Svenja Gremmler (name at birth: Wulff)
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PhD in 2013
Research Project
Mechanisms of the saccadic system
The visual system is regarded to be the most important sensory system in humans since it provides far reaching three-dimensional information of high resolution of the environment. For an active exploration of the ambient scene, subjects make rapid eye movements called saccades which shift the direction of gaze from one target of interest to another. Saccades are so brief that no visual feedback can be given during the saccade. Therefore, the saccadic motor command has to be prepared in advance to accurately aim the fovea at a new target. Due to growth, injury or muscle weakness in consequence of aging, the mechanical properties of the oculomotor plant are subject to alterations which would lead to an erroneous saccade based on the primal motor command. For this reason the oculomotor system is undergoing a continuous self-calibration to adapt the new requirements. Experimentally, I investigate this process in humans and monkeys using the paradigm of saccadic adaptation. The main focus of my research is on the system's learning parameters and the employed reference frames.
PhD Committee
Prof. Dr. M Lappe (Supervisor)
Prof. Dr. N Sachser
Prof. Dr. P Fattori
Publications
Gremmler, S., Lappe, M. (2017). Saccadic suppression during voluntary and reactive saccades. Journal of Vision 17(8):8, 1-10
Meermeier, A., Gremmler, S., Richert, K., Eckermann, T., Lappe, M. (accepted). The reward of seeing: different types of visual reward and their ability to modify oculomotor learning. Journal of Vision.
Meermeier, A., Gremmler, S., Lappe, M. (accepted). New is always better - Novelty modulates oculomotor learning. Journal of Vision.
Lencer, R., Meermeier, A. Silling, K., Gremmler, S., Lappe, M. (2016). Instability of visual error processing for sensorimotor adaptation in schizophrenia. European Archives of Psychiatry and Clinical Neuroscience.
Gremmler, S., Lappe, M. (2016). Saccadic adaptation is associated with starting eye position. Frontiers in Human Neuroscience
Meermeier, A., Gremmler, S., Lappe, M. (2016) The influence of image content on oculomotor plasticity. Journal of Vision.
Gremmler S, Bosco A, Fattori P, Lappe M (2014) Saccadic adaptation shapes visual space in macaques. J Neurophysiol 111:1846–1851. doi:10.1152/jn.00709.2013.
Wulff S, Bosco A, Havermann K, Placenti G, Fattori P, Lappe M (2012) Eye position effects in saccadic adaptation in macaque monkeys. J Neurophysiol 108:2819–2826. doi:10.1152/jn.00212.2012.
Conference Contributions
Gremmler, S., Lappe, M., Saccadic Suppression during Voluntary vs Reactive Saccades, Poster presented at the Vision Science Society (VSS) Annual Meeting, St. Pete Beach, Florida, 2017
Gremmler, S., Lappe, M., Does Motor Learning Affect Visual Perception? The influence of saccadic adaptation on object localization, Oral presentation at the Meeting of the Italian Physiological Society (SIF), Catania, Italy, 2016
Gremmler, S., Lappe, M., Saccadic adaptation is associated with starting eye position, Poster presented at the European Conference of Eye Movements (ECEM), Vienna, 2015
Mohsen Sadeghi, Ondřej Havlíček, Rebecca Sier, Hans-Christian Ruiz, Svenja Gremmler, „A New Model for Saccadic Adaptation Based on Variable Learning Rates“, Short Oral Presentation, Translational and Computational Motor Control, Chicago, USA, 2015
Gremmler, S., Bosco, A., Fattoti, P. & Lappe, M., Shaping the world through looking: Saccadic adaptation affects localization in macaques.
Oral presentation at the Annual Meeting of the Society for Neuroscience, San Diego, USA, 2013
Gremmler, S. & Lappe, M., Saccadic Amplitude Shapes Adaptation Transfer Profile.Oral presentation at the European Conference of Eye Movements (ECEM), Lund, Sweden, 2013
Wulff, S. & Lappe, M., Saccadic Adaptation with an Adapted Visual Error.
Poster presented at the Vision Science Society (VSS) 12th Annual Meeting, Naples, Florida, 2012
Abstract
Wulff, S., Bosco, A., Fattori, P. & Lappe, M., The role of the saccadic motor vector in visual localization.
Poster presented at the Conference: Linking selection for visual perception, memory and action. Bielefeld, 2012
Wulff, S., Bosco, A, Havermann, K., Placenti, G., Fattori, P. & Lappe,M., Eye position effects in saccadic adaptation in monkeys. Poster presented at the European Conference on Eye Movements (ECEM), Marseille, France, 2011.
Wulff, S. Study of the effect of data compression on the position resolution of the ALICE TRD. Oral presentation at the DPG conference in Bochum 2009
Abstract
CV
| 2003-2009 | Studies in Physics, University of Münster |
| 2009 | Diploma thesis, Institute of Nuclear Physics, University of Münster, Title: Position Resolution and Zero Suppression of the ALICE TRD at LHC (Supervisor Prof. Dr. J. Wessels) |
| 2009 | Beginning of PhD research project, Institute of Psychology, University of Münster (Supervisor Prof. Dr. M. Lappe) |
| 2013 | PhD in Biology, University of Münster, Thesis: 'Reference frames and modification of target representation in oculomotor learning' |
| 2013 - today | Postdoc, Institute of Psychology, University of Münster |
| Since 9/2017 | Coordinator of the Otto Creutzfeldt Center, University of Münster |