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Kerstin Schmidt

Kerstin Schmidt

Professor, Brain Institute - Federal University of Rio Grande do Norte (UFRN)
Laboratory: Cortico-Cortical Processing
Lattes: http://lattes.cnpq.br/4902752912395893
E-mail: kschmidt@neuro.ufrn.br
Areas of interest: Cortico-cortical processing

Neurons in early visual cortex were believed to be spatially restricted analyzers of the visual world. However, in the past years, it became increasingly clear that a single neuron's response is critically influenced by stimuli presented outside the classical receptive field. Thus, it has been proven difficult to characterize the coding of complex stimuli at the level of single neurons. Using optical imaging techniques and multi-electrode recordings, we investigate cortical representations at the population level. The comprehensive spatial information gained with the imaging technique is complemented by the temporal precision of electrophysiological recordings from previously identified cortical sites of interest. In order to investigate the contribution of different cortico-cortical circuits to cortical representations we apply reversible deactivation and microstimulation techniques.


Publications

Tiago Siebert Altavini, Sergio Andres Conde-Ocazionez, David Eriksson, Thomas Wunderle, Kerstin Erika Schmidt. Selective interhemispheric circuits account for a cardinal bias in spontaneous activity within early visual areas. http://dx.doi.org/10.1016/j.neuroimage.2016.09.048.
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Schmidt, Kerstin E. (2016) Do lateral intrinsic and callosal axons have comparable actions in early visual areas ? In: Axons and Brain Architecture. San Diego : Elsevier, 2016, v.1. p.159-182
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Wunderle T, Eriksson D, Peiker C, Schmidt KE (2015) Input and output gain modulation by the lateral interhemispheric network in early visual cortex. J Neurosci. 35(20):7682-94. doi: 10.1523/JNEUROSCI.4154-14.2015.
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Christiane Peiker, Thomas Wunderle, David Eriksson, Anne Schmidt, and Kerstin E. Schmidt (2013). An Updated Midline Rule: Visual Callosal Connections Anticipate Shape and Motion in Ongoing Activity across the Hemispheres. The Journal of Neuroscience, 13 November 2013, 33(46):18036-18046; doi:10.1523/JNEUROSCI.1181-13.2013
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Kerstin E. Schmidt, "The Visual Callosal Connection: A Connection Like Any Other?," Neural Plasticity, vol. 2013, Article ID 397176, 11 pages, 2013. doi:10.1155/2013/397176.
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Wunderle, T. ; Eriksson, D. ; Schmidt, K. E. . Multiplicative Mechanism of Lateral Interactions Revealed by Controlling Interhemispheric Input. Cerebral Cortex (New York, N.Y. 1991), v. 1, p. 1, 2012.
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Eriksson, David ; Wunderle, Thomas ; Schmidt, Kerstin . Visual cortex combines a stimulus and an error-like signal with a proportion that is dependent on time, space, and stimulus contrast. Frontiers in Systems Neuroscience, v. 6, p. 26, 2012.
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Schmidt, K.E. ; Lomber, S.G. ; Payne, B.R. ; Galuske, R.A.W. . Pattern motion representation in primary visual cortex is mediated by transcortical feedback. NeuroImage (Orlando, Fla. Print), v. 54, p. 474-484, 2011.
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Eriksson, David ; Vicente, Raul ; Schmidt, Kerstin . A Linear Model of Phase-Dependent Power Correlations in Neuronal Oscillations. Frontiers in Computational Neuroscience, v. 5, p. 1-14, 2011. 
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Schmidt, K. E. ; Lomber, S. G. ; Innocenti, G. M. . Specificity of Neuronal Responses in Primary Visual Cortex Is Modulated by Interhemispheric CorticoCortical Input. Cerebral Cortex (New York, N.Y. 1991), v. 20, p. 2776-2786, 2010.
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Schmidt, K. E. ; Löwel, Siegrid . Binocular phasic coactivation does not prevent ocular dominance segregation. Frontiers in Bioscience, v. Volume, p. 3381, 2008.
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Makarov, V. A. ; SCHMIDT, K. E. ; Castellanos, N. P. ; Lopez-Aguado, L. ; Innocenti, G. M. . Stimulus-Dependent Interaction between the Visual Areas 17 and 18 of the 2 Hemispheres of the Ferret (Mustela putorius). Cerebral Cortex (New York), v. 18, p. 1951-1960, 2007.
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Carmeli, Cristian ; Lopez-Aguado, Laura ; Schmidt, Kerstin E. ; De Feo, Oscar ; Innocenti, Giorgio M. ; Matsunami, Hiroaki . A Novel Interhemispheric Interaction: Modulation of Neuronal Cooperativity in the Visual Areas, v. 2, p. e1287, 2007.
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Schmidt, Kerstin E. ; Castelo-Branco, Miguel ; Goebel, Rainer ; Payne, Bertram R. ; Lomber, Stephen G. ; Galuske, Ralf A. W. . Pattern motion selectivity in population responses of area?18. European Journal of Neuroscience, v. 24, p. 2363-2374, 2006.
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Niessing, J. ; Ebisch, B ; Schmidt, K. E. ; Niessing, M ; Singer, Wolf ; Galuske, R. A. W. . Hemodynamic Signals Correlate Tightly with Synchronized Gamma Oscillations. Science, v. 309, p. 948-951, 2005.
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Schmidt, K. E. ; Singer, Wolf ; Galuske, R. A. W. . Processing Deficits in Primary Visual Cortex of Amblyopic Cats. Journal of Neurophysiology, v. 91, p. 1661-1671, 2004.
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Niessing, M ; Schmidt, K. E. ; Singer, Wolf ; Galuske, R. A. W. . Precise placement of multiple electrodes into functionally predefined cortical locations. Journal of Neuroscience Methods, v. 126, p. 195-207, 2003.
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Schmidt, K. E. ; Linden, D.E. ; Goebel, Rainer ; Zanella, F.E. ; Lanfermann, H ; Zubcov, A.A. . Striatal activation during blepharospasm revealed by fMRI. Neurology (Cleveland, Ohio), v. 60, p. 1738-1744, 2003.
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Rathjen, Stefan ; Schmidt, K. E. ; Löwel, Siegrid . Postnatal growth and column spacing in cat primary visual cortex. Experimental Brain Research, v. 149, p. 151-159, 2003.

Rathjen, Stefan ; Schmidt, Kerstin ; L&amp ; Schmidt, K. E. . Two-dimensional analysis of the spacing of ocular dominance columns in normally raised and strabismic kittens. Experimental Brain Research, v. 145, p. 158-165, 2002.
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Schmidt, K. E. ; Stephan, M ; Singer, Wolf ; Löwel, Siegrid . Spatial analysis of ocular dominance patterns in monocularly deprived cats. Cerebral Cortex (New York), v. 12, p. 783-796, 2002.
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Payne, Bertram R. ; Lomber, Stephen G. ; Schmidt, K. E. ; Galuske, R. A. W. . Feedback circuits: Link to ability to redirect attention. Journal of Vision (Charlottesville), v. 2, p. 3-3, 2002.

Galuske, R. A. W. ; Schmidt, K. E. ; Lomber, Stephen G. ; Payne, Bertram R. . The role of feedback in shaping neural representations in cat visual cortex. PNAS. Proceedings of the National Academy of Sciences of the United States of America, v. 99, p. 17083-17088, 2002.
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Schmidt, K. E. ; Galuske, R. A. W. ; Singer, Wolf . Matching the modules: Cortical maps and long range intrinsic connections in cat visual cortex during development. Journal of Neurobiology, v. 41, p. 10-17, 1999.
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Lowel, Siegrid ; Schmidt, Kerstin E. ; Kim, Dae-Shik ; Wolf, Fred ; Hoffsummer, Frank ; Singer, Wolf ; Bonhoeffer, Tobias . The layout of orientation and ocular dominance domains in area 17 of strabismic cats. European Journal of Neuroscience, v. 10, p. 2629-2643, 1998.
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Schmidt, Kerstin E. ; Goebel, Rainer ; Löwel, Siegrid ; Singer, Wolf . The Perceptual Grouping Criterion of Colinearity is Reflected by Anisotropies of Connections in the Primary Visual Cortex. European Journal of Neuroscience, v. 9, p. 1083-1089, 1997.
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Schmidt, K. E. ; Kim, Dae-Shik ; Singer, Wolf ; Bonhoeffer, Tobias ; Löwel, Siegrid . Functional specificity of long-range intrinsic and interhemispheric connections in the visual cortex of strabismic cats. The Journal of Neuroscience, v. 17, p. 5480-5492, 1997.
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Theses

Ocazionez, Sergio Andrés Conde. The influence of interhemispheric connections on spiking, assembly and LFP activities, and their phase relationship during figure-ground stimulation in primary visual cortex / Sergio Andrés Conde Ocazionez. Natal, 2014.
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