Meeting.
· Schon, K., Tinaz, S., Somers D.C., and Stern C.E. (2005) Frontal eye field activity is not specific to active maintenance of spatial locations: an fmri study. Society for Neuroscience Meeting.
· Swisher, J.D. and Somers, D.C. (2004) Multitaper analysis of phase-encoded functional imaging data. Society for Neuroscience Meeting. (pdf)
· Halko, M.A. and Somers, D.C. (2004) Robust, moving illusory contours induced by ‘munching’ pacman Kanizsa display. Society for Neuroscience Meeting. (pdf)
· McMains, S.A. and Somers, D.C. (2004) fMRI cost-benefit analysis of split spotlight and zoom lens spatial attention mechanisms in human visual cortex. Society for Neuroscience Meeting. (pdf)
· Swisher, J., Brooking, C., Somers, D. (2004) Spatial frequency and facial expressions of emotion, Vision Sciences Society Meeting (to be published in Journal of Vision, vol 4.) (pdf)
· Somers, D.C., and McNally, R. (2003) Kinesthetic Visual Capture Induced By Apparent Motion. Journal of Vision, vol. 3, no. 7, TA43. (pdf)
· McMains, S.A. and Somers, D.C. (2002) Multiple Spotlights of Attentional Selection in Human Visual Cortex .Society for Neuroscience Meeting. (pdf)
· McMains, S.A. and Somers, D.C. (2002) Functional MRI investigation of multiple foci of visual spatial attention: More than one spotlight? Cognitive Neuroscience Society Meeting. (pdf)
· Adelson, E.H., and Somers, D.C (2001) Straightness, Structure, and Shadows. Journal of Vision, vol. 1, no. 3, A204. (pdf)
· Adelson, E. H. and Somers, D.C. (2000) Shadows are fuzzy and straight; paint is sharp and crooked. European Conference on visual Perception 142. (pdf)
· Somers, D.C., Nichols, K.R., and Adelson, E.H. (2000) Temporal dynamics reveal multiple mechanisms of brightness perception. Invest. Opthalmol. Vis. Sci. Suppl., 41, S956. (pdf)
· Somers, D.C., Seiffert, A.E., Dale, A.M., and Tootell, R.B.H. (1999) Effects of task difficulty and stimulus contrast on attentional modulation in human striate and extrastriate cortex revealed by fMRI. Society for Neuroscience Abstracts, 25, 6.10 (pdf)
· Tootell, R.B.H., Hadjikhani, N., and Somers, D.C. (1999) fMRI reveals subthreshold activation in human visual cortex: implications for consciousness. Society for Neuroscience Abstracts, 25, 6.12 (pdf)
· Somers, D.C., Seiffert, A.E., Dale, A.M., and Tootell, R.B.H. (1999) fMRI investigations of motion aftereffects with 1st and 2nd-order stimuli. Invest. Opthalmol. Vis. Sci. Suppl., 40, S1049. (pdf)
· Somers, D.C., Seiffert, A.E., Dale, A.M., and Tootell, R.B.H. (1998) An fMRI investigation of second-order visual motion processing with attentional modulation. Society for Neuroscience Abstracts, 24, 213.4. (pdf)
· Somers, D.C., Seiffert, A.E., Dale, A.M., and Tootell, R.B.H. (1998) fMRI analysis of 2nd-order visual motion perception and attentive tracking. NeuroImage, 7, S323. (pdf)
· Somers, D.C., Seiffert, A.E., Dale, A.M., and Tootell, R.B.H. (1998) Second-order motion stimulus-induced activation and attentional modulation of human visual cortical areas MT and V3A. Invest. Opthalmol. Vis. Sci. Suppl., 39, S1129. (pdf)
· Somers, D.C., Dale, A.M., Mendola, J.D., Adelson, E.H., and Tootell, R.B.H. (1997) A functional magnetic resonance imaging investigation of apparent brightness perception. Society for Neuroscience Abstracts, 23, 178.22. (pdf)
· Mazer, J.A., Somers, D.C, and Adelson, E.H. (1997) Sensitivity of area V1 neurons to apparent brightness in awake behaving macaque monkeys. Society for Neuroscience Abstracts, 23, 178.3. (pdf)
· E.H. Adelson and Somers, D.C. (1997) Statistics and configuration in lightness perception. European Conference on Visual Perception, oral presentation.
· Dragoi, V. and Somers, D.C. (1997) Short and long-term plastic effects induced by the multiple time scales of events at the cellular and synaptic level in a model of spiking neurons in primary visual cortex. Invest. Opthalmol. Vis. Sci. Suppl., 38 (4), 1791. (pdf)
· Somers, D.C. and Adelson, E.H. (1997) Junctions, transparency, and brightness. Invest. Opthalmol. Vis. Sci. Suppl., 38 (4), 2126 (pdf)
· Somers, D.C., Todorov, E.V., Siapas, A.G., and Nelson, S.B. (1996) Contrast adaptation effects modeled as thalamocortical and intracortical synaptic transmission changes. Society for Neuroscience Abstracts, 22, 254.19
· Siapas, A.G., Todorov, E., and Somers, D.C. (1995) Computing mean firing rates of ensembles of realistic neurons. Society for Neuroscience Abstracts, 21, 649.4 (pdf)
· Somers, D.C., Nelson, S.B., and Sur, M (1995) Analysis of temporal dynamics of orientation selectivity in feedback and feedforward models of visual cortex. Society for Neuroscience Abstracts, 21, 162.1. (pdf)
· Somers, D.C., Nelson, S.B., and Sur, M (1994) Effects of long-range connections on gain control in an emergent model of visual cortical orientation selectivity. Society for Neuroscience Abstracts, 20, 646.7. (pdf)
· Somers, D.C. (1993) Dynamic feature binding properties of neural relaxation oscillators. Invest. Opthalmol. Vis. Sci. Suppl., 34 (4), 457. (pdf)
· Somers, D.C., Nelson, S.B., and Sur, M. (1993) A computational investigation of the role of short—range intracortical excitation in orientation selectivity in visual cortex. Society for Neuroscience Abstracts, 19, 263.5. (pdf)
· Somers, D.C., and Kopell, N. (1992) Threshold properties of individual model neural oscillators contribute to rapid network synchronization and may potentially play a role in perceptual feature binding. Society for Neuroscience Abstracts, 18, 131.6. (pdf)
· Somers, D.C., and Grossberg, S. (1991) Synchronized oscillations during cooperative feature linking in a model of visual cortex. Society for Neuroscience Abstracts, 17, 479.2. (pdf)
· Grossberg, S., and Somers, D.C. (1991) Synchronized oscillations during cooperative feature linking in visual cortex. Proceedings of the International Joint Conference on Neural Networks, 1991 SEATTLE, Vol. 2, 249--254. (pdf)
