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Marc A. Sommer, Ph.D.

Publications

  • Wurtz, R. H. and Sommer, M. A. (submitted) Identifying corollary discharges for movement in the primate brain. In C. A. Heywood and D. Miller (Editors), The Roots of Visual Awareness, Progress in Brain Research. Amsterdam: Elsevier Science

  • Sommer, M. A. and Wurtz, R. H (in press) The dialogue between cerebral cortex and superior colliculus: implications for saccadic target selection and corollary discharge. In L. M. Chalupa and J. S. Werner (Editors), The Visual Neurosciences. Cambridge, Massachusetts: MIT Press

  • Sommer. M. A. and Wurtz, R. H. (2002) A pathway in primate brain for internal monitoring of movements. Science, 296: 1480-1482

  • Wurtz, R. H., Sommer, M. A., Paré, M., and Ferraina, S. (2001) Signal transformations from cerebral cortex to superior colliculus for the generation of saccades. Vision Research, 41: 3397-3410

  • Sommer, M. A. and Wurtz, R. H. (2001) Frontal eye field sends delay activity related to movement, memory, and vision to the superior colliculus. Journal of Neurophysiology, 85:1673-1685

  • Port, N. L., Sommer, M. A., and Wurtz, R. H. (2000) Multielectrode evidence for spreading activity across the superior colliculus movement map. Journal of Neurophysiology, 84:344-357

  • Sommer, M. A. and Wurtz, R. H. (2000) Composition and topographic organization of signals sent from the frontal eye field to the superior colliculus. Journal of Neurophysiology, 83:1979-2001

  • Wurt, R. H., Basso M. A., Paré M., and Sommer, M. A. (2000) The superior colliculus and the cognitive control of movement. In Gazzaniga M. S. (Editor-in-Chief), The New Cognitive Neurosciences, Second Edition (pp. 573-587). Cambridge, MA: The MIT Press

  • Tehovnik, E. J., Sommer, M. A., Chou, I.-H, Slocum, W. M., and Schiller, P. H. (2000) Eye fields in the frontal lobes of primates. Brain Research Reviews, 32: 413-448

  • Sommer, M. A. and Tehovnik, E. J. (1999) Reversible inactivation of macaque dorsomedial frontal cortex: effects on saccades and fixations. Experimental Brain Research, 124:429-446

  • Chou, I-H., Sommer, M. A., and Schiller, P. H. (1999) Express averaging saccades in monkeys. Vision Research, 39:4200-4216

  • Sommer M. A. and Wurtz R. H. (1998) Frontal eye field neurons orthodromically activated from the superior colliculus. Journal of Neurophysiology, 80:3331-3335

  • Nichols, A. M., Ruffner, T. W., Sommer, M. A., and Wurtz, R. H. (1998) A screw microdrive for adjustable chronic unit recording in monkeys. Journal of Neuroscience Methods, 81:185-188

  • Sommer, M. A. (1997) The spatial relationship between scanning saccades and express saccades. Vision Research, 37:2745-2756

  • Tehovnik, E. J. and Sommer, M. A. (1997) Electrically-evoked saccades from the dorsomedial frontal cortex and frontal eye fields: a parametric evaluation reveals differences between areas. Experimental Brain Research, 117:369-378

  • Sommer, M. A. and Tehovnik, E. J. (1997) Reversible inactivation of macaque frontal eye field. Experimental Brain Research, 116:229-249

  • Tehovnik, E. J. and Sommer, M. A. (1997) Effective spread and timecourse of neural inactivation caused by lidocaine injection in monkey cerebral cortex. Journal of Neuroscience Methods, 74:17-26

  • Tehovnik, E. J. and Sommer, M. A. (1996) Compensatory saccades made to remembered targets following orbital displacement by electrically stimulating the dorsomedial frontal cortex or frontal eye fields of primates. Brain Research, 727:221-224

  • Sommer, M. A. (1994) Express saccades elicited during visual scan in the monkey. Vision Research, 34:2023-2038

  • Richards, W., Wilson, H. R., and Sommer, M. A. (1994) Chaos in percepts? Biological Cybernetics, 70:345-349

  • Smith, M. E., Sadler, R. H., and Sommer, M. A. (1994) The macrophage as the demyelinative agent: a role for antimyelin antibodies. In R. M. Herndon and F.J. Seil (Editors), Multiple Sclerosis: Current Status of Research and Treatment (pp. 51-66). New York: Demos Publications

  • Sommer, M. A., Schiller, P. H., and McPeek, R. M. (1993) What neural pathways mediate express saccades? Behavioral and Brain Sciences, 16:589-590

  • Smith, M. E. and Sommer, M. A. (1992) Association between cell-mediated demyelination and astrocyte stimulation. Progress in Brain Research, 94:411-422

  • Sommer, M. A., Forno, L. S., and Smith, M. E. (1992) EAE cerebrospinal fluid augments in vitro phagocytosis and metabolism of CNS myelin by macrophages. Journal of Neuroscience Research, 32:384-394

  • Sadler, R. H., Sommer, M. A., Forno, L. S., and Smith, M. E. (1991) Induction of anti-myelin antibodies in EAE and their possible role in demyelination. Journal of Neuroscience Research, 30:616-624

  • Hrushesky, W. J. M., Fader, D. J., Berestka, J. S., Sommer, M. A., Hayes, J., and Cope, F. O. (1991) Diminishment of respiratory sinus arrhythmia foreshadows doxorubicin-induced cardiomyopathy. Circulation, 84:697-707

  • Sommer, M. A. and Berestka, J. (1987) R.S.A - Respiratory sinus arrhythmia, a new measure of cardiac health. Medical Electronics, 18:112-114

Papers in Preparation
  • Sommer, M. A. and Wurtz, R. H. The superior colliculus and its interactions with cerebral cortex. In L. M. Chalupa and J. S. Werner (Editors), The Visual Neurosciences. Cambridge, Massachusetts: MIT Press

  • Sommer, M. A. and Wurtz, R. H. Transmission of corollary discharge signals from brainstem to frontal lobe via the mediodorsal thalamus

  • Sommer, M. A. and Wurtz, R. H. Visual and oculomotor signals in the ascending pathway from superior colliculus to frontal eye field

  • Sommer, M. A. and Wurtz, R. H. Comparison of frontal eye field input neurons and output neurons

Abstracts
  • Sommer, M. A. and Wurtz, R. H. (2001) Inactivation of mediodorsal thalamus causes saccadic deficits consistent with impairment of corollary discharge. Society for Neuroscience Abstracts, Program No. 575.13, 31st Annual Meeting of the Society for Neuroscience, San Diego, California

  • Sommer, M. A. and Wurtz, R. H. (2001) A subcortical source of visual input to the frontal eye field. 1st Annual Meeting of the Vision Sciences Society, Sarasota, Florida

  • Sommer, M. A. and Wurtz, R. H. (2000) Activity in the pathway from superior colliculus to frontal eye field: mediodorsal thalamus relay neurons. Society for Neuroscience Abstracts, 26:292, 30th Annual Meeting of the Society for Neuroscience, New Orleans, Louisiana

  • Wurtz, R. H. and Sommer, M. A. (2000) Activity in the pathway from superior colliculus to frontal eye field: tectothalamic neurons. Society for Neuroscience Abstracts, 26:969, 30th Annual Meeting of the Society for Neuroscience, New Orleans, Louisiana

  • Sommer, M. A. and Wurtz, R. H. (1999) The topographic organization of signals sent from frontal eye field to superior colliculus. Society for Neuroscience Abstracts, 25:805. 29th Annual Meeting of the Society for Neuroscience, Miami Beach, Florida

  • Sommer, M. A., and Wurtz, R. H. (1998) Properties of macaque frontal eye field neurons driven orthodromically from the superior colliculus. Society for Neuroscience Abstracts, 24:522. 28th Annual Meeting of the Society for Neuroscience, Los Angeles, California

  • Port, N. L., Sommer, M. A., and Wurtz, R. H. (1998) Multi-electrode recordings in rhesus monkey superior colliculus. Society for Neuroscience Abstracts, 24:1498. 28th Annual Meeting of the Society for Neuroscience, Los Angeles, California

  • Wurtz, R. H., and Sommer, M. A. (1998) Instructional dependence of delay activity in the projection from frontal eye field to superior colliculus. Society for Neuroscience Abstracts, 24:1146. 28th Annual Meeting of the Society for Neuroscience, Los Angeles, California

  • Sommer, M. A., Paré M., and Wurtz, R. H. (1997) Instructional dependence of preparatory discharges of superior colliculus neurons. Society for Neuroscience Abstracts, 23:843. 27th Annual Meeting of the Society for Neuroscience, New Orleans, Louisiana

  • Sommer, M. A. (1995) Oculomotor effects of reversibly inactivating the frontal eye field or dorsomedial frontal cortex. Panel presentation in "Role of the primate frontal and medial eye fields in oculomotor control." 5th Annual Meeting of Neural Control of Movement, Key West, Florida

  • Chou, I-H., Sommer, M. A., and Schiller, P. H. (1994) Bimodal latency distribution of averaging saccades in the monkey. Society for Neuroscience Abstracts, 20:1401. 24th Annual Meeting of the Society for Neuroscience, Miami Beach, Florida

  • Sommer, M. A. (1993) Saccadic eye movements made to continually present and to suddenly appearing visual stimuli. Society for Neuroscience Abstracts, 19:785. 23rd Annual Meeting of the Society for Neuroscience, Washington, D.C.

  • Sommer, M. A. and Schiller, P. H. (1992) Express saccades elicited during natural fixations of visual search. Society for Neuroscience Abstracts, 18:1398. 22nd Annual Meeting of the Society for Neuroscience, Anaheim, California

  • McPeek, R. M., Sommer, M. A., and Schiller, P. H. (1991) Saccadic latencies to stimuli defined only by luminance, chrominance, motion, and depth. Society for Neuroscience Abstracts, 17:847. 21st Annual Meeting of the Society for Neuroscience, New Orleans, Louisiana

  • Sommer, M. A. and Smith M. E. (1990) EAE cerebrospinal fluid enhances in vitro phagocytosis and metabolism of myelin by macrophages. Transactions of the American Society for Neurochemistry, 21:291. 21st Annual Meeting of the American Society for Neurochemistry, Phoenix, Arizona

 

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